CVE-2020-18768: libtiff Out-of-bounds Write
CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2020-18768DEBIAN-CVE-2020-18768
Published 22-08-2023Last modified 04-10-2024
Vulnerability summary
CVE-2020-18768 is a medium (CVSS 5.5) Out-of-bounds Write vulnerability in libtiff. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 18.9% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
5.5/10
010
Medium · v3.1 (NVD)EPSS score
0.28%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 3 · Related 2Timeline
- 22-08-2023PublishedVulnerability first disclosed.
- 04-10-2024Last modifiedVulnerability information updated.
Description
There exists one heap buffer overflow in _TIFFmemcpy in tif_unix.c in libtiff 4.0.10, which allows an attacker to cause a denial-of-service through a crafted tiff file.
CVSS metrics
3 scores · 3 sources · 1 versionMedium 5.5Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.28%
Chance of exploitation in the next 30 days
Percentile
19%
Versus all other CVEs
30-day change
0.00 pp
From 0.28% on 19-09-2026
19-09-202619-10-2026
EPSS score0.28%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (bugzilla.maptools.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Debian1 product
- tiff< 4.0.10+git190814-1
Libtiff1 product
- libtiff4.0.10
Ubuntu1 product
- tiff< 4.0.3-7ubuntu0.11+esm9 | < 4.0.6-1ubuntu0.8+esm13 | < 4.0.9-5ubuntu0.10+esm3 | < 4.1.0+git191117-2ubuntu0.20.04.10 | < 4.3.0-6ubuntu0.6
3 vendors · 3 products
