FreeBSD : krb5 -- unkeyed PAC checksum handling vulnerability (9f971cea-03f5-11e0-bf50-001a926c7637)

Medium Nessus Plugin ID 51104

Synopsis

The remote FreeBSD host is missing a security-related update.

Description

The MIT Kerberos team reports :

MIT krb5 incorrectly accepts an unkeyed checksum for PAC signatures.

An authenticated remote attacker can forge PACs if using a KDC that does not filter client-provided PAC data. This can result in privilege escalation against a service that relies on PAC contents to make authorization decisions.

Solution

Update the affected package.

See Also

http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-007.txt

http://www.nessus.org/u?86f32866

Plugin Details

Severity: Medium

ID: 51104

File Name: freebsd_pkg_9f971cea03f511e0bf50001a926c7637.nasl

Version: 1.15

Type: local

Published: 2010/12/10

Updated: 2018/11/10

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 4.3

Temporal Score: 3.2

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 3.7

Temporal Score: 3.2

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:krb5, cpe:/o:freebsd:freebsd

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2010/12/09

Vulnerability Publication Date: 2010/11/30

Reference Information

CVE: CVE-2010-1324

BID: 45116