Scientific Linux Security Update : nss and nspr on SL5.x i386/x86_64 (20130805)

medium Nessus Plugin ID 69223

Synopsis

The remote Scientific Linux host is missing one or more security updates.

Description

It was discovered that NSS leaked timing information when decrypting TLS/SSL and DTLS protocol encrypted records when CBC-mode cipher suites were used. A remote attacker could possibly use this flaw to retrieve plain text from the encrypted packets by using a TLS/SSL or DTLS server as a padding oracle. (CVE-2013-1620)

An out-of-bounds memory read flaw was found in the way NSS decoded certain certificates. If an application using NSS decoded a malformed certificate, it could cause the application to crash. (CVE-2013-0791)

This update also fixes the following bugs :

- A defect in the FreeBL library implementation of the Diffie-Hellman (DH) protocol previously caused Openswan to drop connections.

- A memory leak in the nssutil_ReadSecmodDB() function has been fixed.

In addition, the nss package has been upgraded to upstream version 3.14.3, and the nspr package has been upgraded to upstream version 4.9.5. These updates provide a number of bug fixes and enhancements over the previous versions.

Note that while upstream NSS version 3.14 prevents the use of certificates that have an MD5 signature, this erratum includes a patch that allows such certificates by default. To prevent the use of certificates that have an MD5 signature, set the 'NSS_HASH_ALG_SUPPORT' environment variable to '-MD5'.

After installing this update, applications using NSS or NSPR must be restarted for this update to take effect.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?726b44ed

Plugin Details

Severity: Medium

ID: 69223

File Name: sl_20130805_nss_and_nspr_on_SL5_x.nasl

Version: 1.5

Type: local

Agent: unix

Published: 8/6/2013

Updated: 1/14/2021

Supported Sensors: Nessus Agent

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:N/A:P

Vulnerability Information

CPE: p-cpe:/a:fermilab:scientific_linux:nspr, p-cpe:/a:fermilab:scientific_linux:nspr-debuginfo, p-cpe:/a:fermilab:scientific_linux:nspr-devel, p-cpe:/a:fermilab:scientific_linux:nss, p-cpe:/a:fermilab:scientific_linux:nss-debuginfo, p-cpe:/a:fermilab:scientific_linux:nss-devel, p-cpe:/a:fermilab:scientific_linux:nss-pkcs11-devel, p-cpe:/a:fermilab:scientific_linux:nss-tools, x-cpe:/o:fermilab:scientific_linux

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RedHat/release, Host/RedHat/rpm-list

Patch Publication Date: 8/5/2013

Vulnerability Publication Date: 2/8/2013

Reference Information

CVE: CVE-2013-0791, CVE-2013-1620