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Fencer Intel
medium 5.1

CVE-2013-1912 json

Buffer overflow in HAProxy 1.4 through 1.4.22 and 1.5-dev through 1.5-dev17, when HTTP keep-alive is enabled, using HTTP keywords in TCP in…

published 13y ago modified 4mo ago also EUVD-2013-1906

cvss
5.1
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.6%
EPSS 5.6% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

Buffer overflow in HAProxy 1.4 through 1.4.22 and 1.5-dev through 1.5-dev17, when HTTP keep-alive is enabled, using HTTP keywords in TCP inspection rules, and running with rewrite rules that appends to requests, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via crafted pipelined HTTP requests that prevent request realignment from occurring.

Patch / fix

  • haproxy Debian 14, Debian 13, Debian 12 1.4.23-1

debian advisories DEBIAN-CVE-2013-1912

  • haproxy RHEL 6 1.4.22-4.el6_4
  • haproxy openshift 1 1.4.22-5.el6op

red hat advisories RHSA-2013:0868RHSA-2013:0729

  • haproxy openSUSE Tumbleweed 1.7.0-1.1

opensuse advisories openSUSE-SU-2024:10114-1

Is CVE-2013-1912 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2013-1912 updated cvss 5.1

haproxy: rewrite rules flaw can lead to arbitrary code execution

  • Red Hat Enterprise Linux Load Balancer (v. 6) haproxy 1.4.22-4.el6_4
    fixed: vendor fix RHSA-2013:0868
  • Red Hat OpenShift Enterprise Node haproxy 1.4.22-5.el6op
    fixed: vendor fix RHSA-2013:0729

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

5.57% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 5.1 AV:N/AC:H/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.