GLSA-200612-11 : AMD64 x86 emulation base libraries: OpenSSL multiple vulnerabilities

critical Nessus Plugin ID 23863
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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-200612-11 (AMD64 x86 emulation base libraries: OpenSSL multiple vulnerabilities)

Tavis Ormandy and Will Drewry, both of the Google Security Team, discovered that the SSL_get_shared_ciphers() function contains a buffer overflow vulnerability, and that the SSLv2 client code contains a flaw leading to a crash. Additionally, Dr. Stephen N. Henson found that the ASN.1 handler contains two Denial of Service vulnerabilities: while parsing an invalid ASN.1 structure and while handling certain types of public key.
Impact :

An attacker could trigger the buffer overflow by sending a malicious suite of ciphers to an application using the vulnerable function, and thus execute arbitrary code with the rights of the user running the application. An attacker could also consume CPU and/or memory by exploiting the Denial of Service vulnerabilities. Finally, a malicious server could crash a SSLv2 client through the SSLv2 vulnerability.
Workaround :

There is no known workaround at this time.

Solution

All AMD64 x86 emulation base libraries users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=app-emulation/emul-linux-x86-baselibs-2.5.5'

See Also

https://security.gentoo.org/glsa/200612-11

Plugin Details

Severity: Critical

ID: 23863

File Name: gentoo_GLSA-200612-11.nasl

Version: 1.17

Type: local

Published: 12/14/2006

Updated: 1/6/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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

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

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:emul-linux-x86-baselibs, cpe:/o:gentoo:linux

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/11/2006

Vulnerability Publication Date: 9/28/2006

Reference Information

CVE: CVE-2006-2937, CVE-2006-2940, CVE-2006-3738, CVE-2006-4343

BID: 20246, 20247, 20248, 20249

GLSA: 200612-11

CWE: 119, 399