CVE-2020-13696

CVSS V2 Low 3.6 CVSS V3 Medium 4.4
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.
Overview
  • CVE ID
  • CVE-2020-13696
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-06-08T17:15:10
  • Last Modified Date
  • 2022-04-28T19:30:52
Weakness Enumerations
CWE URL
CWE-863 http://cwe.mitre.org/data/definitions/863.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:linuxtv:xawtv:*:*:*:*:*:*:*:* 1 OR 3.107
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:opensuse:backports_sle:15.0:sp1:*:*:*:*:*:* 1 OR
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:P/I:P/A:N
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • NONE
  • Base Score
  • 3.6
  • Severity
  • LOW
  • Exploitability Score
  • 3.9
  • Impact Score
  • 4.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • LOW
  • Availability Impact
  • NONE
  • Base Score
  • 4.4
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 1.8
  • Impact Score
  • 2.5
References
Reference URL Reference Tags
https://git.linuxtv.org/xawtv3.git/commit/?id=31f31f9cbaee7be806cba38e0ff5431bd44b20a3 Patch Vendor Advisory
http://www.openwall.com/lists/oss-security/2020/06/04/6 Issue Tracking Mailing List Third Party Advisory
https://git.linuxtv.org/xawtv3.git/commit/?id=36dc44e68e5886339b4a0fbe3f404fb1a4fd2292 Patch Vendor Advisory
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2020-13696 Broken Link Issue Tracking Third Party Advisory
https://git.linuxtv.org/xawtv3.git/commit/?id=8e3feea862db68d3ca0886f46cd99fab45d2db7c Patch Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00013.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00009.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/06/msg00018.html Mailing List Third Party Advisory
https://usn.ubuntu.com/4518-1/ Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ELOXU5LXQSQOXX64D4BICZV3TQWOBXHC/ Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/I7XWAO7W2DGA6M52JGK2TDWUGF62Q2KY/ Mailing List Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-13696
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13696
History
Created Old Value New Value Data Type Notes
2022-05-08 06:20:43 Added to TrackCVE
2022-12-04 17:32:10 2020-06-08T17:15Z 2020-06-08T17:15:10 CVE Published Date updated
2022-12-04 17:32:10 2022-04-28T19:30:52 CVE Modified Date updated
2022-12-04 17:32:10 Analyzed Vulnerability Status updated