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FreeBSD : openssl -- potential SSL 2.0 rollback (60e26a40-3b25-11da-9484-00123ffe8333)

medium Nessus Plugin ID 21435

Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

Vulnerability :

Such applications are affected if they use the option SSL_OP_MSIE_SSLV2_RSA_PADDING. This option is implied by use of SSL_OP_ALL, which is intended to work around various bugs in third-party software that might prevent interoperability. The SSL_OP_MSIE_SSLV2_RSA_PADDING option disables a verification step in the SSL 2.0 server supposed to prevent active protocol-version rollback attacks. With this verification step disabled, an attacker acting as a 'man in the middle' can force a client and a server to negotiate the SSL 2.0 protocol even if these parties both support SSL 3.0 or TLS 1.0. The SSL 2.0 protocol is known to have severe cryptographic weaknesses and is supported as a fallback only.

Applications using neither SSL_OP_MSIE_SSLV2_RSA_PADDING nor SSL_OP_ALL are not affected. Also, applications that disable use of SSL 2.0 are not affected.

Solution

Update the affected packages.

See Also

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

http://www.nessus.org/u?f90d5fdf

Plugin Details

Severity: Medium

ID: 21435

File Name: freebsd_pkg_60e26a403b2511da948400123ffe8333.nasl

Version: 1.17

Type: local

Published: 5/13/2006

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.4

CVSS v2

Risk Factor: Medium

Base Score: 5

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:openssl-beta, p-cpe:/a:freebsd:freebsd:compat5x-amd64, p-cpe:/a:freebsd:freebsd:openssl-overwrite-base, p-cpe:/a:freebsd:freebsd:compat5x-alpha, p-cpe:/a:freebsd:freebsd:compat5x-i386, p-cpe:/a:freebsd:freebsd:openssl-beta-overwrite-base, cpe:/o:freebsd:freebsd, p-cpe:/a:freebsd:freebsd:compat5x-sparc64, p-cpe:/a:freebsd:freebsd:openssl

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Patch Publication Date: 10/12/2005

Vulnerability Publication Date: 10/11/2005

Reference Information

CVE: CVE-2005-2969

FreeBSD: SA-05:21.openssl