According to the versions of the libxml2 packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - There's a flaw in libxml2's xmllint in versions before 2.9.11. An attacker who is able to submit a crafted     file to be processed by xmllint could trigger a use-after-free. The greatest impact of this flaw is to     confidentiality, integrity, and availability. (CVE-2021-3516)

  - There is a flaw in the xml entity encoding functionality of libxml2 in versions before 2.9.11. An attacker     who is able to supply a crafted file to be processed by an application linked with the affected     functionality of libxml2 could trigger an out-of-bounds read. The most likely impact of this flaw is to     application availability, with some potential impact to confidentiality and integrity if an attacker is     able to use memory information to further exploit the application. (CVE-2021-3517)

  - There's a flaw in libxml2 in versions before 2.9.11. An attacker who is able to submit a crafted file to     be processed by an application linked with libxml2 could trigger a use-after-free. The greatest impact     from this flaw is to confidentiality, integrity, and availability. (CVE-2021-3518)

  - A vulnerability found in libxml2 in versions before 2.9.11 shows that it did not propagate errors while     parsing XML mixed content, causing a NULL dereference. If an untrusted XML document was parsed in recovery     mode and post-validated, the flaw could be used to crash the application. The highest threat from this     vulnerability is to system availability. (CVE-2021-3537)

  - A flaw was found in libxml2. Exponential entity expansion attack its possible bypassing all existing     protection mechanisms and leading to denial of service. (CVE-2021-3541)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2021:2569 advisory.

  - libxml2: Use-after-free in xmlEncodeEntitiesInternal() in entities.c (CVE-2021-3516)

  - libxml2: Heap-based buffer overflow in xmlEncodeEntitiesInternal() in entities.c (CVE-2021-3517)

  - libxml2: Use-after-free in xmlXIncludeDoProcess() in xinclude.c (CVE-2021-3518)

  - libxml2: NULL pointer dereference when post-validating mixed content parsed in recovery mode     (CVE-2021-3537)

  - libxml2: Exponential entity expansion attack bypasses all existing protection mechanisms (CVE-2021-3541)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of java-1.8.0-amazon-corretto installed on the remote host is prior to 1.8.0_312.b07-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2CORRETTO8-2024-012 advisory.

    There is a flaw in the xml entity encoding functionality of libxml2. An attacker who is able to supply a     crafted file to be processed by an application linked with the affected functionality of libxml2 could     trigger an out-of-bounds read. The most likely impact of this flaw is to application availability, with     some potential impact to confidentiality and integrity if an attacker is able to use memory information to     further exploit the application. (CVE-2021-3517)

    A flaw was found in gstreamer-plugins-base where an out-of-bounds read when handling certain ID3v2 tags is     possible. The highest threat from this vulnerability is to system availability. (CVE-2021-3522)

    Vulnerability in the Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component:
    JSSE). Supported versions that are affected are Java SE: 7u311, 8u301, 11.0.12; Oracle GraalVM Enterprise     Edition: 20.3.3 and 21.2.0. Difficult to exploit vulnerability allows unauthenticated attacker with     network access via TLS to compromise Java SE, Oracle GraalVM Enterprise Edition. Successful attacks of     this vulnerability can result in unauthorized access to critical data or complete access to all Java SE,     Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability applies to Java deployments,     typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load     and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for     security. This vulnerability can also be exploited by using APIs in the specified Component, e.g., through     a web service which supplies data to the APIs. CVSS 3.1 Base Score 5.9 (Confidentiality impacts). CVSS     Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N). (CVE-2021-35550)

    Vulnerability in the Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component:
    Swing). Supported versions that are affected are Java SE: 7u311, 8u301, 11.0.12, 17; Oracle GraalVM     Enterprise Edition: 20.3.3 and 21.2.0. Easily exploitable vulnerability allows unauthenticated attacker     with network access via multiple protocols to compromise Java SE, Oracle GraalVM Enterprise Edition.
    Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of     service (partial DOS) of Java SE, Oracle GraalVM Enterprise Edition. Note: This vulnerability applies to     Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java     applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java     sandbox for security. This vulnerability does not apply to Java deployments, typically in servers, that     load and run only trusted code (e.g., code installed by an administrator). CVSS 3.1 Base Score 5.3     (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L). (CVE-2021-35556)

