Buffer overflow in HAProxy - CVE-2015-3281
Published: July 6, 2015 / Updated: July 28, 2020
Vulnerability identifier: #VU32413
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2015-3281
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
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.
Affected software
HAProxy
haproxy (Alpine package)
haproxy
Fedora
haproxy (Alpine package)
haproxy
Fedora
How to mitigate CVE-2015-3281
Install update from vendor's website.
HAProxy - update to 1.5.14
haproxy (Alpine package) - update to 1.5.14-r0
haproxy - addressed in versions 1.5.14-1.fc21, 1.5.14-1.fc22
haproxy (Alpine package) - update to 1.5.14-r0
haproxy - addressed in versions 1.5.14-1.fc21, 1.5.14-1.fc22
External References
- http://git.haproxy.org/?p=haproxy-1.5.git;a=commit;h=7ec765568883b2d4e5a2796adbeb492a22ec9bd4
- http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00001.html
- http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00023.html
- http://rhn.redhat.com/errata/RHSA-2015-1741.html
- http://rhn.redhat.com/errata/RHSA-2015-2666.html
- http://www.debian.org/security/2015/dsa-3301
- http://www.haproxy.org/news.html
- http://www.securityfocus.com/bid/75554
- http://www.ubuntu.com/usn/USN-2668-1