The buffer_slow_realign function in HAProxy 1.5.x before 1.5.14 and 1.6-dev does not properly realign a buffer that is used for pending outgoing data, which allows remote attackers to obtain sensitive information (uninitialized memory contents of previous requests) via a crafted request.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://rhn.redhat.com/errata/RHSA-2015-1741.html | third party advisory vendor advisory |
| http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00023.html | vendor advisory mailing list third party advisory |
| http://www.haproxy.org/news.html | patch vendor advisory |
| http://rhn.redhat.com/errata/RHSA-2015-2666.html | third party advisory vendor advisory |
| http://www.ubuntu.com/usn/USN-2668-1 | third party advisory vendor advisory |
| http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00001.html | vendor advisory mailing list third party advisory |
| http://git.haproxy.org/?p=haproxy-1.5.git%3Ba=commit%3Bh=7ec765568883b2d4e5a2796adbeb492a22ec9bd4 | |
| http://www.debian.org/security/2015/dsa-3301 | third party advisory vendor advisory |
| http://www.securityfocus.com/bid/75554 | third party advisory vdb entry |