CVE catalog

CVE-2020-18768

tiff: CVE-2020-18768

Severity: Medium · CVSS 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Published: Oct 3, 2021, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.28% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	tiff	sid	`4.7.2-1`	fixed
Debian	tiff	forky	`4.7.2-1`	fixed
Debian	tiff	trixie	`4.7.0-3+deb13u3`	fixed
Debian	tiff	trixie-security	`4.7.0-3+deb13u3`	fixed
Debian	tiff	bookworm	`4.5.0-6+deb12u4`	fixed
Debian	tiff	bookworm-security	`4.5.0-6+deb12u4`	fixed
Suse	tiff	linux enterprise micro 5.3	`4.0.9-150000.45.32.1`	fixed
Suse	tiff	linux enterprise micro 5.4	`4.0.9-150000.45.32.1`	fixed
Suse	tiff	linux enterprise micro 5.5	`4.0.9-150000.45.32.1`	fixed
Suse	tiff	linux enterprise module for basesystem 15 sp4	`4.0.9-150000.45.32.1`	fixed
Suse	tiff	linux enterprise module for basesystem 15 sp5	`4.0.9-150000.45.32.1`	fixed
Suse	tiff	linux enterprise module for package hub 15 sp4	`4.0.9-150000.45.32.1`	fixed
Suse	tiff	linux enterprise module for package hub 15 sp5	`4.0.9-150000.45.32.1`	fixed
Suse	tiff	linux enterprise micro 5.2	`4.0.9-150000.45.32.1`	fixed
Opensuse	tiff	leap micro 5.3	`4.0.9-150000.45.32.1`	fixed
Opensuse	tiff	leap micro 5.4	`4.0.9-150000.45.32.1`	fixed
Opensuse	tiff	leap 15.4	`4.0.9-150000.45.32.1`	fixed
Opensuse	tiff	leap 15.5	`4.0.9-150000.45.32.1`	fixed
Suse	tiff	linux enterprise software development kit 12 sp5	`4.0.9-44.71.1`	fixed
Suse	tiff	linux enterprise server 12 sp5	`4.0.9-44.71.1`	fixed
Suse	tiff	linux enterprise server for sap applications 12 sp5	`4.0.9-44.71.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	tiff	source	sid	`4.0.10+git190814-1`	not yet assigned	Not reported	Not reported
Debian	tiff	source	forky	`4.0.10+git190814-1`	not yet assigned	Not reported	Not reported
Debian	tiff	source	trixie	`4.0.10+git190814-1`	not yet assigned	Not reported	Not reported
Debian	tiff	source	bookworm	`4.0.10+git190814-1`	not yet assigned	Not reported	Not reported
Suse	tiff	rpm	linux enterprise micro 5.3	`4.0.9-150000.45.32.1`	Not reported	SUSE-SU-2023:4370-1	Not reported
Suse	tiff	rpm	linux enterprise micro 5.4	`4.0.9-150000.45.32.1`	Not reported	SUSE-SU-2023:4370-1	Not reported
Suse	tiff	rpm	linux enterprise micro 5.5	`4.0.9-150000.45.32.1`	Not reported	SUSE-SU-2023:4370-1	Not reported
Suse	tiff	rpm	linux enterprise module for basesystem 15 sp4	`4.0.9-150000.45.32.1`	Not reported	SUSE-SU-2023:4370-1	Not reported
Suse	tiff	rpm	linux enterprise module for basesystem 15 sp5	`4.0.9-150000.45.32.1`	Not reported	SUSE-SU-2023:4370-1	Not reported
Suse	tiff	rpm	linux enterprise module for package hub 15 sp4	`4.0.9-150000.45.32.1`	Not reported	SUSE-SU-2023:4370-1	Not reported
Suse	tiff	rpm	linux enterprise module for package hub 15 sp5	`4.0.9-150000.45.32.1`	Not reported	SUSE-SU-2023:4370-1	Not reported
Suse	tiff	rpm	linux enterprise micro 5.2	`4.0.9-150000.45.32.1`	Not reported	SUSE-SU-2023:4370-1	Not reported
Opensuse	tiff	rpm	leap micro 5.3	`4.0.9-150000.45.32.1`	Not reported	SUSE-SU-2023:4370-1	Not reported
Opensuse	tiff	rpm	leap micro 5.4	`4.0.9-150000.45.32.1`	Not reported	SUSE-SU-2023:4370-1	Not reported
Opensuse	tiff	rpm	leap 15.4	`4.0.9-150000.45.32.1`	Not reported	SUSE-SU-2023:4370-1	Not reported
Opensuse	tiff	rpm	leap 15.5	`4.0.9-150000.45.32.1`	Not reported	SUSE-SU-2023:4370-1	Not reported
Suse	tiff	rpm	linux enterprise software development kit 12 sp5	`4.0.9-44.71.1`	Not reported	SUSE-SU-2023:4371-1	Not reported
Suse	tiff	rpm	linux enterprise server 12 sp5	`4.0.9-44.71.1`	Not reported	SUSE-SU-2023:4371-1	Not reported
Suse	tiff	rpm	linux enterprise server for sap applications 12 sp5	`4.0.9-44.71.1`	Not reported	SUSE-SU-2023:4371-1	Not reported

