CVE-2011-1027

Name: CVE-2011-1027
Creator: NVD / NIST
Published: 2011-03-20T02:00:04.017+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.75%

Last modified Jun 16, 2026

CVE-2011-1027 is a vulnerability of currently unknown severity. Off-by-one error in the convert_query_hexchar function in html.c in cgit.cgi in cgit before 0.8.3.5 allows remote attackers to cause a denial of service (infinite loop) via a string composed of a % (percent) character followed by invalid hex characters, as demonstrated by a %gg sequence.. EPSS estimates a 3.75% chance of exploitation in the next 30 days.

Description

Off-by-one error in the convert_query_hexchar function in html.c in cgit.cgi in cgit before 0.8.3.5 allows remote attackers to cause a denial of service (infinite loop) via a string composed of a % (percent) character followed by invalid hex characters, as demonstrated by a %gg sequence.

Metrics

EPSS Probability

3.75%

88.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-193

Affected Software

Vendor	Product	Versions
Lars Hjemli	Cgit	<= 0.8.3.4
Lars Hjemli	Cgit	0.1
Lars Hjemli	Cgit	0.2
Lars Hjemli	Cgit	0.3
Lars Hjemli	Cgit	0.4
Lars Hjemli	Cgit	0.5
Lars Hjemli	Cgit	0.6
Lars Hjemli	Cgit	0.6.1
Lars Hjemli	Cgit	0.6.2
Lars Hjemli	Cgit	0.6.3
Lars Hjemli	Cgit	0.7
Lars Hjemli	Cgit	0.7.1
Lars Hjemli	Cgit	0.7.2
Lars Hjemli	Cgit	0.8
Lars Hjemli	Cgit	0.8.1
Lars Hjemli	Cgit	0.8.1.1
Lars Hjemli	Cgit	0.8.2
Lars Hjemli	Cgit	0.8.2.1
Lars Hjemli	Cgit	0.8.2.2
Lars Hjemli	Cgit	0.8.3
Lars Hjemli	Cgit	0.8.3.1
Lars Hjemli	Cgit	0.8.3.2
Lars Hjemli	Cgit	0.8.3.3
Fedoraproject	Fedora	13
Fedoraproject	Fedora	14
Fedoraproject	Fedora	15

References

http://article.gmane.org/gmane.comp.version-control.git/168493Broken Link
http://hjemli.net/git/cgit/commit/?h=stable&id=fc384b16fb9787380746000d3cea2d53fccc548eBroken Link, Patch
http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055896.htmlMailing List, Patch
http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055898.htmlMailing List, Patch
http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055966.htmlMailing List
http://openwall.com/lists/oss-security/2011/03/07/3Mailing List, Patch, Third Party Advisory
http://secunia.com/advisories/43633Broken Link, Vendor Advisory
http://secunia.com/advisories/43788Broken Link, Vendor Advisory
http://www.osvdb.org/71005Broken Link
http://www.securityfocus.com/bid/46756Broken Link, Exploit, Third Party Advisory, VDB Entry
http://www.vupen.com/english/advisories/2011/0667Broken Link
https://bugzilla.redhat.com/show_bug.cgi?id=680905Exploit, Issue Tracking, Patch
https://exchange.xforce.ibmcloud.com/vulnerabilities/65919Third Party Advisory, VDB Entry
http://article.gmane.org/gmane.comp.version-control.git/168493Broken Link
http://hjemli.net/git/cgit/commit/?h=stable&id=fc384b16fb9787380746000d3cea2d53fccc548eBroken Link, Patch
http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055896.htmlMailing List, Patch
http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055898.htmlMailing List, Patch
http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055966.htmlMailing List
http://openwall.com/lists/oss-security/2011/03/07/3Mailing List, Patch, Third Party Advisory
http://secunia.com/advisories/43633Broken Link, Vendor Advisory
http://secunia.com/advisories/43788Broken Link, Vendor Advisory
http://www.osvdb.org/71005Broken Link
http://www.securityfocus.com/bid/46756Broken Link, Exploit, Third Party Advisory, VDB Entry
http://www.vupen.com/english/advisories/2011/0667Broken Link
https://bugzilla.redhat.com/show_bug.cgi?id=680905Exploit, Issue Tracking, Patch
https://exchange.xforce.ibmcloud.com/vulnerabilities/65919Third Party Advisory, VDB Entry

Timeline

Published: Mar 20, 2011
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-1027?

How severe is CVE-2011-1027?

Severity scoring for CVE-2011-1027 is pending analysis. The EPSS model estimates a 3.75% probability of exploitation in the next 30 days.

How do I fix CVE-2011-1027?

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-2011-1027?

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

Scan your code now

Source: NVD / NIST