CVE-2021-3899

There is a race condition in the 'replaced executable' detection that, with the correct local configuration, allow an attacker to execute arbitrary code as root.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1948376	Issue Tracking Patch
https://ubuntu.com/security/notices/USN-5427-1	Vendor Advisory
https://www.cve.org/CVERecord?id=CVE-2021-3899	Third Party Advisory
https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1948376	Issue Tracking Patch
https://ubuntu.com/security/notices/USN-5427-1	Vendor Advisory
https://www.cve.org/CVERecord?id=CVE-2021-3899	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:canonical:apport:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::
	cpe:2.3:o:canonical:ubuntu_linux:20.04::::lts:::
	cpe:2.3:o:canonical:ubuntu_linux:21.10:::::::*
	cpe:2.3:o:canonical:ubuntu_linux:22.04::::lts:::

History

No history.

Information

Published : 2024-06-03 19:15

Updated : 2025-08-26 17:21

NVD link : CVE-2021-3899

Mitre link : CVE-2021-3899

CVE.ORG link : CVE-2021-3899

JSON object : View

Products Affected

canonical

ubuntu_linux
apport

CWE

CWE-367

Time-of-check Time-of-use (TOCTOU) Race Condition

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