CVE-2022-0562 — Null source pointer passed as an argument to memcpy() function within TIFFReadDi

Null source pointer passed as an argument to memcpy() function within TIFFReadDirectory() in tif_dirread.c in libtiff versions from 4.0 to 4.3.0 could lead to Denial of Service via crafted TIFF file. For users that compile libtiff from sources, a fix is available with commit 5615

01What is this vulnerability?

Null source pointer passed as an argument to memcpy() function within TIFFReadDirectory() in tif_dirread.c in libtiff versions from 4.0 to 4.3.0 could lead to Denial of Service via crafted TIFF file. For users that compile libtiff from sources, a fix is available with commit 561599c.

02Affected products

Vendor	Product	Versions
libtiff	libtiff	>=4.0, <=4.3.0

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: 2022-02-11T00:00:00.000Z
• Last modified: 2024-08-02T23:32:46.296Z

09References

• gitlab.com — https://gitlab.com/libtiff/libtiff/-/issues/362
• gitlab.com — https://gitlab.com/gitlab-org/build/omnibus-mirror/libtiff/-/commit/561599c99f98…
• gitlab.com — https://gitlab.com/gitlab-org/cves/-/blob/master/2022/CVE-2022-0562.json
• lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
• lists.debian.org — https://lists.debian.org/debian-lts-announce/2022/03/msg00001.html
• security.netapp.com — https://security.netapp.com/advisory/ntap-20220318-0001/
• www.debian.org — https://www.debian.org/security/2022/dsa-5108
• security.gentoo.org — https://security.gentoo.org/glsa/202210-10