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CVE-2020-13696

Common vulnerabilities & exposures (CVE)

CVE databaseCVE database blogpostRelease & EoL database
 
Published at: - 08-06-2020 07:15
Last modified: - 28-04-2022 09:30
Total changes: - 3

Description

An issue was discovered in LinuxTV xawtv before 3.107. The function dev_open() in v4l-conf.c does not perform sufficient checks to prevent an unprivileged caller of the program from opening unintended filesystem paths. This allows a local attacker with access to the v4l-conf setuid-root program to test for the existence of arbitrary files and to trigger an open on arbitrary files with mode O_RDWR. To achieve this, relative path components need to be added to the device path, as demonstrated by a v4l-conf -c /dev/../root/.bash_history command.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Low
Attack complexity
Local
Attack vector
None
Availability
Low
Confidentiality
Low
Integrity
Low
Privileges required
Unchanged
Scope
None
User interaction
4.4
Base score
1.8
2.5
Exploitability score
Impact score
 

Verification logic

OR
OR
vendor=linuxtv AND product=xawtv AND versionEndExcluding=3.107
OR
vendor=Debian AND product=debian_linux AND version=8.0
OR
vendor=opensuse AND product=backports_sle AND version=15.0 AND update=sp1
vendor=opensuse AND product=leap AND version=15.1
OR
vendor=fedoraproject AND product=fedora AND version=31
vendor=fedoraproject AND product=fedora AND version=32
OR
vendor=canonical AND product=ubuntu_linux AND version=16.04 AND software_edition=esm
 

Reference

 


Keywords

NVD

 

CVE-2020-13696

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures

 

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