Vulnerability Details : CVE-2020-13696
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 affected by CVE-2020-13696
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
- cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
- cpe:2.3:a:opensuse:backports_sle:15.0:sp1:*:*:*:*:*:*
- cpe:2.3:a:linuxtv:xawtv:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-13696
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-13696
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
3.6
|
LOW | AV:L/AC:L/Au:N/C:P/I:P/A:N |
3.9
|
4.9
|
NIST | |
4.4
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
1.8
|
2.5
|
NIST |
CWE ids for CVE-2020-13696
-
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-13696
-
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00009.html
[security-announce] openSUSE-SU-2020:0784-1: moderate: Security update fMailing List;Third Party Advisory
-
https://git.linuxtv.org/xawtv3.git/commit/?id=36dc44e68e5886339b4a0fbe3f404fb1a4fd2292
xawtv3.git - xawtv 3.xPatch;Vendor Advisory
-
https://git.linuxtv.org/xawtv3.git/commit/?id=8e3feea862db68d3ca0886f46cd99fab45d2db7c
xawtv3.git - xawtv 3.xPatch;Vendor Advisory
-
https://git.linuxtv.org/xawtv3.git/commit/?id=31f31f9cbaee7be806cba38e0ff5431bd44b20a3
xawtv3.git - xawtv 3.xPatch;Vendor Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/I7XWAO7W2DGA6M52JGK2TDWUGF62Q2KY/
[SECURITY] Fedora 31 Update: xawtv-3.107-2.fc31 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ELOXU5LXQSQOXX64D4BICZV3TQWOBXHC/
[SECURITY] Fedora 32 Update: xawtv-3.107-1.fc32 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00013.html
[security-announce] openSUSE-SU-2020:0787-1: moderate: Security update fMailing List;Third Party Advisory
-
http://www.openwall.com/lists/oss-security/2020/06/04/6
oss-security - xawtv: CVE-2020-13696: v4l-conf setuid-root program allows file existence tests and open(..., O_RDRW) on arbitrary filesIssue Tracking;Mailing List;Third Party Advisory
-
https://usn.ubuntu.com/4518-1/
USN-4518-1: xawtv vulnerability | Ubuntu security notices | UbuntuThird Party Advisory
-
https://lists.debian.org/debian-lts-announce/2020/06/msg00018.html
[SECURITY] [DLA 2246-1] xawtv security updateMailing List;Third Party Advisory
-
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2020-13696
Invalid Bug IDBroken Link;Issue Tracking;Third Party Advisory
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