GLSA-201404-07 : OpenSSL: Information Disclosure

High Nessus Plugin ID 73407

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-201404-07 (OpenSSL: Information Disclosure)

Multiple vulnerabilities have been found in OpenSSL:
OpenSSL incorrectly handles memory in the TLS heartbeat extension, leading to information disclosure of 64kb per request, possibly including private keys (“Heartbleed bug”, OpenSSL 1.0.1 only, CVE-2014-0160).
The Montgomery ladder implementation of OpenSSL improperly handles swap operations (CVE-2014-0076).
Impact :

A remote attacker could exploit these issues to disclose information, including private keys or other sensitive information, or perform side-channel attacks to obtain ECDSA nonces.
Workaround :

Disabling the tls-heartbeat USE flag (enabled by default) provides a workaround for the CVE-2014-0160 issue.

Solution

All OpenSSL users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=dev-libs/openssl-1.0.1g' Note: All services using OpenSSL to provide TLS connections have to be restarted for the update to take effect. Utilities like app-admin/lib_users can aid in identifying programs using OpenSSL.
As private keys may have been compromised using the Heartbleed attack, it is recommended to regenerate them.

See Also

http://heartbleed.com/

http://www.gentoo.org/security/en/glsa/glsa-201404-07.xml

Plugin Details

Severity: High

ID: 73407

File Name: gentoo_GLSA-201404-07.nasl

Version: 1.12

Type: local

Published: 2014/04/08

Updated: 2018/07/12

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 9.4

Temporal Score: 7.8

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

Temporal Vector: CVSS2#E:F/RL:OF/RC:C

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2014/04/08

Exploitable With

Core Impact

Metasploit (OpenSSL Heartbeat (Heartbleed) Information Leak)

Reference Information

CVE: CVE-2014-0076, CVE-2014-0160

BID: 66363

GLSA: 201404-07