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CVE-2020-35521

Published: 9 March 2021

A flaw was found in libtiff. Due to a memory allocation failure in tif_read.c, a crafted TIFF file can lead to an abort, resulting in denial of service.

Notes

AuthorNote
ccdm94
various sources, including upstream, seem to indicate that the
patch for this issue is the same as the patch for CVE-2020-35522.
No patches addressing CVE-2020-35521 specifically were found, and
the upstream changelog indicates that commit b5a935d96b is fixing
more than one issue, both being most likely closely related. No
reproducers or stack traces involving this vulnerability were
found, and the issue links (207 and 209) seem to not exist anymore.
Therefore, releases that have been patched for CVE-2020-35522 will
be considered to have been patched for CVE-2020-35521 as well, as
the only sources of information indicate that the patch for both
issues is the same.

Priority

Negligible

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
tiff
Launchpad, Ubuntu, Debian
bionic
Released (4.0.9-5ubuntu0.5)
focal
Released (4.1.0+git191117-2ubuntu0.20.04.3)
groovy Ignored
(end of life)
hirsute Not vulnerable
(4.1.0+git201212-1ubuntu1)
impish Not vulnerable
(4.3.0-1)
jammy Not vulnerable
(4.3.0-6)
trusty
Released (4.0.3-7ubuntu0.11+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream
Released (4.2.0, 4.1.0+git201212-1)
xenial
Released (4.0.6-1ubuntu0.8+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
Patches:
upstream: https://gitlab.com/libtiff/libtiff/-/commit/b5a935d96b21cda0f434230cdf8ca958cd8b4eef
upstream: https://gitlab.com/libtiff/libtiff/-/merge_requests/165

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H