The version of the Network Authentication Service (NAS) installed on the remote AIX host is affected by the following vulnerabilities related to Kerberos 5 :

  - Denial of service and remote code execution     vulnerabilities exist due to security context handles     not being properly maintained, allowing an     authenticated, remote attacker to crash the service or     execute arbitrary code using crafted GSSAPI traffic.
    (CVE-2014-5352)

  - A denial of service vulnerability exists due to improper     handling of zero-byte or unterminated strings.
    (CVE-2014-5355)

  - Denial of service and remote code execution     vulnerabilities exist which allow an authenticated,     remote attacker to crash the service or execute     arbitrary code using crafted, malformed XDR data.
    (CVE-2014-9421)

  - A privilege escalation vulnerability exists that allows     an authenticated, remote attacker to gain administrative     access via a flaw in kadmin authorization checks.
    (CVE-2014-9422)

  - An information disclosure vulnerability allows an     attacker to gain information about process heap memory     from NAS packets. (CVE-2014-9423)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - The krb5_gss_process_context_token function in lib/gssapi/krb5/process_context_token.c in the     libgssapi_krb5 library in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through 1.12.2, and 1.13.x     before 1.13.1 does not properly maintain security-context handles, which allows remote authenticated users     to cause a denial of service (use-after-free and double free, and daemon crash) or possibly execute     arbitrary code via crafted GSSAPI traffic, as demonstrated by traffic to kadmind. (CVE-2014-5352)

Note that Nessus relies on the presence of the package as reported by the vendor.

Updated krb5 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Kerberos is a networked authentication system which allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos KDC.

The following security issues are fixed with this release :

A use-after-free flaw was found in the way the MIT Kerberos libgssapi_krb5 library processed valid context deletion tokens. An attacker able to make an application using the GSS-API library (libgssapi) could call the gss_process_context_token() function and use this flaw to crash that application. (CVE-2014-5352)

If kadmind were used with an LDAP back end for the KDC database, a remote, authenticated attacker who has the permissions to set the password policy could crash kadmind by attempting to use a named ticket policy object as a password policy for a principal.
(CVE-2014-5353)

It was found that the krb5_read_message() function of MIT Kerberos did not correctly sanitize input, and could create invalid krb5_data objects. A remote, unauthenticated attacker could use this flaw to crash a Kerberos child process via a specially crafted request.
(CVE-2014-5355)

A double-free flaw was found in the way MIT Kerberos handled invalid External Data Representation (XDR) data. An authenticated user could use this flaw to crash the MIT Kerberos administration server (kadmind), or other applications using Kerberos libraries, via specially crafted XDR packets. (CVE-2014-9421)

It was found that the MIT Kerberos administration server (kadmind) incorrectly accepted certain authentication requests for two-component server principal names. A remote attacker able to acquire a key with a particularly named principal (such as 'kad/x') could use this flaw to impersonate any user to kadmind, and perform administrative actions as that user. (CVE-2014-9422)

Red Hat would like to thank the MIT Kerberos project for reporting CVE-2014-5352, CVE-2014-9421, and CVE-2014-9422. The MIT Kerberos project acknowledges Nico Williams for assisting with the analysis of CVE-2014-5352.

All krb5 users are advised to upgrade to these updated packages, which contain backported patches to correct these issues.

MIT kerberos krb5 was updated to fix several security issues and bugs.

Security issues fixed: CVE-2014-5351: The kadm5_randkey_principal_3 function in lib/kadm5/srv/svr_principal.c in kadmind in MIT Kerberos 5 (aka krb5) sent old keys in a response to a -randkey -keepold request, which allowed remote authenticated users to forge tickets by leveraging administrative access.

  - CVE-2014-5352: In the MIT krb5 libgssapi_krb5 library,     after gss_process_context_token() is used to process a     valid context deletion token, the caller was left with a     security context handle containing a dangling pointer.
    Further uses of this handle would have resulted in     use-after-free and double-free memory access violations.
    libgssrpc server applications such as kadmind were     vulnerable as they can be instructed to call     gss_process_context_token().

