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AUSCERT External Security Bulletin Redistribution
ESB-2020.2056
xawtv security update
15 June 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: xawtv
Publisher: Debian
Operating System: Debian GNU/Linux 8
Linux variants
Impact/Access: Modify Arbitrary Files -- Existing Account
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-13696
Original Bulletin:
https://www.debian.org/lts/security/2020/dla-2246
Comment: This advisory references vulnerabilities in products which run on
platforms other than Debian. It is recommended that administrators
running xawtv check for an updated version of the software for their
operating system.
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Package : xawtv
Version : 3.103-3+deb8u1
CVE ID : CVE-2020-13696
Debian Bug : 962221
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.
For Debian 8 "Jessie", this problem has been fixed in version
3.103-3+deb8u1.
We recommend that you upgrade your xawtv packages.
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
Best,
Utkarsh
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