GLSA-200510-11 : OpenSSL: SSL 2.0 protocol rollback

medium Nessus Plugin ID 20031

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-200510-11 (OpenSSL: SSL 2.0 protocol rollback)

Applications setting the SSL_OP_MSIE_SSLV2_RSA_PADDING option (or the SSL_OP_ALL option, that implies it) can be forced by a third-party to fallback to the less secure SSL 2.0 protocol, even if both parties support the more secure SSL 3.0 or TLS 1.0 protocols.
Impact :

A man-in-the-middle attacker can weaken the encryption used to communicate between two parties, potentially revealing sensitive information.
Workaround :

If possible, disable the use of SSL 2.0 in all OpenSSL-enabled applications.

Solution

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

See Also

https://www.openssl.org/news/secadv/20051011.txt

https://security.gentoo.org/glsa/200510-11

Plugin Details

Severity: Medium

ID: 20031

File Name: gentoo_GLSA-200510-11.nasl

Version: 1.20

Type: local

Published: 10/19/2005

Updated: 1/6/2021

Risk Information

VPR

Risk Factor: Low

Score: 3.4

CVSS v2

Risk Factor: Medium

Base Score: 5

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

Vulnerability Information

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

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

Patch Publication Date: 10/12/2005

Reference Information

CVE: CVE-2005-2969

GLSA: 200510-11