Vulnerability Report

CVE-2020-16123

Title: PulseAudio Snap Policy Module Race Condition

Information Disclosure

Proof Of Concept

No public PoC currently indexed for CVE-2020-16123.

CWE Category CWE-362
Published Date Dec 04, 2020
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 4.4 CVSS v3.1
Exploit Probability (EPSS)
0.31%

Vulnerability Summary

CVE-2020-16123: An Ubuntu-specific patch in PulseAudio created a race condition where the snap policy module would fail to identify a client connection from a snap as coming from a snap if SCM_CREDENTIALS were missing, allowing the snap to connect to PulseAudio without proper confinement. This could be exploited by an attacker to expose sensitive information. Fixed in 1:13.99.3-1ubuntu2, 1:13.99.2-1ubuntu2.1, 1:13.99.1-1ubuntu3.8, 1:11.1-1ubuntu7.11, and 1:8.0-0ubuntu3.15.

Impacted Vendors

U
ubuntu 1
C
canonical 1

Reference Links

https://launchpad.net/bugs/1895928 https://ubuntu.com/USN-4640-1 https://launchpad.net/bugs/1895928 https://ubuntu.com/USN-4640-1
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
4.4
Attack Vector
LOCAL
Complexity
HIGH
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
4.7
Attack Vector
LOCAL
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS v2.0
Source Entity [email protected]
Severity LOW
2.1
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:L/AC:L/Au:N/C:P/I:N/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2020-16123 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector LOCAL
Complexity HIGH
Privileges N/A
Interaction REQUIRED
CVSS Vector String CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N

Affected Stack

No specific products linked.