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.
Published: 2020-06-08
Score: 4.4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-2246-1 xawtv security update
EUVD EUVD EUVD-2020-5919 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.
Ubuntu USN Ubuntu USN USN-4518-1 xawtv vulnerability
History

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Subscriptions

Canonical Ubuntu Linux
Debian Debian Linux
Fedoraproject Fedora
Linuxtv Xawtv
Opensuse Backports Sle Leap
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

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

Reserved: 2020-05-29T00:00:00.000Z

Link: CVE-2020-13696

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

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

Modified: 2024-11-21T05:01:45.563

Link: CVE-2020-13696

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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Weaknesses