    Vulnerability in the Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component:
    Swing). Supported versions that are affected are Java SE: 7u311, 8u301, 11.0.12, 17; Oracle GraalVM     Enterprise Edition: 20.3.3 and 21.2.0. Easily exploitable vulnerability allows unauthenticated attacker     with network access via multiple protocols to compromise Java SE, Oracle GraalVM Enterprise Edition.
    Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of     service (partial DOS) of Java SE, Oracle GraalVM Enterprise Edition. Note: This vulnerability applies to     Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java     applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java     sandbox for security. This vulnerability can also be exploited by using APIs in the specified Component,     e.g., through a web service which supplies data to the APIs. CVSS 3.1 Base Score 5.3 (Availability     impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L). (CVE-2021-35559)

    Vulnerability in the Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component:
    Utility). Supported versions that are affected are Java SE: 7u311, 8u301, 11.0.12, 17; Oracle GraalVM     Enterprise Edition: 20.3.3 and 21.2.0. Easily exploitable vulnerability allows unauthenticated attacker     with network access via multiple protocols to compromise Java SE, Oracle GraalVM Enterprise Edition.
    Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of     service (partial DOS) of Java SE, Oracle GraalVM Enterprise Edition. Note: This vulnerability applies to     Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java     applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java     sandbox for security. This vulnerability can also be exploited by using APIs in the specified Component,     e.g., through a web service which supplies data to the APIs. CVSS 3.1 Base Score 5.3 (Availability     impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L). (CVE-2021-35561)

    Vulnerability in the Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component:
    Keytool). Supported versions that are affected are Java SE: 7u311, 8u301, 11.0.12, 17; Oracle GraalVM     Enterprise Edition: 20.3.3 and 21.2.0. Easily exploitable vulnerability allows unauthenticated attacker     with network access via multiple protocols to compromise Java SE, Oracle GraalVM Enterprise Edition.
    Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to     some of Java SE, Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability applies to     Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java     applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java     sandbox for security. This vulnerability can also be exploited by using APIs in the specified Component,     e.g., through a web service which supplies data to the APIs. CVSS 3.1 Base Score 5.3 (Integrity impacts).
    CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N). (CVE-2021-35564)

    Vulnerability in the Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component:
    JSSE). Supported versions that are affected are Java SE: 7u311, 8u301, 11.0.12; Oracle GraalVM Enterprise     Edition: 20.3.3 and 21.2.0. Easily exploitable vulnerability allows unauthenticated attacker with network     access via TLS to compromise Java SE, Oracle GraalVM Enterprise Edition. Successful attacks of this     vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of     Java SE, Oracle GraalVM Enterprise Edition. Note: This vulnerability can only be exploited by supplying     data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted     Java applets, such as through a web service. CVSS 3.1 Base Score 5.3 (Availability impacts). CVSS Vector:
    (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L). (CVE-2021-35565)

    Vulnerability in the Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component:
    Libraries). Supported versions that are affected are Java SE: 8u301, 11.0.12, 17; Oracle GraalVM     Enterprise Edition: 20.3.3 and 21.2.0. Easily exploitable vulnerability allows low privileged attacker     with network access via Kerberos to compromise Java SE, Oracle GraalVM Enterprise Edition. Successful     attacks require human interaction from a person other than the attacker and while the vulnerability is in     Java SE, Oracle GraalVM Enterprise Edition, attacks may significantly impact additional products.
    Successful attacks of this vulnerability can result in unauthorized access to critical data or complete     access to all Java SE, Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability applies     to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java     applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java     sandbox for security. This vulnerability can also be exploited by using APIs in the specified Component,     e.g., through a web service which supplies data to the APIs. CVSS 3.1 Base Score 6.8 (Confidentiality     impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N). (CVE-2021-35567)

    Vulnerability in the Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component:
    JSSE). Supported versions that are affected are Java SE: 8u301, 11.0.12, 17; Oracle GraalVM Enterprise     Edition: 20.3.3 and 21.2.0. Easily exploitable vulnerability allows unauthenticated attacker with network     access via TLS to compromise Java SE, Oracle GraalVM Enterprise Edition. Successful attacks of this     vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of     Java SE, Oracle GraalVM Enterprise Edition. Note: This vulnerability can only be exploited by supplying     data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted     Java applets, such as through a web service. CVSS 3.1 Base Score 5.3 (Availability impacts). CVSS Vector:
    (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L). (CVE-2021-35578)