  - CVE-2014-9421: If the MIT krb5 kadmind daemon receives     invalid XDR data from an authenticated user, it may have     performed use-after-free and double-free memory access     violations while cleaning up the partial deserialization     results. Other libgssrpc server applications might also     been vulnerable if they contain insufficiently defensive     XDR functions.

  - CVE-2014-9422: The MIT krb5 kadmind daemon incorrectly     accepted authentications to two-component server     principals whose first component is a left substring of     'kadmin' or whose realm is a left prefix of the default     realm.

  - CVE-2014-9423: libgssrpc applications including kadmind     output four or eight bytes of uninitialized memory to     the network as part of an unused 'handle' field in     replies to clients.

Bugs fixed :

  - Work around replay cache creation race; (bnc#898439).

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

The Rocky Linux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ ciqsa-2026_1422 advisory.

    This advisory aggregates security fixes for the krb5 SRPM in CIQ LTS 9.6. It addresses 80 CVEs:
    CVE-2009-0845, CVE-2008-0947, CVE-2016-3120, CVE-2024-3596, CVE-2012-1014, and 75 more.

Tenable has extracted the preceding description block directly from the CIQ 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 Rocky Linux 8.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ ciqsa-2026_0067 advisory.

    This advisory aggregates security fixes for the krb5 SRPM in CIQ LTS 8.6. It addresses 72 CVEs:
    CVE-2008-0947, CVE-2016-3120, CVE-2012-1014, CVE-2017-15088, CVE-2014-9422, and 67 more.

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

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

krb5 has been updated to fix four security issues :

  - gss_process_context_token() incorrectly frees context     (bsc#912002). (CVE-2014-5352)

  - kadmind doubly frees partial deserialization results     (bsc#912002). (CVE-2014-9421)

  - kadmind incorrectly validates server principal name     (bsc#912002). (CVE-2014-9422)

  - libgssrpc server applications leak uninitialized bytes     (bsc#912002) Additionally, these non-security issues     have been fixed :. (CVE-2014-9423)

  - Winbind process hangs indefinitely without DC.
    (bsc#872912)

  - Hanging winbind processes. (bsc#906557)

Updated krb5 packages that fix multiple security issues, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Kerberos is a networked authentication system which allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos KDC.

A NULL pointer dereference flaw was found in the MIT Kerberos SPNEGO acceptor for continuation tokens. A remote, unauthenticated attacker could use this flaw to crash a GSSAPI-enabled server application.
(CVE-2014-4344)

A buffer overflow was found in the KADM5 administration server (kadmind) when it was used with an LDAP back end for the KDC database.
A remote, authenticated attacker could potentially use this flaw to execute arbitrary code on the system running kadmind. (CVE-2014-4345)

A use-after-free flaw was found in the way the MIT Kerberos libgssapi_krb5 library processed valid context deletion tokens. An attacker able to make an application using the GSS-API library (libgssapi) call the gss_process_context_token() function could use this flaw to crash that application. (CVE-2014-5352)

If kadmind were used with an LDAP back end for the KDC database, a remote, authenticated attacker with the permissions to set the password policy could crash kadmind by attempting to use a named ticket policy object as a password policy for a principal.
(CVE-2014-5353)

A double-free flaw was found in the way MIT Kerberos handled invalid External Data Representation (XDR) data. An authenticated user could use this flaw to crash the MIT Kerberos administration server (kadmind), or other applications using Kerberos libraries, using specially crafted XDR packets. (CVE-2014-9421)

It was found that the MIT Kerberos administration server (kadmind) incorrectly accepted certain authentication requests for two-component server principal names. A remote attacker able to acquire a key with a particularly named principal (such as 'kad/x') could use this flaw to impersonate any user to kadmind, and perform administrative actions as that user. (CVE-2014-9422)

