The (1) ftpd and (2) ksu programs in (a) MIT Kerberos 5 (krb5) up to 1.5, and 1.4.x before 1.4.4, and (b) Heimdal 0.7.2 and earlier, do not check return codes for setuid calls, which might allow local users to gain privileges by causing setuid to fail to drop privileges. NOTE: as of 20060808, it is not known whether an exploitable attack scenario exists for these issues.

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.

The Rocky Linux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ ciqsa-2026_0439 advisory.

    This advisory aggregates security fixes for the krb5 SRPM in CIQ LTS 9.2. It addresses 74 CVEs:
    CVE-2008-0947, CVE-2016-3120, CVE-2012-1014, CVE-2017-15088, CVE-2014-9422, and 69 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 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 remote NewStart CGSL host, running version MAIN 6.06 (SP), has krb5 packages installed that are affected by multiple vulnerabilities:

  - plugins/preauth/pkinit/pkinit_crypto_openssl.c in MIT Kerberos 5 (aka krb5) through 1.15.2 mishandles     Distinguished Name (DN) fields, which allows remote attackers to execute arbitrary code or cause a denial     of service (buffer overflow and application crash) in situations involving untrusted X.509 data, related     to the get_matching_data and X509_NAME_oneline_ex functions. NOTE: this has security relevance only in use     cases outside of the MIT Kerberos distribution, e.g., the use of get_matching_data in KDC certauth plugin     code that is specific to Red Hat. (CVE-2017-15088)

  - The process_chpw_request function in schpw.c in the password-changing functionality in kadmind in MIT     Kerberos 5 (aka krb5) 1.7 through 1.9 frees an invalid pointer, which allows remote attackers to execute     arbitrary code or cause a denial of service (daemon crash) via a crafted request that triggers an error     condition. (CVE-2011-0285)

  - schpw.c in the kpasswd service in kadmind in MIT Kerberos 5 (aka krb5) before 1.11.3 does not properly     validate UDP packets before sending responses, which allows remote attackers to cause a denial of service     (CPU and bandwidth consumption) via a forged packet that triggers a communication loop, as demonstrated by     krb_pingpong.nasl, a related issue to CVE-1999-0103. (CVE-2002-2443)

  - The (1) ftpd and (2) ksu programs in (a) MIT Kerberos 5 (krb5) up to 1.5, and 1.4.x before 1.4.4, and (b)     Heimdal 0.7.2 and earlier, do not check return codes for setuid calls, which might allow local users to     gain privileges by causing setuid to fail to drop privileges. NOTE: as of 20060808, it is not known     whether an exploitable attack scenario exists for these issues. (CVE-2006-3084)

  - The RPC library in Kerberos 5 1.4 through 1.4.4, and 1.5 through 1.5.1, as used in Kerberos administration     daemon (kadmind) and other products that use this library, calls an uninitialized function pointer in     freed memory, which allows remote attackers to cause a denial of service (crash) and possibly execute     arbitrary code via unspecified vectors. (CVE-2006-6143)

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

The remote NewStart CGSL host, running version MAIN 6.06, has krb5 packages installed that are affected by multiple vulnerabilities:

  - plugins/preauth/pkinit/pkinit_crypto_openssl.c in MIT Kerberos 5 (aka krb5) through 1.15.2 mishandles     Distinguished Name (DN) fields, which allows remote attackers to execute arbitrary code or cause a denial     of service (buffer overflow and application crash) in situations involving untrusted X.509 data, related     to the get_matching_data and X509_NAME_oneline_ex functions. NOTE: this has security relevance only in use     cases outside of the MIT Kerberos distribution, e.g., the use of get_matching_data in KDC certauth plugin     code that is specific to Red Hat. (CVE-2017-15088)

  - The process_chpw_request function in schpw.c in the password-changing functionality in kadmind in MIT     Kerberos 5 (aka krb5) 1.7 through 1.9 frees an invalid pointer, which allows remote attackers to execute     arbitrary code or cause a denial of service (daemon crash) via a crafted request that triggers an error     condition. (CVE-2011-0285)

  - schpw.c in the kpasswd service in kadmind in MIT Kerberos 5 (aka krb5) before 1.11.3 does not properly     validate UDP packets before sending responses, which allows remote attackers to cause a denial of service     (CPU and bandwidth consumption) via a forged packet that triggers a communication loop, as demonstrated by     krb_pingpong.nasl, a related issue to CVE-1999-0103. (CVE-2002-2443)

  - The (1) ftpd and (2) ksu programs in (a) MIT Kerberos 5 (krb5) up to 1.5, and 1.4.x before 1.4.4, and (b)     Heimdal 0.7.2 and earlier, do not check return codes for setuid calls, which might allow local users to     gain privileges by causing setuid to fail to drop privileges. NOTE: as of 20060808, it is not known     whether an exploitable attack scenario exists for these issues. (CVE-2006-3084)

  - The RPC library in Kerberos 5 1.4 through 1.4.4, and 1.5 through 1.5.1, as used in Kerberos administration     daemon (kadmind) and other products that use this library, calls an uninitialized function pointer in     freed memory, which allows remote attackers to cause a denial of service (crash) and possibly execute     arbitrary code via unspecified vectors. (CVE-2006-6143)

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

Various return checks of setuid() and seteuid() calls have been fixed in kerberos client and server applications.

If these applications are setuid, it might have been possible for local attackers to gain root access. (CVE-2006-3083)

We are not affected by the seteuid() problems, tracked by CVE-2006-3084.

