遠端 Oracle Linux 8 主機中安裝的套件受到 ELSA-2024-0046 公告中提及的多個弱點影響。

  - Squid 是一種用於 Web 的快取代理伺服器，支援 HTTP、HTTPS、FTP 等。由於未正確檢查函式傳回值錯誤，Squid 的協助程式流程管理程序容易遭受拒絕服務攻擊。此錯誤已在 Squid 6.5 版中修正。建議所有使用者進行升級。目前沒有任何因應措施可解決此弱點。(CVE-2023-49286)

  - Squid 是一種用於 Web 的快取代理伺服器，支援 HTTP、HTTPS、FTP 等。由於 NULL 指標解除參照錯誤，Squid 的 Gopher 閘道容易遭受拒絕服務攻擊。在 Squid 6.0.1 之前的 Squid 中，gopher 通訊協定一律可用且已啟用。觸發此錯誤的回應可從任何 gopher 伺服器接收，即使是無惡意意圖的伺服器。已在 Squid 版 6.0.1 中移除 Gopher 支援。建議所有使用者進行升級。無法升級的使用者應拒絕所有 gopher URL 要求。(CVE-2023-46728)

  - Squid 是一種用於 Web 的快取代理伺服器，支援 HTTP、HTTPS、FTP 等。由於緩衝區過度讀取錯誤，Squid 的 HTTP 訊息處理程序容易遭受拒絕服務攻擊。此錯誤已在 Squid 6.5 版中修正。建議所有使用者進行升級。目前沒有任何因應措施可解決此弱點。
    (CVE-2023-49285)

  - Squid 是一種用於 Web 的快取代理伺服器。由於指定索引驗證不當錯誤，使用「--with-openssl」編譯的 Squid 3.3.0.1 至 5.9 及 6.0 至 6.4 在進行 SSL 憑證驗證時容易遭受拒絕服務攻擊。此問題允許遠端伺服器透過在伺服器憑證鏈中使用特製 SSL 憑證起始 TLS 交握，對 Squid 代理伺服器造成拒絕服務。此攻擊僅限於 HTTPS 和 SSL-Bump。此錯誤已在 Squid 版本 6.4 中修正。此外，可在 Squid 的修補程式封存中找到可解決此問題的修補程式的穩定版本。使用預先封裝 Squid 版本的使用者應諮詢套件供應商，以取得更新套件的可用性資訊。(CVE-2023-46724)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

遠端 AlmaLinux 9 主機已安裝一個受到 ALSA-2024:0071 公告中提及的多個弱點影響的套件。

  - Squid 是一種用於 Web 的快取代理伺服器。由於指定索引驗證不當錯誤，使用「--with-openssl」編譯的 Squid 3.3.0.1 至 5.9 及 6.0 至 6.4 在進行 SSL 憑證驗證時容易遭受拒絕服務攻擊。此問題允許遠端伺服器透過在伺服器憑證鏈中使用特製 SSL 憑證起始 TLS 交握，對 Squid 代理伺服器造成拒絕服務。此攻擊僅限於 HTTPS 和 SSL-Bump。此錯誤已在 Squid 版本 6.4 中修正。此外，可在 Squid 的修補程式封存中找到可解決此問題的修補程式的穩定版本。使用預先封裝 Squid 版本的使用者應諮詢套件供應商，以取得更新套件的可用性資訊。(CVE-2023-46724)

  - Squid 是一種用於 Web 的快取代理伺服器，支援 HTTP、HTTPS、FTP 等。由於 NULL 指標解除參照錯誤，Squid 的 Gopher 閘道容易遭受拒絕服務攻擊。在 Squid 6.0.1 之前的 Squid 中，gopher 通訊協定一律可用且已啟用。觸發此錯誤的回應可從任何 gopher 伺服器接收，即使是無惡意意圖的伺服器。已在 Squid 版 6.0.1 中移除 Gopher 支援。建議所有使用者進行升級。無法升級的使用者應拒絕所有 gopher URL 要求。(CVE-2023-46728)