    Vulnerability in the Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component:
    ImageIO). Supported versions that are affected are Java SE: 7u311, 8u301, 11.0.12, 17; Oracle GraalVM     Enterprise Edition: 20.3.3 and 21.2.0. Easily exploitable vulnerability allows unauthenticated attacker     with network access via multiple protocols to compromise Java SE, Oracle GraalVM Enterprise Edition.
    Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of     service (partial DOS) of Java SE, Oracle GraalVM Enterprise Edition. Note: This vulnerability applies to     Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java     applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java     sandbox for security. This vulnerability can also be exploited by using APIs in the specified Component,     e.g., through a web service which supplies data to the APIs. CVSS 3.1 Base Score 5.3 (Availability     impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L). (CVE-2021-35586)

    Vulnerability in the Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component:
    Hotspot). Supported versions that are affected are Java SE: 7u311, 8u301; Oracle GraalVM Enterprise     Edition: 20.3.3 and 21.2.0. Difficult to exploit vulnerability allows unauthenticated attacker with     network access via multiple protocols to compromise Java SE, Oracle GraalVM Enterprise Edition. Successful     attacks require human interaction from a person other than the attacker. Successful attacks of this     vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of     Java SE, Oracle GraalVM Enterprise Edition. Note: This vulnerability applies to Java deployments,     typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load     and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for     security. This vulnerability can also be exploited by using APIs in the specified Component, e.g., through     a web service which supplies data to the APIs. CVSS 3.1 Base Score 3.1 (Availability impacts). CVSS     Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L). (CVE-2021-35588)

    Vulnerability in the Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component:
    JSSE). Supported versions that are affected are Java SE: 7u311, 8u301, 11.0.12, 17; Oracle GraalVM     Enterprise Edition: 20.3.3 and 21.2.0. Difficult to exploit vulnerability allows unauthenticated attacker     with network access via TLS to compromise Java SE, Oracle GraalVM Enterprise Edition. Successful attacks     of this vulnerability can result in unauthorized read access to a subset of Java SE, Oracle GraalVM     Enterprise Edition accessible data. Note: This vulnerability applies to Java deployments, typically in     clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run     untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. This     vulnerability can also be exploited by using APIs in the specified Component, e.g., through a web service     which supplies data to the APIs. CVSS 3.1 Base Score 3.7 (Confidentiality impacts). CVSS Vector:
    (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N). (CVE-2021-35603)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of libxml2 installed on the remote host is prior to 2.9.1-6.6.42. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2023-1743 advisory.

    parser.c in libxml2 before 2.9.5 mishandles parameter-entity references because the NEXTL macro calls the     xmlParserHandlePEReference function in the case of a '%' character in a DTD name. (CVE-2017-16931)

    GNOME project libxml2 v2.9.10 has a global buffer over-read vulnerability in xmlEncodeEntitiesInternal at     libxml2/entities.c. The issue has been fixed in commit 50f06b3e. (CVE-2020-24977)

    There's a flaw in libxml2's xmllint. An attacker who is able to submit a crafted file to be processed by     xmllint could trigger a use-after-free. The greatest impact of this flaw is to confidentiality, integrity,     and availability. (CVE-2021-3516)

    There is a flaw in the xml entity encoding functionality of libxml2. An attacker who is able to supply a     crafted file to be processed by an application linked with the affected functionality of libxml2 could     trigger an out-of-bounds read. The most likely impact of this flaw is to application availability, with     some potential impact to confidentiality and integrity if an attacker is able to use memory information to     further exploit the application. (CVE-2021-3517)

    There's a flaw in libxml2. An attacker who is able to submit a crafted file to be processed by an     application linked with libxml2 could trigger a use-after-free. The greatest impact from this flaw is to     confidentiality, integrity, and availability. (CVE-2021-3518)

    A NULL pointer dereference flaw was found in libxml2, where it did not propagate errors while parsing XML     mixed content. This flaw causes the application to crash if an untrusted XML document is parsed in     recovery mode and post validated. The highest threat from this vulnerability is to system availability.
    (CVE-2021-3537)