Michael Calmer and Marcus Meissner discovered that several krb5 tools did not check the return values from setuid() system calls. On systems that have configured user process limits, it may be possible for an attacker to cause setuid() to fail via resource starvation. In that situation, the tools will not reduce their privilege levels, and will continue operation as the root user.

By default, Ubuntu does not ship with user process limits.

Please note that these packages are not officially supported by Ubuntu (they are in the 'universe' component of the archive).

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

Various flaws have been reported that allow an attacker to execute arbitrary code with user privileges by tricking the user into opening a malicious email containing JavaScript. Please note that JavaScript is disabled by default for emails, and it is not recommended to enable it. (CVE-2006-3113, CVE-2006-3802, CVE-2006-3803, CVE-2006-3805, CVE-2006-3806, CVE-2006-3807, CVE-2006-3809, CVE-2006-3810, CVE-2006-3811, CVE-2006-3812)

A buffer overflow has been discovered in the handling of .vcard files.
By tricking a user into importing a malicious vcard into his contacts, this could be exploited to execute arbitrary code with the user's privileges. (CVE-2006-3084)

The 'enigmail' plugin has been updated to work with the new Thunderbird version.

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

Various return checks of setuid() and seteuid() calls have been fixed in kerberos client and server applications.

If these applications are setuid, it might have been possible for local attackers to gain root access (CVE-2006-3083).

We are not affected by the seteuid() problems, tracked by CVE-2006-3084.

This update incorporates a fix for a recently-announced bug found in the kadmind daemon.

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

A flaw was discovered in some bundled Kerberos-aware packages that would fail to check the results of the setuid() call. This call can fail in some circumstances on the Linux 2.6 kernel if certain user limits are reached, which could be abused by a local attacker to get the applications to continue to run as root, possibly leading to an elevation of privilege.

Updated packages have been patched to correct this issue.

In certain application programs packaged in the MIT Kerberos 5 source distribution, calls to setuid() and seteuid() are not always checked for success and may fail with some PAM configurations. A local user could exploit one of these vulnerabilities to result in privilege escalation. No exploit code is known to exist at this time.

The remote host is affected by the vulnerability described in GLSA-200608-21 (Heimdal: Multiple local privilege escalation vulnerabilities)

    The ftpd and rcp applications provided by Heimdal fail to check the     return value of calls to seteuid().
  Impact :

    A local attacker could exploit this vulnerability to execute arbitrary     code with elevated privileges.
  Workaround :

    There is no known workaround at this time.

The remote host is affected by the vulnerability described in GLSA-200608-15 (MIT Kerberos 5: Multiple local privilege escalation vulnerabilities)

    Unchecked calls to setuid() in krshd and v4rcp, as well as unchecked     calls to seteuid() in kftpd and in ksu, have been found in the MIT     Kerberos 5 program suite and may lead to a local root privilege     escalation.
  Impact :

    A local attacker could exploit this vulnerability to execute arbitrary     code with elevated privileges.
  Workaround :

    There is no known workaround at this time.

ID	Name	Product	Family	Type	Severity
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	Local	critical
355341	Rocky Linux 9.2 [CIQ] Security Update: krb5-devel / krb5-libs / krb5-libs-debuginfo / krb5-pkinit / etc Multiple Vulnerabilities (ciqsa-2026_0439)	Nessus	Rocky Linux Local Security Checks	Local	critical
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	Local	critical
301200	NewStart CGSL MAIN 6.06 (SP) : krb5 Multiple Vulnerabilities (NS-SA-2026-0007)	Nessus	NewStart CGSL Local Security Checks	Local	critical
266225	NewStart CGSL MAIN 6.06 : krb5 Multiple Vulnerabilities (NS-SA-2025-0215)	Nessus	NewStart CGSL Local Security Checks	Local	critical
29496	SuSE 10 Security Update : krb5-apps-servers and krb5-apps-clients (ZYPP Patch Number 1938)	Nessus	SuSE Local Security Checks	Local	high
27913	Ubuntu 5.04 / 5.10 / 6.06 LTS : krb5 vulnerabilities (USN-334-1)	Nessus	Ubuntu Local Security Checks	Local	high
27908	Ubuntu 6.06 LTS : mozilla-thunderbird vulnerabilities (USN-329-1)	Nessus	Ubuntu Local Security Checks	Local	critical
27312	openSUSE 10 Security Update : krb5-apps-clients (krb5-apps-clients-1937)	Nessus	SuSE Local Security Checks	Local	high
24190	Fedora Core 5 : krb5-1.4.3-5.3 (2007-034)	Nessus	Fedora Local Security Checks	Local	high
23888	Mandrake Linux Security Advisory : krb5 (MDKSA-2006:139)	Nessus	Mandriva Local Security Checks	Local	high
22688	Debian DSA-1146-1 : krb5 - programming error	Nessus	Debian Local Security Checks	Local	high
22283	GLSA-200608-21 : Heimdal: Multiple local privilege escalation vulnerabilities	Nessus	Gentoo Local Security Checks	Local	high
22214	GLSA-200608-15 : MIT Kerberos 5: Multiple local privilege escalation vulnerabilities	Nessus	Gentoo Local Security Checks	Local	high

Detections

Analytics

CVE-2006-3084

high

Tenable Plugins

critical

critical

critical

critical

critical

high

high

critical

high

high

high

high

high

high