CVEvulnerability
CVE-2020-13696
4.4 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2020-06-08
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 4.4 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
- CVSS 2.0 ([email protected])
- 3.6 LOW — AV:L/AC:L/Au:N/C:P/I:P/A:N
- Weaknesses
- CWE-863
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.
Affected configurations
• linuxtv xawtv (< 3.107)
• debian debian linux 8.0
• opensuse backports sle 15.0
• opensuse leap 15.1
• fedoraproject fedora 31
• fedoraproject fedora 32
• canonical ubuntu linux 16.04
Related
Weakness · CWE (1)
- CWE-863 Incorrect Authorization weakness
References
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00009.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00013.html Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/06/04/6 Issue Tracking, Mailing List, Third Party 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=31f31f9cbaee7be806cba38e0ff5431bd44b20a3 Patch, Vendor Advisory
- https://git.linuxtv.org/xawtv3.git/commit/?id=36dc44e68e5886339b4a0fbe3f404fb1a4fd2292 Patch, Vendor Advisory
- https://git.linuxtv.org/xawtv3.git/commit/?id=8e3feea862db68d3ca0886f46cd99fab45d2db7c Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/06/msg00018.html Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ELOXU5LXQSQOXX64D4BICZV3TQWOBXHC/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7XWAO7W2DGA6M52JGK2TDWUGF62Q2KY/ lists.fedoraproject.org
- https://usn.ubuntu.com/4518-1/ Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00009.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00013.html Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/06/04/6 Issue Tracking, Mailing List, Third Party 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=31f31f9cbaee7be806cba38e0ff5431bd44b20a3 Patch, Vendor Advisory
- https://git.linuxtv.org/xawtv3.git/commit/?id=36dc44e68e5886339b4a0fbe3f404fb1a4fd2292 Patch, Vendor Advisory
- https://git.linuxtv.org/xawtv3.git/commit/?id=8e3feea862db68d3ca0886f46cd99fab45d2db7c Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/06/msg00018.html Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ELOXU5LXQSQOXX64D4BICZV3TQWOBXHC/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7XWAO7W2DGA6M52JGK2TDWUGF62Q2KY/ lists.fedoraproject.org
- https://usn.ubuntu.com/4518-1/ Third Party Advisory