AIX OpenSSL Advisory : openssl_advisory8.doc
Medium Nessus Plugin ID 74468
SynopsisThe remote AIX host has a vulnerable version of OpenSSL.
DescriptionThe version of OpenSSL installed on the remote host is potentially affected by a remote code execution or denial of service vulnerability.
A race condition exists in the ssl3_read_bytes function in s3_pkt.c in OpenSSL versions through 1.0.1g, when SSL_MODE_RELEASE_BUFFERS is enabled. This could allow remote attackers to inject data across sessions or cause a denial of service (use-after-free and parsing error) via an SSL connection in a multi-threaded environment.
SolutionA fix is available, and can be downloaded from the AIX website.
To extract the fixes from the tar file :
zcat openssl-18.104.22.1683.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