CVE-2018-12932 — PlayEnhMetaFileRecord in enhmetafile

PlayEnhMetaFileRecord in enhmetafile.c in Wine 3.7 allows attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact by triggering a large pAlphaBlend->cbBitsSrc value.

01What is this vulnerability?

PlayEnhMetaFileRecord in enhmetafile.c in Wine 3.7 allows attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact by triggering a large pAlphaBlend->cbBitsSrc value.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2018-06-28T14:00:00.000Z
• Last modified: 2024-09-17T04:20:35.698Z

09References

• source.winehq.org — https://source.winehq.org/git/wine.git/commit/b6da3547d8990c3c3affc3a5865aefd2a0…
• source.winehq.org — https://source.winehq.org/git/wine.git/commit/8d2676fd14f130f9e8f06744743423168b…
• bugs.launchpad.net — https://bugs.launchpad.net/ubuntu/+source/wine/+bug/1764719
• bugs.winehq.org — https://bugs.winehq.org/attachment.cgi?id=61284
• bugs.winehq.org — https://bugs.winehq.org/show_bug.cgi?id=45105