    A flaw was found in libxml2. Exponential entity expansion attack its possible bypassing all existing     protection mechanisms and leading to denial of service. (CVE-2021-3541)

    valid.c in libxml2 before 2.9.13 has a use-after-free of ID and IDREF attributes. (CVE-2022-23308)

    A flaw was found in the libxml2 library in functions used to manipulate the xmlBuf and the xmlBuffer     types. A substantial input causes values to calculate buffer sizes to overflow, resulting in an out-of-     bounds write. (CVE-2022-29824)

    An issue was discovered in libxml2 before 2.10.3. When parsing a multi-gigabyte XML document with the     XML_PARSE_HUGE parser option enabled, several integer counters can overflow. This results in an attempt to     access an array at a negative 2GB offset, typically leading to a segmentation fault. (CVE-2022-40303)

    An issue was discovered in libxml2 before 2.10.3. Certain invalid XML entity definitions can corrupt a     hash table key, potentially leading to subsequent logic errors. In one case, a double-free can be     provoked. (CVE-2022-40304)

    A NULL pointer dereference exists when parsing (invalid) XML schemas in libxml2     xmlSchemaCheckCOSSTDerivedOK (CVE-2023-28484)

    libxml2 Hashing of empty dict strings isn't deterministic. When hashing empty strings which aren't null-     terminated, xmlDictComputeFastKey could produce inconsistent results. This could lead to various logic or     memory errors, including double frees. (CVE-2023-29469)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4991-1 advisory.

    Yunho Kim discovered that libxml2 incorrectly handled certain error conditions. A remote attacker could     exploit this with a crafted XML file to cause a denial of service, or possibly cause libxml2 to expose     sensitive information. This issue only affected Ubuntu 14.04 ESM, and Ubuntu 16.04 ESM. (CVE-2017-8872)

    Zhipeng Xie discovered that libxml2 incorrectly handled certain XML schemas. A remote attacker could     possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 ESM, Ubuntu     16.04 ESM, and Ubuntu 18.04 LTS. (CVE-2019-20388)

    It was discovered that libxml2 incorrectly handled invalid UTF-8 input. A remote attacker could possibly     exploit this with a crafted XML file to cause libxml2 to crash, resulting in a denial of service. This     issue only affected Ubuntu 14.04 ESM, Ubuntu 16.04 ESM, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu     20.10. (CVE-2020-24977)

    It was discovered that libxml2 incorrectly handled invalid UTF-8 input. A remote attacker could possibly     exploit this with a crafted XML file to cause libxml2 to crash, resulting in a denial of service.
    (CVE-2021-3517)

    It was discovered that libxml2 did not properly handle certain crafted XML files. A local attacker could     exploit this with a crafted input to cause libxml2 to crash, resulting in a denial of service, or possibly     execute arbitrary code. (CVE-2021-3516, CVE-2021-3518)

    It was discovered that libxml2 incorrectly handled error states. A remote attacker could exploit this with     a crafted XML file to cause libxml2 to crash, resulting in a denial of service. (CVE-2021-3537)

    Sebastian Pipping discovered that libxml2 did not properly handle certain crafted XML files. A remote     attacker could exploit this with a crafted XML file to cause libxml2 to crash, resulting in a denial of     service. This issue only affected Ubuntu 20.04 LTS, Ubuntu 20.10, and Ubuntu 21.04. (CVE-2021-3541)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	名前	製品	ファミリー	公開日	更新日	深刻度
157940	EulerOS Virtualization 3.0.6.0 : libxml2 (EulerOS-SA-2022-1082)	Nessus	Huawei Local Security Checks	2022/2/12	2023/11/9	high
151363	CentOS 8 : libxml2 (CESA-2021:2569)	Nessus	CentOS Local Security Checks	2021/7/3	2023/12/11	high
198255	Amazon Linux 2 : java-1.8.0-amazon-corretto (ALASCORRETTO8-2024-012)	Nessus	Amazon Linux Local Security Checks	2024/5/31	2024/12/11	high
175091	Amazon Linux AMI : libxml2 (ALAS-2023-1743)	Nessus	Amazon Linux Local Security Checks	2023/5/4	2024/12/11	critical
150858	Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS : libxml2 vulnerabilities (USN-4991-1)	Nessus	Ubuntu Local Security Checks	2021/6/17	2025/9/3	critical

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