CVE-2013-5705

Name: CVE-2013-5705
Creator: NVD / NIST
Published: 2014-04-15T10:55:11.197+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.65%

Last modified Jun 16, 2026

CVE-2013-5705 is a vulnerability of currently unknown severity. apache2/modsecurity.c in ModSecurity before 2.7.6 allows remote attackers to bypass rules by using chunked transfer coding with a capitalized Chunked value in the Transfer-Encoding HTTP header.. EPSS estimates a 2.65% chance of exploitation in the next 30 days.

Description

apache2/modsecurity.c in ModSecurity before 2.7.6 allows remote attackers to bypass rules by using chunked transfer coding with a capitalized Chunked value in the Transfer-Encoding HTTP header.

Metrics

EPSS Probability

2.65%

83.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Trustwave	Modsecurity	< 2.7.6
Debian	Debian Linux	7.0
Debian	Debian Linux	8.0

References

http://martin.swende.se/blog/HTTPChunked.htmlExploit, Third Party Advisory
http://www.debian.org/security/2014/dsa-2991Third Party Advisory
https://github.com/SpiderLabs/ModSecurity/commit/f8d441cd25172fdfe5b613442fedfc0da3cc333dPatch, Third Party Advisory
http://martin.swende.se/blog/HTTPChunked.htmlExploit, Third Party Advisory
http://www.debian.org/security/2014/dsa-2991Third Party Advisory
https://github.com/SpiderLabs/ModSecurity/commit/f8d441cd25172fdfe5b613442fedfc0da3cc333dPatch, Third Party Advisory

Timeline

Published: Apr 15, 2014
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2013-5705?

apache2/modsecurity.c in ModSecurity before 2.7.6 allows remote attackers to bypass rules by using chunked transfer coding with a capitalized Chunked value in the Transfer-Encoding HTTP header.

How severe is CVE-2013-5705?

Severity scoring for CVE-2013-5705 is pending analysis. The EPSS model estimates a 2.65% probability of exploitation in the next 30 days.

How do I fix CVE-2013-5705?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2013-5705?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST