CVE-2022-35410 — mat2 (aka metadata anonymisation toolkit) before 0

mat2 (aka metadata anonymisation toolkit) before 0.13.0 allows ../ directory traversal during the ZIP archive cleaning process. This primarily affects mat2 web instances, in which clients could obtain sensitive information via a crafted archive.

01What is this vulnerability?

mat2 (aka metadata anonymisation toolkit) before 0.13.0 allows ../ directory traversal during the ZIP archive cleaning process. This primarily affects mat2 web instances, in which clients could obtain sensitive information via a crafted archive.

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: 2022-07-08T17:35:23.000Z
• Last modified: 2024-08-03T09:36:44.366Z

09References

• 0xacab.org — https://0xacab.org/jvoisin/mat2/-/issues/174
• 0xacab.org — https://0xacab.org/jvoisin/mat2/-/commit/beebca4bf1cd3b935824c966ce077e7bcf61038…
• dustri.org — https://dustri.org/b/mat2-0130.html
• www.debian.org — https://www.debian.org/security/2022/dsa-5185