UBUNTU-CVE-2020-13696

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Source
https://ubuntu.com/security/CVE-2020-13696
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-13696.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2020-13696
Related
Published
2020-06-08T17:15:00Z
Modified
2024-10-15T14:07:29Z
Severity
  • 4.4 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
Summary
[none]
Details

An issue was discovered in LinuxTV xawtv before 3.107. The function devopen() 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 ORDWR. 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.

References

Affected packages

Ubuntu:16.04:LTS / xawtv

Package

Name
xawtv
Purl
pkg:deb/ubuntu/xawtv?arch=src?distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.103-3+deb8u1build0.16.04.1

Affected versions

3.*

3.103-3
3.103-3build1

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "alevtd"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "alevtd-dbgsym"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "fbtv"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "fbtv-dbgsym"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "pia"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "pia-dbgsym"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "radio"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "radio-dbgsym"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "scantv"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "scantv-dbgsym"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "streamer"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "streamer-dbgsym"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "ttv"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "ttv-dbgsym"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "v4l-conf"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "v4l-conf-dbgsym"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "webcam"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "webcam-dbgsym"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "xawtv"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "xawtv-dbg"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "xawtv-dbgsym"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "xawtv-plugin-qt"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "xawtv-plugin-qt-dbgsym"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "xawtv-plugins"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "xawtv-plugins-dbgsym"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "xawtv-tools"
        },
        {
            "binary_version": "3.103-3+deb8u1build0.16.04.1",
            "binary_name": "xawtv-tools-dbgsym"
        }
    ]
}

Ubuntu:Pro:18.04:LTS / xawtv

Package

Name
xawtv
Purl
pkg:deb/ubuntu/xawtv?arch=src?distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.103-4build1

Ecosystem specific 

{
    "ubuntu_priority": "low"
}

Ubuntu:20.04:LTS / xawtv

Package

Name
xawtv
Purl
pkg:deb/ubuntu/xawtv?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.106-1

Ecosystem specific 

{
    "ubuntu_priority": "low"
}