GLSA-200710-01 : RPCSEC_GSS library: Buffer overflow

critical Nessus Plugin ID 26941

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-200710-01 (RPCSEC_GSS library: Buffer overflow)

A stack based buffer overflow has been discovered in the svcauth_gss_validate() function in file lib/rpc/svc_auth_gss.c when processing an overly long string in a RPC message.
Impact :

A remote attacker could send a specially crafted RPC request to an application relying on this library, e.g NFSv4 or Kerberos (GLSA-200709-01), resulting in the execution of arbitrary code with the privileges of the user running the application.
Workaround :

There is no known workaround at this time.

Solution

All librpcsecgss users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=net-libs/librpcsecgss-0.16'

See Also

https://security.gentoo.org/glsa/200709-01

https://security.gentoo.org/glsa/200710-01

https://www.tenable.com/security/research/tra-2007-07

Plugin Details

Severity: Critical

ID: 26941

File Name: gentoo_GLSA-200710-01.nasl

Version: 1.24

Type: local

Published: 10/9/2007

Updated: 1/6/2021

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C

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

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:librpcsecgss, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Ease: No known exploits are available

Patch Publication Date: 10/4/2007

Reference Information

CVE: CVE-2007-3999

GLSA: 200710-01

TRA: TRA-2007-07

CWE: 20, 119