CVE-2020-35521

2021-03-0900:00:00

ubuntu.com

libtiff

tiff file

denial of service

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS

0.002

Percentile

52.2%

JSON

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

Author	Note
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.

Author

Note

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.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchtiff< 4.0.9-5ubuntu0.5UNKNOWN
ubuntu20.04noarchtiff< 4.1.0+git191117-2ubuntu0.20.04.3UNKNOWN
ubuntu14.04noarchtiff< 4.0.3-7ubuntu0.11+esm1UNKNOWN
ubuntu16.04noarchtiff< 4.0.6-1ubuntu0.8+esm1UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	tiff	< 4.0.9-5ubuntu0.5	UNKNOWN
ubuntu	20.04	noarch	tiff	< 4.1.0+git191117-2ubuntu0.20.04.3	UNKNOWN
ubuntu	14.04	noarch	tiff	< 4.0.3-7ubuntu0.11+esm1	UNKNOWN
ubuntu	16.04	noarch	tiff	< 4.0.6-1ubuntu0.8+esm1	UNKNOWN