CVE-2017-9233
high
CVSS v3
7.5
CVSS v4 NEW
—
VIR risk
7.5
Description
XML External Entity vulnerability in libexpat 2.2.0 and earlier (Expat XML Parser Library) allows attackers to put the parser in an infinite loop using a malformed external entity definition from an external DTD.
Predictions
Exploit likelihood
83%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 2.2.1-1 | |
| sles | affected | | |
| debian | bookworm | fixed | 2.2.1-1 |
| debian | bullseye | fixed | 2.2.1-1 |
| debian | forky | fixed | 2.2.1-1 |
| debian | sid | fixed | 2.2.1-1 |
| debian | trixie | fixed | 2.2.1-1 |
| debian | 8.0 | affected | |
| debian | 9.0 | affected | |
| debian | 10.0 | affected | |
References
- https://security.archlinux.org/ASA-201706-32
- https://security.archlinux.org/ASA-201707-27
- http://www.debian.org/security/2017/dsa-3898
- http://www.openwall.com/lists/oss-security/2017/06/17/7
- http://www.securityfocus.com/bid/99276
- http://www.securitytracker.com/id/1039427
- https://github.com/libexpat/libexpat/blob/master/expat/Changes
- https://libexpat.github.io/doc/cve-2017-9233/
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://support.apple.com/HT208112
- https://support.apple.com/HT208113
- https://support.apple.com/HT208115
- https://support.apple.com/HT208144
- https://support.f5.com/csp/article/K03244804
- https://www.suse.com/security/cve/CVE-2017-9233.html
- https://security-tracker.debian.org/tracker/CVE-2017-9233
CWEs
CWE-611 CWE-835
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.