  - Squid 是一種用於 Web 的快取代理伺服器，支援 HTTP、HTTPS、FTP 等。由於緩衝區過度讀取錯誤，Squid 的 HTTP 訊息處理程序容易遭受拒絕服務攻擊。此錯誤已在 Squid 6.5 版中修復。建議所有使用者進行升級。目前沒有任何因應措施可解決此弱點。
    (CVE-2023-49285)

  - Squid 是一種用於 Web 的快取代理伺服器，支援 HTTP、HTTPS、FTP 等。由於未正確檢查函式傳回值錯誤，Squid 的協助程式流程管理程序容易遭受拒絕服務攻擊。此錯誤已在 Squid 6.5 版中修正。建議所有使用者進行升級。目前沒有任何因應措施可解決此弱點。(CVE-2023-49286)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

遠端 Redhat Enterprise Linux 8 主機上安裝的套件受到 RHSA-2024:0771 公告中提及的多個弱點影響。

    Squid 是適用於 Web 用戶端的高效能 proxy 快取伺服器，支援 FTP 和 HTTP 資料物件。

    安全性修正：

    * squid：HTTP 和 HTTPS 的 DoS (CVE-2023-5824)

    * squid：SSL 憑證驗證中的拒絕服務弱點 (CVE-2023-46724)

    * squid：gopher 通訊協定程式碼中的 NULL 指標解除參照弱點 (CVE-2023-46728)

    * squid：HTTP 訊息處理功能中的緩衝區過度讀取弱點 (CVE-2023-49285)

    * squid：協助程式處理程序管理中的函式傳回值檢查不正確弱點 (CVE-2023-49286)

    * squid：HTTP 要求剖析中的拒絕服務弱點 (CVE-2023-50269)

    錯誤修正：

    * 當存在父項對等時，squid 在宣告中損毀 (RHEL-18255)

    如需安全性問題的詳細資料，包括影響、CVSS 分數、致謝及其他相關資訊，請參閱〈參照〉一節列出的 CVE 頁面。

Tenable 已直接從 Red Hat Enterprise Linux 安全公告擷取前置描述區塊。

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2024:0020 advisory.

    Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

    CVE-2023-46724:
    Squid is a caching proxy for the Web. Due to an Improper Validation of Specified Index bug, Squid versions     3.3.0.1 through 5.9 and 6.0 prior to 6.4 compiled using `--with-openssl` are vulnerable to a Denial of     Service attack against SSL Certificate validation. This problem allows a remote server to perform Denial     of Service against Squid Proxy by initiating a TLS Handshake with a specially crafted SSL Certificate in a     server certificate chain. This attack is limited to HTTPS and SSL-Bump. This bug is fixed in Squid version     6.4. In addition, patches addressing this problem for the stable releases can be found in Squid's patch     archives. Those who you use a prepackaged version of Squid should refer to the package vendor for     availability information on updated packages.

    CVE-2023-46728:
    Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to a NULL pointer     dereference bug Squid is vulnerable to a Denial of Service attack against Squid's Gopher gateway. The     gopher protocol is always available and enabled in Squid prior to Squid 6.0.1. Responses triggering this     bug are possible to be received from any gopher server, even those without malicious intent. Gopher     support has been removed in Squid version 6.0.1. Users are advised to upgrade. Users unable to upgrade     should reject all gopher URL requests.

    CVE-2023-49285:
    Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to a Buffer Overread bug     Squid is vulnerable to a Denial of Service attack against Squid HTTP Message processing. This bug is fixed     by Squid version 6.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.

    CVE-2023-49286:
    Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to an Incorrect Check of     Function Return Value bug Squid is vulnerable to a Denial of Service attack against its Helper process     management. This bug is fixed by Squid version 6.5. Users are advised to upgrade. There are no known     workarounds for this vulnerability.

    CVE-2023-5824:
    Squid is vulnerable to Denial of Service attack against HTTP and HTTPS clients due to an Improper Handling     of Structural Elements bug.

Tenable has extracted the preceding description block directly from the Alibaba Cloud Linux 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 Fedora 39 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2023-ab77331a34 advisory.

    - New version 6.6
    - Important security fixes
    - Removed gopher support

Tenable has extracted the preceding description block directly from the Fedora 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 Redhat Enterprise Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2024:0071 advisory.

    Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data     objects.

    Security Fix(es):

    * squid: Denial of Service in SSL Certificate validation (CVE-2023-46724)

    * squid: NULL pointer dereference in the gopher protocol code (CVE-2023-46728)

    * squid: Buffer over-read in the HTTP Message processing feature (CVE-2023-49285)

    * squid: Incorrect Check of Function Return Value In Helper Process management (CVE-2023-49286)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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 Oracle Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2024-0071 advisory.

    - squid: Denial of Service in SSL Certificate validation (CVE-2023-46724)
    - squid: NULL pointer dereference in the gopher protocol code (CVE-2023-46728)
    - squid: Buffer over-read in the HTTP Message processing feature (CVE-2023-49285)

Tenable has extracted the preceding description block directly from the Oracle Linux 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 Debian 11 / 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5637 advisory.

    -----BEGIN PGP SIGNED MESSAGE-----     Hash: SHA512

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-5637-1                   security@debian.org     https://www.debian.org/security/                          Markus Koschany     March 08, 2024                        https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : squid     CVE ID         : CVE-2023-46724 CVE-2023-46846 CVE-2023-46847 CVE-2023-49285                      CVE-2023-49286 CVE-2023-50269 CVE-2024-23638 CVE-2024-25617                      CVE-2023-46848 CVE-2024-25111     Debian Bug     : 1055252 1054537 1055250 1055251 1058721

    Several security vulnerabilities have been discovered in Squid, a full featured     web proxy cache. Due to programming errors in Squid's HTTP request parsing,     remote attackers may be able to execute a denial of service attack by sending     large X-Forwarded-For header or trigger a stack buffer overflow while     performing HTTP Digest authentication. Other issues facilitate request     smuggling past a firewall or a denial of service against Squid's Helper process     management.

    In regard to CVE-2023-46728: Please note that support for the Gopher protocol     has simply been removed in future Squid versions. There are no plans by the     upstream developers of Squid to fix this issue. We recommend to reject all     Gopher URL requests instead.

    For the oldstable distribution (bullseye), these problems have been fixed     in version 4.13-10+deb11u3.

    For the stable distribution (bookworm), these problems have been fixed in     version 5.7-2+deb12u1.

    We recommend that you upgrade your squid packages.

    For the detailed security status of squid please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/squid

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org
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Tenable has extracted the preceding description block directly from the Debian security advisory.

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

According to the versions of the squid package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - Squid is a caching proxy for the Web. Due to an Improper Validation of Specified Index bug, Squid versions     3.3.0.1 through 5.9 and 6.0 prior to 6.4 compiled using `--with-openssl` are vulnerable to a Denial of     Service attack against SSL Certificate validation. This problem allows a remote server to perform Denial     of Service against Squid Proxy by initiating a TLS Handshake with a specially crafted SSL Certificate in a     server certificate chain. This attack is limited to HTTPS and SSL-Bump. This bug is fixed in Squid version     6.4. In addition, patches addressing this problem for the stable releases can be found in Squid's patch     archives. Those who you use a prepackaged version of Squid should refer to the package vendor for     availability information on updated packages. (CVE-2023-46724)

  - Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to a NULL pointer     dereference bug Squid is vulnerable to a Denial of Service attack against Squid's Gopher gateway. The     gopher protocol is always available and enabled in Squid prior to Squid 6.0.1. Responses triggering this     bug are possible to be received from any gopher server, even those without malicious intent. Gopher     support has been removed in Squid version 6.0.1. Users are advised to upgrade. Users unable to upgrade     should reject all gopher URL requests. (CVE-2023-46728)

  - Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to a Buffer Overread bug     Squid is vulnerable to a Denial of Service attack against Squid HTTP Message processing. This bug is fixed     by Squid version 6.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.
    (CVE-2023-49285)

  - Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to an Incorrect Check of     Function Return Value bug Squid is vulnerable to a Denial of Service attack against its Helper process     management. This bug is fixed by Squid version 6.5. Users are advised to upgrade. There are no known     workarounds for this vulnerability. (CVE-2023-49286)

  - Squid is a caching proxy for the Web. Due to an Uncontrolled Recursion bug in versions 2.6 through     2.7.STABLE9, versions 3.1 through 5.9, and versions 6.0.1 through 6.5, Squid may be vulnerable to a Denial     of Service attack against HTTP Request parsing. This problem allows a remote client to perform Denial of     Service attack by sending a large X-Forwarded-For header when the follow_x_forwarded_for feature is     configured. This bug is fixed by Squid version 6.6. In addition, patches addressing this problem for the     stable releases can be found in Squid's patch archives. (CVE-2023-50269)

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 Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:1787 advisory.

    Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data     objects.

    Security Fix(es):

    * squid: denial of service in HTTP header parser (CVE-2024-25617)

    * squid: denial of service in HTTP request parsing (CVE-2023-50269)

    * squid: Buffer over-read in the HTTP Message processing feature (CVE-2023-49285)

    * squid: Incorrect Check of Function Return Value In Helper Process management (CVE-2023-49286)

    * squid: NULL pointer dereference in the gopher protocol code (CVE-2023-46728)

    * squid: Denial of Service in SSL Certificate validation (CVE-2023-46724)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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 Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:0773 advisory.

    Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects.

    Security Fix(es):

    * squid: DoS against HTTP and HTTPS (CVE-2023-5824)

    * squid: Denial of Service in SSL Certificate validation (CVE-2023-46724)

    * squid: NULL pointer dereference in the gopher protocol code (CVE-2023-46728)

    * squid: Buffer over-read in the HTTP Message processing feature (CVE-2023-49285)

    * squid: Incorrect Check of Function Return Value In Helper Process management (CVE-2023-49286)

    * squid: denial of service in HTTP request parsing (CVE-2023-50269)

    Bug Fix(es):

    * squid crashes in assertion when a parent peer exists (RHEL-18254)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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
187640	Oracle Linux 8：squid：4 (ELSA-2024-0046)	Nessus	Oracle Linux Local Security Checks	2024/1/4	2025/9/9	high
187681	AlmaLinux 9squid (ALSA-2024:0071)	Nessus	Alma Linux Local Security Checks	2024/1/8	2024/1/8	high
190404	RHEL 8 : squid:4 (RHSA-2024:0771)	Nessus	Red Hat Local Security Checks	2024/2/12	2025/8/27	critical
236724	Alibaba Cloud Linux 3 : 0020: squid:4 (ALINUX3-SA-2024:0020)	Nessus	Alibaba Cloud Linux Local Security Checks	2025/5/14	2025/5/14	high
187385	Fedora 39 : squid (2023-ab77331a34)	Nessus	Fedora Local Security Checks	2023/12/28	2024/11/14	high
187674	RHEL 9 : squid (RHSA-2024:0071)	Nessus	Red Hat Local Security Checks	2024/1/8	2024/11/7	high
187863	Oracle Linux 9 : squid (ELSA-2024-0071)	Nessus	Oracle Linux Local Security Checks	2024/1/10	2025/9/9	high
191759	Debian dsa-5637 : squid - security update	Nessus	Debian Local Security Checks	2024/3/8	2025/1/24	medium
191868	EulerOS 2.0 SP8 : squid (EulerOS-SA-2024-1301)	Nessus	Huawei Local Security Checks	2024/3/12	2024/3/12	high
193230	RHEL 7 : squid (RHSA-2024:1787)	Nessus	Red Hat Local Security Checks	2024/4/11	2025/1/10	high
190403	RHEL 8 : squid:4 (RHSA-2024:0773)	Nessus	Red Hat Local Security Checks	2024/2/12	2025/8/27	critical

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