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[libtiff5-dev]Unknown
Source package: [tiff]
Details (4)
- 4.5.0-6+deb12u4 · amd64 · bookworm
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
- 4.5.0-6+deb12u4 · arm64 · bookworm
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
- 4.5.0-6+deb12u4 · amd64 · bookworm-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
- 4.5.0-6+deb12u4 · arm64 · bookworm-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
[libtiff6]Unknown
Source package: [tiff]
Details (4)
- 4.5.0-6+deb12u4 · amd64 · bookworm
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
- 4.5.0-6+deb12u4 · arm64 · bookworm
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
- 4.5.0-6+deb12u4 · amd64 · bookworm-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
- 4.5.0-6+deb12u4 · arm64 · bookworm-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
[libtiff-dev]Unknown
Source package: [tiff]
Details (4)
- 4.5.0-6+deb12u4 · amd64 · bookworm
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
- 4.5.0-6+deb12u4 · arm64 · bookworm
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
- 4.5.0-6+deb12u4 · amd64 · bookworm-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
- 4.5.0-6+deb12u4 · arm64 · bookworm-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
[libtiff-doc]Unknown
Source package: [tiff]
Details (4)
- 4.5.0-6+deb12u4 · all · bookworm
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
- 4.5.0-6+deb12u4 · all · bookworm
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
- 4.5.0-6+deb12u4 · all · bookworm-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
- 4.5.0-6+deb12u4 · all · bookworm-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
[libtiff-opengl]Unknown
Source package: [tiff]
Details (4)
- 4.5.0-6+deb12u4 · amd64 · bookworm
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
- 4.5.0-6+deb12u4 · arm64 · bookworm
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
- 4.5.0-6+deb12u4 · amd64 · bookworm-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
- 4.5.0-6+deb12u4 · arm64 · bookworm-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
[libtiff-tools]Unknown
Source package: [tiff]
Details (4)
- 4.5.0-6+deb12u4 · amd64 · bookworm
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
- 4.5.0-6+deb12u4 · arm64 · bookworm
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
- 4.5.0-6+deb12u4 · amd64 · bookworm-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
- 4.5.0-6+deb12u4 · arm64 · bookworm-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
[libtiffxx6]Unknown
Source package: [tiff]
Details (4)
- 4.5.0-6+deb12u4 · amd64 · bookworm
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
- 4.5.0-6+deb12u4 · arm64 · bookworm
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
- 4.5.0-6+deb12u4 · amd64 · bookworm-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12
- 4.5.0-6+deb12u4 · arm64 · bookworm-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · bookworm; dsa · tiff · debian · 12

[Debian 13 (Trixie)]

[libtiff5-dev]Unknown
Source package: [tiff]
Details (4)
- 4.7.0-3+deb13u2 · amd64 · trixie
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
- 4.7.0-3+deb13u2 · arm64 · trixie
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
- 4.7.0-3+deb13u3 · amd64 · trixie-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
- 4.7.0-3+deb13u3 · arm64 · trixie-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
[libtiff6]Unknown
Source package: [tiff]
Details (4)
- 4.7.0-3+deb13u2 · amd64 · trixie
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
- 4.7.0-3+deb13u2 · arm64 · trixie
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
- 4.7.0-3+deb13u3 · amd64 · trixie-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
- 4.7.0-3+deb13u3 · arm64 · trixie-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
[libtiff-dev]Unknown
Source package: [tiff]
Details (4)
- 4.7.0-3+deb13u2 · amd64 · trixie
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
- 4.7.0-3+deb13u2 · arm64 · trixie
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
- 4.7.0-3+deb13u3 · amd64 · trixie-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
- 4.7.0-3+deb13u3 · arm64 · trixie-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
[libtiff-doc]Unknown
Source package: [tiff]
Details (4)
- 4.7.0-3+deb13u2 · all · trixie
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
- 4.7.0-3+deb13u2 · all · trixie
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
- 4.7.0-3+deb13u3 · all · trixie-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
- 4.7.0-3+deb13u3 · all · trixie-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
[libtiff-opengl]Unknown
Source package: [tiff]
Details (4)
- 4.7.0-3+deb13u2 · amd64 · trixie
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
- 4.7.0-3+deb13u2 · arm64 · trixie
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
- 4.7.0-3+deb13u3 · amd64 · trixie-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
- 4.7.0-3+deb13u3 · arm64 · trixie-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
[libtiff-tools]Unknown
Source package: [tiff]
Details (4)
- 4.7.0-3+deb13u2 · amd64 · trixie
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
- 4.7.0-3+deb13u2 · arm64 · trixie
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
- 4.7.0-3+deb13u3 · amd64 · trixie-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
- 4.7.0-3+deb13u3 · arm64 · trixie-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
[libtiffxx6]Unknown
Source package: [tiff]
Details (4)
- 4.7.0-3+deb13u2 · amd64 · trixie
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
- 4.7.0-3+deb13u2 · arm64 · trixie
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
- 4.7.0-3+deb13u3 · amd64 · trixie-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13
- 4.7.0-3+deb13u3 · arm64 · trixie-security
  Fixed · Fixed: 4.0.10+git190814-1
  dsa · tiff · debian · 13

Observed: Oct 23, 2026, 5:48:54 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]