NULL pointer dereference in Libtiff
CVE-2023-2731
A NULL pointer dereference flaw was found in Libtiff's LZWDecode() function in the libtiff/tif_lzw.c file. This flaw allows a local attacker to craft specific input data that can cause the program to dereference a NULL pointer when decompressing a TIFF format file, resulting in a program crash or denial of service.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (34.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 34.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Libtiff
- Fedoraproject Fedora — versions 38
- Red Hat Enterprise Linux — versions 9.0
- Libtiff — versions Fixed in libtiff v4.5.0
Weakness classification (CWE)
References
- gitlab.com/libtiff/libtiff/-/issues/548 (Exploit, Patch, Third Party Advisory, Issue Tracking)
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- github.com/libsdl-org/libtiff/commit/9be22b639ea69e102d3847dca4c53ef025e9527b (Patch)
- access.redhat.com/security/cve/CVE-2023-2731 (Third Party Advisory)
- security.netapp.com/advisory/ntap-20230703-0009/
Frequently asked questions
- What is CVE-2023-2731?
- CVE-2023-2731 is a medium-severity vulnerability in Libtiff, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2023-05-17.
- How severe is CVE-2023-2731?
- Medium severity. CVSS v3 base score is 5.5 out of 10.