High severity · published Jun 3, 2024
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
7.8
CVSS
0.4%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 32% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AP
Apport · Canonical Ltd.
before 2.21.0 · source: vendor, NVD, CISA
UL
Ubuntu Linux · Canonical
18.04; 20.04; 21.10; 22.04 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3899
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-3899
Issue Tracking
https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1948376
Vendor Advisory
https://ubuntu.com/security/notices/USN-5427-1
Third Party Advisory
https://www.cve.org/CVERecord?id=CVE-2021-3899
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