An information disclosure flaw was found in the way MIT Kerberos RPCSEC_GSS implementation (libgssrpc) handled certain requests. An attacker could send a specially crafted request to an application using libgssrpc to disclose a limited portion of uninitialized memory used by that application. (CVE-2014-9423)

Two buffer over-read flaws were found in the way MIT Kerberos handled certain requests. A remote, unauthenticated attacker able to inject packets into a client or server application's GSSAPI session could use either of these flaws to crash the application. (CVE-2014-4341, CVE-2014-4342)

A double-free flaw was found in the MIT Kerberos SPNEGO initiators. An attacker able to spoof packets to appear as though they are from an GSSAPI acceptor could use this flaw to crash a client application that uses MIT Kerberos. (CVE-2014-4343)

Red Hat would like to thank the MIT Kerberos project for reporting the CVE-2014-5352, CVE-2014-9421, CVE-2014-9422, and CVE-2014-9423 issues.
MIT Kerberos project acknowledges Nico Williams for helping with the analysis of CVE-2014-5352.

The krb5 packages have been upgraded to upstream version 1.12, which provides a number of bug fixes and enhancements, including :

* Added plug-in interfaces for principal-to-username mapping and verifying authorization to user accounts.

* When communicating with a KDC over a connected TCP or HTTPS socket, the client gives the KDC more time to reply before it transmits the request to another server. (BZ#1049709, BZ#1127995)

This update also fixes multiple bugs, for example :

* The Kerberos client library did not recognize certain exit statuses that the resolver libraries could return when looking up the addresses of servers configured in the /etc/krb5.conf file or locating Kerberos servers using DNS service location. The library could treat non-fatal return codes as fatal errors. Now, the library interprets the specific return codes correctly. (BZ#1084068, BZ#1109102)

In addition, this update adds various enhancements. Among others :

* Added support for contacting KDCs and kpasswd servers through HTTPS proxies implementing the Kerberos KDC Proxy (KKDCP) protocol.
(BZ#1109919)

A buffer overflow was found in the KADM5 administration server (kadmind) when it was used with an LDAP back end for the KDC database.
A remote, authenticated attacker could potentially use this flaw to execute arbitrary code on the system running kadmind. (CVE-2014-4345)

A use-after-free flaw was found in the way the MIT Kerberos libgssapi_krb5 library processed valid context deletion tokens. An attacker able to make an application using the GSS-API library (libgssapi) call the gss_process_context_token() function could use this flaw to crash that application. (CVE-2014-5352)

If kadmind were used with an LDAP back end for the KDC database, a remote, authenticated attacker with the permissions to set the password policy could crash kadmind by attempting to use a named ticket policy object as a password policy for a principal.
(CVE-2014-5353)

A double-free flaw was found in the way MIT Kerberos handled invalid External Data Representation (XDR) data. An authenticated user could use this flaw to crash the MIT Kerberos administration server (kadmind), or other applications using Kerberos libraries, using specially crafted XDR packets. (CVE-2014-9421)

It was found that the MIT Kerberos administration server (kadmind) incorrectly accepted certain authentication requests for two-component server principal names. A remote attacker able to acquire a key with a particularly named principal (such as 'kad/x') could use this flaw to impersonate any user to kadmind, and perform administrative actions as that user. (CVE-2014-9422)

An information disclosure flaw was found in the way MIT Kerberos RPCSEC_GSS implementation (libgssrpc) handled certain requests. An attacker could send a specially crafted request to an application using libgssrpc to disclose a limited portion of uninitialized memory used by that application. (CVE-2014-9423)

Two buffer over-read flaws were found in the way MIT Kerberos handled certain requests. A remote, unauthenticated attacker able to inject packets into a client or server application's GSSAPI session could use either of these flaws to crash the application. (CVE-2014-4341, CVE-2014-4342)

A double-free flaw was found in the MIT Kerberos SPNEGO initiators. An attacker able to spoof packets to appear as though they are from an GSSAPI acceptor could use this flaw to crash a client application that uses MIT Kerberos. (CVE-2014-4343)

The krb5 packages have been upgraded to upstream version 1.12, which provides a number of bug fixes and enhancements, including :

  - Added plug-in interfaces for principal-to-username     mapping and verifying authorization to user accounts.

