CVE-2013-2175 Denial of service in n/a
Remote attackers can crash HAProxy via crafted HTTP headers when specific header functions are configured with negative occurrence counts.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2013-2175?
CVE-2013-2175 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 19 Aug 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
HAProxy 1.4 before 1.4.24 and 1.5 before 1.5-dev19, when configured to use hdr_ip or other "hdr_*" functions with a negative occurrence count, allows remote attackers to cause a denial of service (negative array index usage and crash) via an HTTP header with a certain number of values, related to the MAX_HDR_HISTORY variable.
Which versions are affected by CVE-2013-2175?
It affects 4 products.
Linux distribution packages (4)
haproxy Red Hat:enterprise_linux:6::server | All versions | 0:1.4.22-5.el6_4 |
haproxy-debuginfo Red Hat:enterprise_linux:6::server | All versions | 0:1.4.22-5.el6_4 |
haproxy Red Hat:openshift:1.2::el6 | All versions | 0:1.4.22-6.el6op |
haproxy-debuginfo Red Hat:openshift:1.2::el6 | All versions | 0:1.4.22-6.el6op |
Products include Canonical Ubuntu Linux, Debian Debian Linux, Haproxy Haproxy, Redhat Enterprise Linux Load Balancer.
How do I fix CVE-2013-2175?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2013-2175 being exploited?
There is no known exploitation of CVE-2013-2175 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2013-2175, GHSA-4wh9-9j6m-2gcq, RHSA-2013:1120, RHSA-2013:1204.