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Scientific Linux Security Update : openssl on SL5.x, SL6.x i386/x86_64 (20130304)
medium Nessus Plugin ID 65022
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Synopsis
The remote Scientific Linux host is missing one or more security updates.Description
It was discovered that OpenSSL 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-2013-0169)A NULL pointer dereference flaw was found in the OCSP response verification in OpenSSL. A malicious OCSP server could use this flaw to crash applications performing OCSP verification by sending a specially- crafted response. (CVE-2013-0166)
It was discovered that the TLS/SSL protocol could leak information about plain text when optional compression was used. An attacker able to control part of the plain text sent over an encrypted TLS/SSL connection could possibly use this flaw to recover other portions of the plain text. (CVE-2012-4929)
Note: This update disables zlib compression, which was previously enabled in OpenSSL by default. Applications using OpenSSL now need to explicitly enable zlib compression to use it.
It was found that OpenSSL read certain environment variables even when used by a privileged (setuid or setgid) application. A local attacker could use this flaw to escalate their privileges. No application shipped with Scientific Linux 5 and 6 was affected by this problem.
For the update to take effect, all services linked to the OpenSSL library must be restarted, or the system rebooted.
Solution
Update the affected packages.See Also
Plugin Details
Severity: Medium
ID: 65022
File Name: sl_20130304_openssl_on_SL5_x.nasl
Version: 1.12
Type: local
Agent: unix
Published: 3/5/2013
Updated: 12/5/2022
Supported Sensors: Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.9
CVSS v2
Risk Factor: Medium
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
Vulnerability Information
CPE: p-cpe:/a:fermilab:scientific_linux:openssl, p-cpe:/a:fermilab:scientific_linux:openssl-debuginfo, p-cpe:/a:fermilab:scientific_linux:openssl-devel, p-cpe:/a:fermilab:scientific_linux:openssl-perl, p-cpe:/a:fermilab:scientific_linux:openssl-static, 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: 3/4/2013
Vulnerability Publication Date: 9/15/2012