CentOS 3 / 4 : openssl (CESA-2010:0163)
medium Nessus Plugin ID 45346
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VPR Score: 8.5
Synopsis
The remote CentOS host is missing one or more security updates.Description
Updated openssl packages that fix several security issues are now available for Red Hat Enterprise Linux 3 and 4.The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.
OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols, as well as a full-strength, general purpose cryptography library.
A flaw was found in the way the TLS/SSL (Transport Layer Security/Secure Sockets Layer) protocols handled session renegotiation. A man-in-the-middle attacker could use this flaw to prefix arbitrary plain text to a client's session (for example, an HTTPS connection to a website). This could force the server to process an attacker's request as if authenticated using the victim's credentials. This update addresses this flaw by implementing the TLS Renegotiation Indication Extension, as defined in RFC 5746.
(CVE-2009-3555)
Refer to the following Knowledgebase article for additional details about the CVE-2009-3555 flaw:
http://kbase.redhat.com/faq/docs/DOC-20491
Dan Kaminsky found that browsers could accept certificates with MD2 hash signatures, even though MD2 is no longer considered a cryptographically strong algorithm. This could make it easier for an attacker to create a malicious certificate that would be treated as trusted by a browser. OpenSSL now disables the use of the MD2 algorithm inside signatures by default. (CVE-2009-2409)
An input validation flaw was found in the handling of the BMPString and UniversalString ASN1 string types in OpenSSL's ASN1_STRING_print_ex() function. An attacker could use this flaw to create a specially crafted X.509 certificate that could cause applications using the affected function to crash when printing certificate contents. (CVE-2009-0590)
Note: The affected function is rarely used. No application shipped with Red Hat Enterprise Linux calls this function, for example.
All OpenSSL users should upgrade to these updated packages, which contain backported patches to resolve these issues. For the update to take effect, all services linked to the OpenSSL library must be restarted, or the system rebooted.
Solution
Update the affected openssl packages.See Also
http://www.nessus.org/u?8293c0a3
http://www.nessus.org/u?88adda1d
Plugin Details
Severity: Medium
ID: 45346
File Name: centos_RHSA-2010-0163.nasl
Version: 1.20
Type: local
Agent: unix
Family: CentOS Local Security Checks
Published: 3/26/2010
Updated: 1/4/2021
Dependencies: 12634
Risk Information
Risk Factor: Medium
VPR Score: 8.5
CVSS v2.0
Base Score: 5.8
Temporal Score: 4.5
Vector: AV:N/AC:M/Au:N/C:N/I:P/A:P
Temporal Vector: E:POC/RL:OF/RC:C
Vulnerability Information
CPE: p-cpe:/a:centos:centos:openssl, p-cpe:/a:centos:centos:openssl-devel, p-cpe:/a:centos:centos:openssl-perl, cpe:/o:centos:centos:3, cpe:/o:centos:centos:4
Required KB Items: Host/local_checks_enabled, Host/CentOS/release, Host/CentOS/rpm-list
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 3/25/2010
Vulnerability Publication Date: 3/27/2009
Reference Information
BID: 34256