Upstream information

CVE-2020-13696 at MITRE

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.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having moderate severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 3.6
Vector AV:L/AC:L/Au:N/C:P/I:P/A:N
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact None
CVSS v3 Scores
  National Vulnerability Database
Base Score 4.4
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Access Vector Local
Access Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact Low
Integrity Impact Low
Availability Impact None
CVSSv3 Version 3.1
SUSE Bugzilla entry: 1171655 [RESOLVED / FIXED]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Linux Enterprise Workstation Extension 12 SP4
  • tv-common >= 3.103-6.3.1
  • v4l-conf >= 3.103-6.3.1
  • v4l-tools >= 3.103-6.3.1
  • xawtv >= 3.103-6.3.1
Patchnames:
SUSE-SLE-WE-12-SP4-2020-1712
SUSE Linux Enterprise Workstation Extension 12 SP5
  • tv-common >= 3.103-6.3.1
  • v4l-conf >= 3.103-6.3.1
  • v4l-tools >= 3.103-6.3.1
  • xawtv >= 3.103-6.3.1
Patchnames:
SUSE-SLE-WE-12-SP5-2020-1712
openSUSE Leap 15.1
  • alevtd >= 3.103-lp151.3.3.1
  • alevtd-debuginfo >= 3.103-lp151.3.3.1
  • motv >= 3.103-lp151.3.3.1
  • motv-debuginfo >= 3.103-lp151.3.3.1
  • pia >= 3.103-lp151.3.3.1
  • pia-debuginfo >= 3.103-lp151.3.3.1
  • tv-common >= 3.103-lp151.3.3.1
  • tv-common-debuginfo >= 3.103-lp151.3.3.1
  • v4l-conf >= 3.103-lp151.3.3.1
  • v4l-conf-debuginfo >= 3.103-lp151.3.3.1
  • v4l-tools >= 3.103-lp151.3.3.1
  • v4l-tools-debuginfo >= 3.103-lp151.3.3.1
  • xawtv >= 3.103-lp151.3.3.1
  • xawtv-debuginfo >= 3.103-lp151.3.3.1
  • xawtv-debugsource >= 3.103-lp151.3.3.1
Patchnames:
openSUSE-2020-784


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s) Source package State
SUSE Linux Enterprise Desktop 12 xawtv Analysis
SUSE Linux Enterprise Workstation Extension 12 xawtv Released