Detections
Analytics
GLSA-200406-21 : mit-krb5: Multiple buffer overflows in krb5_aname_to_localname
critical Nessus Plugin ID 14532
Synopsis
The remote Gentoo host is missing one or more security-related patches.Description
The remote host is affected by the vulnerability described in GLSA-200406-21 (mit-krb5: Multiple buffer overflows in krb5_aname_to_localname)The library function krb5_aname_to_localname() contains multiple buffer overflows. This is only exploitable if explicit mapping or rules-based mapping is enabled. These are not enabled as default.
With explicit mapping enabled, an attacker must authenticate using a principal name listed in the explicit mapping list.
With rules-based mapping enabled, an attacker must first be able to create arbitrary principal names either in the local realm Kerberos realm or in a remote realm from which the local realm's service are reachable by cross-realm authentication.
Impact :
An attacker could use these vulnerabilities to execute arbitrary code with the permissions of the user running mit-krb5, which could be the root user.
Workaround :
There is no known workaround at this time. All users are encouraged to upgrade to the latest available version.
Solution
mit-krb5 users should upgrade to the latest version:# emerge sync # emerge -pv '>=app-crypt/mit-krb5-1.3.3-r1' # emerge '>=app-crypt/mit-krb5-1.3.3-r1'
See Also
Plugin Details
Severity: Critical
ID: 14532
File Name: gentoo_GLSA-200406-21.nasl
Version: 1.18
Type: local
Family: Gentoo Local Security Checks
Published: 8/30/2004
Updated: 1/6/2021
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.9
CVSS v2
Risk Factor: Critical
Base Score: 10
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
Vulnerability Information
CPE: p-cpe:/a:gentoo:linux:mit-krb5, cpe:/o:gentoo:linux
Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list
Patch Publication Date: 6/29/2004
Vulnerability Publication Date: 6/1/2004
Reference Information
CVE: CVE-2004-0523
GLSA: 200406-21