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GLSA-200902-02 : OpenSSL: Certificate validation error

medium Nessus Plugin ID 35673

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-200902-02 (OpenSSL: Certificate validation error)

 The Google Security Team reported that several functions incorrectly check the result after calling the EVP_VerifyFinal() function, allowing a malformed signature to be treated as a good signature rather than as an error. This issue affects the signature checks on DSA and ECDSA keys used with SSL/TLS.
 Impact :

 A remote attacker could exploit this vulnerability and spoof arbitrary names to conduct Man-In-The-Middle attacks and intercept sensitive information.
 Workaround :

 There is no known workaround at this time.

Solution

All OpenSSL users should upgrade to the latest version:
 # emerge --sync # emerge --ask --oneshot --verbose '>=dev-libs/openssl-0.9.8j'

See Also

https://security.gentoo.org/glsa/200902-02

Plugin Details

Severity: Medium

ID: 35673

File Name: gentoo_GLSA-200902-02.nasl

Version: 1.17

Type: local

Published: 2/13/2009

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.0

CVSS v2

Risk Factor: Medium

Base Score: 5.8

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

Vulnerability Information

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

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

Patch Publication Date: 2/12/2009

Reference Information

CVE: CVE-2008-5077

CWE: 20

GLSA: 200902-02