CVE-2018-20097 — There is a SEGV in Exiv2::Internal::TiffParserWorker::findPrimaryGroups of tiffi

There is a SEGV in Exiv2::Internal::TiffParserWorker::findPrimaryGroups of tiffimage_int.cpp in Exiv2 0.27-RC3. A crafted input will lead to a remote denial of service attack.

01What is this vulnerability?

There is a SEGV in Exiv2::Internal::TiffParserWorker::findPrimaryGroups of tiffimage_int.cpp in Exiv2 0.27-RC3. A crafted input will lead to a remote denial of service attack.

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: 2018-12-12T00:00:00.000Z
• Last modified: 2024-08-05T11:51:18.966Z

09References

• lists.debian.org — https://lists.debian.org/debian-lts-announce/2019/02/msg00038.html
• github.com — https://github.com/Exiv2/exiv2/issues/590
• github.com — https://github.com/TeamSeri0us/pocs/tree/master/exiv2/20181206
• lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
• access.redhat.com — https://access.redhat.com/errata/RHSA-2019:2101
• lists.debian.org — https://lists.debian.org/debian-lts-announce/2023/01/msg00004.html