AIX OpenSSL Advisory : openssl_advisory5.asc
Medium Nessus Plugin ID 73563
SynopsisThe remote AIX host is running a vulnerable version of OpenSSL.
DescriptionThe version of OpenSSL running on the remote host is affected by the following vulnerabilities :
- The TLS protocol 1.1 and 1.2 and the DTLS protocol 1.0 and 1.2, as used in OpenSSL, OpenJDK, PolarSSL, and other products, do not properly consider timing side- channel attacks on a MAC check requirement during the processing of malformed CBC padding, which allows remote attackers to conduct distinguishing attacks and plaintext-recovery attacks via statistical analysis of timing data for crafted packets, aka the 'Lucky Thirteen' issue. (CVE-2013-0169)
- OpenSSL before 0.9.8y, 1.0.0 before 1.0.0k, and 1.0.1 before 1.0.1d does not properly perform signature verification for OCSP responses, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an invalid key.
SolutionA fix is available, and it can be downloaded from the AIX website.
To extract the fixes from the tar file :
zcat openssl-0.9.8.2500.tar.Z | tar xvf - or zcat openssl-fips-126.96.36.1990.tar.Z | tar xvf -
IMPORTANT : If possible, it is recommended that a mksysb backup of the system be created. Verify it is both bootable and readable before proceeding.
To preview the fix installation :
installp -apYd . openssl
To install the fix package :
installp -aXYd . openssl