LinuxTV xawtv up to 3.106 v4l-conf.c dev_open permission assignment

CVSS Meta Temp Score
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CTI Interest Score
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4.7$0-$5k0.00

Summaryinfo

A vulnerability has been found in LinuxTV xawtv up to 3.106 and classified as critical. Impacted is the function dev_open of the file v4l-conf.c. This manipulation causes permission assignment. This vulnerability is handled as CVE-2020-13696. It is possible to launch the attack on the local host. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in LinuxTV xawtv up to 3.106 and classified as critical. Affected by this vulnerability is the function dev_open of the file v4l-conf.c. The manipulation with an unknown input leads to a permission assignment vulnerability. The CWE definition for the vulnerability is CWE-732. The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was released 06/08/2020 (oss-sec). It is possible to read the advisory at openwall.com. This vulnerability is known as CVE-2020-13696 since 05/29/2020. Attacking locally is a requirement. A single authentication is necessary for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 3.107 eliminates this vulnerability.

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Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.4
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Permission assignment
CWE: CWE-732 / CWE-275 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: xawtv 3.107

Timelineinfo

05/29/2020 🔍
06/08/2020 +10 days 🔍
06/09/2020 +1 days 🔍
10/22/2020 +135 days 🔍

Sourcesinfo

Advisory: openwall.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-13696 (🔍)
GCVE (CVE): GCVE-0-2020-13696
GCVE (VulDB): GCVE-100-156271

Entryinfo

Created: 06/09/2020 06:59
Updated: 10/22/2020 18:29
Changes: 06/09/2020 06:59 (40), 06/09/2020 07:04 (17), 10/22/2020 18:29 (1)
Complete: 🔍
Cache ID: 216::103

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