CVE-2018-18661
An issue was discovered in LibTIFF 4.0.9. There is a NULL pointer dereference in the function LZWDecode in the file tif_lzw.c.
02 Description
An issue was discovered in LibTIFF 4.0.9. There is a NULL pointer dereference in the function LZWDecode in the file tif_lzw.c.
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 2.87% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 86.7% of scored records. A rank, not a probability.
- NVD base score
- 6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Low. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2018-10-26 13:00Z8 YR AGO
- Last updated
- 2024-08-05 11:15Z2 YR AGO
- Reserved
- 2018-10-26
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- 4ea4dfd5848ea5d64d14f1cae35e63b6b190aba05f69fee670b9ac6de67d2c5c
05 Affected products
06 References
- usn.ubuntu.comUSN-3864-1https://usn.ubuntu.com/3864-1/
- bugzilla.maptools.orghttp://bugzilla.maptools.org/show_bug.cgi?id=2819
- www.securityfocus.com105762http://www.securityfocus.com/bid/105762
- access.redhat.comRHSA-2019:2053https://access.redhat.com/errata/RHSA-2019:2053
- lists.debian.org[debian-lts-announce] 20191126 [SECURITY] [DLA 2009-1] tiff security updatehttps://lists.debian.org/debian-lts-announce/2019/11/msg00027.html
07 Fixed in
Arch Linux
- lib32-libtiff Fixed in 4.0.10-1
- libtiff Fixed in 4.0.10-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
Debian 12
- tiff Fixed in 4.0.10-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- tiff Fixed in 4.0.10-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- tiff Fixed in 4.0.10-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- tiff Fixed in 4.0.3-7ubuntu0.10
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- tiff Fixed in 4.0.6-1ubuntu0.5
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- tiff Fixed in 4.0.9-5ubuntu0.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.