  - When communicating with a KDC over a connected TCP or     HTTPS socket, the client gives the KDC more time to     reply before it transmits the request to another server.

This update also fixes multiple bugs, for example :

  - The Kerberos client library did not recognize certain     exit statuses that the resolver libraries could return     when looking up the addresses of servers configured in     the /etc/krb5.conf file or locating Kerberos servers     using DNS service location. The library could treat     non-fatal return codes as fatal errors. Now, the library     interprets the specific return codes correctly.

In addition, this update adds various enhancements. Among others :

  - Added support for contacting KDCs and kpasswd servers     through HTTPS proxies implementing the Kerberos KDC     Proxy (KKDCP) protocol.

The remote OracleVM system is missing necessary patches to address critical security updates :

  - fix for CVE-2014-5355 (#1193939) 'krb5: unauthenticated     denial of service in recvauth_common and others'

  - fix for CVE-2014-5353 (#1174543) 'Fix LDAP misused     policy name crash'

  - Changelog fixes to make errata subsystem happy.

  - fix for CVE-2014-5352 (#1179856)     'gss_process_context_token incorrectly frees context     (MITKRB5-SA-2015-001)'

  - fix for CVE-2014-9421 (#1179857) 'kadmind doubly frees     partial deserialization results (MITKRB5-SA-2015-001)'

  - fix for CVE-2014-9422 (#1179861) 'kadmind incorrectly     validates server principal name (MITKRB5-SA-2015-001)'

ID	名前	製品	ファミリー	公開日	更新日	深刻度
83874	AIX NAS Advisory : nas_advisory3.asc	Nessus	AIX Local Security Checks	2015/5/28	2023/4/21	high
218088	Linux Distros Unpatched Vulnerability : CVE-2014-5352	Nessus	Misc.	2025/3/4	2026/8/4	critical
82667	CentOS 6 : krb5 (CESA-2015:0794)	Nessus	CentOS Local Security Checks	2015/4/10	2021/1/4	high
83683	SUSE SLED12 / SLES12 Security Update : krb5 (SUSE-SU-2015:0290-2)	Nessus	SuSE Local Security Checks	2015/5/20	2021/1/6	high
354310	Rocky Linux 9.6 [CIQ] Security Update: krb5-devel / krb5-libs / krb5-pkinit / krb5-server / etc Multiple Vulnerabilities (ciqsa-2026_1422)	Nessus	Rocky Linux Local Security Checks	2026/10/1	2026/10/13	critical
358952	Rocky Linux 8.6 [CIQ] Security Update: krb5-devel / krb5-devel-debuginfo / krb5-libs / krb5-libs-debuginfo / etc Multiple Vulnerabilities (ciqsa-2026_0067)	Nessus	Rocky Linux Local Security Checks	2026/10/1	2026/10/12	critical
81312	SuSE 11.3 Security Update : krb5 (SAT Patch Number 10282)	Nessus	SuSE Local Security Checks	2015/2/12	2021/1/6	high
81896	CentOS 7 : krb5 (CESA-2015:0439)	Nessus	CentOS Local Security Checks	2015/3/18	2021/1/4	high
82255	Scientific Linux Security Update : krb5 on SL7.x x86_64 (20150305)	Nessus	Scientific Linux Local Security Checks	2015/3/26	2021/1/14	high
82692	OracleVM 3.3 : krb5 (OVMSA-2015-0054)	Nessus	OracleVM Local Security Checks	2015/4/10	2021/1/4	high

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