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Ubuntu 16.04 LTS : xawtv vulnerability (USN-4518-1)

medium Nessus Plugin ID 140649

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 16.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-4518-1 advisory.

 - 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. (CVE-2020-13696)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-4518-1

Plugin Details

Severity: Medium

ID: 140649

File Name: ubuntu_USN-4518-1.nasl

Version: 1.4

Type: local

Agent: unix

Published: 9/17/2020

Updated: 10/20/2023

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.3

CVSS v2

Risk Factor: Low

Base Score: 3.6

Temporal Score: 2.7

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2020-13696

CVSS v3

Risk Factor: Medium

Base Score: 4.4

Temporal Score: 3.9

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:alevtd, p-cpe:/a:canonical:ubuntu_linux:fbtv, p-cpe:/a:canonical:ubuntu_linux:pia, p-cpe:/a:canonical:ubuntu_linux:radio, p-cpe:/a:canonical:ubuntu_linux:scantv, p-cpe:/a:canonical:ubuntu_linux:streamer, p-cpe:/a:canonical:ubuntu_linux:ttv, p-cpe:/a:canonical:ubuntu_linux:v4l-conf, p-cpe:/a:canonical:ubuntu_linux:webcam, p-cpe:/a:canonical:ubuntu_linux:xawtv, p-cpe:/a:canonical:ubuntu_linux:xawtv-plugin-qt, p-cpe:/a:canonical:ubuntu_linux:xawtv-plugins, p-cpe:/a:canonical:ubuntu_linux:xawtv-tools

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Ease: No known exploits are available

Patch Publication Date: 9/17/2020

Vulnerability Publication Date: 6/8/2020

Reference Information

CVE: CVE-2020-13696

USN: 4518-1