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.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2020-06-08T16:32:54

Updated: 2024-08-04T12:25:16.525Z

Reserved: 2020-05-29T00:00:00

Link: CVE-2020-13696

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2020-06-08T17:15:10.160

Modified: 2023-11-07T03:16:47.707

Link: CVE-2020-13696

cve-icon Redhat

No data.