CVE-2020-13696
Fixed in a distro release EPSS <1%
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.
Products: linuxtv xawtv, debian_linux, opensuse backports_sle, opensuse leap, fedoraproject fedora, canonical ubuntu_linux
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 12 | xawtv | 3.107-1 |
| Debian 13 | xawtv | 3.107-1 |
| Debian 14 | xawtv | 3.107-1 |
| Debian 8 | xawtv | 3.103-3+deb8u1 |
| SUSE Linux Enterprise Workstation Extension 12 SP4 | xawtv | 3.103-6.3.1 |
| SUSE Linux Enterprise Workstation Extension 12 SP5 | xawtv | 3.103-6.3.1 |
| SUSE Package Hub 15 SP1 | xawtv | 3.103-bp151.4.3.1 |
| Ubuntu 16.04 LTS | xawtv | 3.103-3+deb8u1build0.16.04.1 |
| Ubuntu 18.04 LTS | xawtv | no fix |
| Ubuntu 20.04 LTS | xawtv | no fix |
| openSUSE Leap 15.1 | xawtv | 3.103-lp151.3.3.1 |
| openSUSE Tumbleweed | xawtv | 3.107-2.5 |