GLSA-201404-07 : OpenSSL: Information Disclosure
high Nessus Plugin ID 73407
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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-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
Plugin Details
Severity: High
ID: 73407
File Name: gentoo_GLSA-201404-07.nasl
Version: 1.14
Type: local
Family: Gentoo Local Security Checks
Published: 4/8/2014
Updated: 1/6/2021
Dependencies: ssh_get_info.nasl
Risk Information
VPR
Risk Factor: High
Score: 7.5
CVSS v2
Risk Factor: High
Base Score: 9.4
Temporal Score: 7.8
Vector: AV:N/AC:L/Au:N/C:C/I:C/A:N
Temporal Vector: 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: 4/8/2014
Exploitable With
Core Impact
Metasploit (OpenSSL Heartbeat (Heartbleed) Information Leak)
Reference Information
CVE: CVE-2014-0076, CVE-2014-0160
BID: 66363
GLSA: 201404-07