High severity · published Dec 23, 2021
CVE-2021-3621
A flaw was found in SSSD, where the sssctl command was vulnerable to shell command injection via the logs-fetch and cache-expire subcommands
8.8
CVSS
2.6%
EPSS
No
On KEV
Description
A flaw was found in SSSD, where the sssctl command was vulnerable to shell command injection via the logs-fetch and cache-expire subcommands. This flaw allows an attacker to trick the root user into running a specially crafted sssctl command, such as via sudo, to gain root access. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.6% · higher than 85% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EL
Enterprise Linux · Redhat
6.0; 7.0; 8.0 · source: NVD
EL
Enterprise Linux Eus · Redhat
8.1; 8.2 · source: NVD
EL
Enterprise Linux Server Aus · Redhat
8.2; 8.4 · source: NVD
EL
Enterprise Linux Server Tus · Redhat
8.2; 8.4 · source: NVD
FE
Fedora · Fedoraproject
34 · source: NVD
SS
Sssd · Fedoraproject
2.6.0 · source: NVD
VI
Virtualization · Redhat
4.0 · source: NVD
VH
Virtualization Host · Redhat
4.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3621
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-3621
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1975142
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/05/msg00028.html
Release Notes
https://sssd.io/release-notes/sssd-2.6.0.html
lists.debian.org
https://lists.debian.org/debian-lts-announce/2025/02/msg00008.html
More from Fedora
10.0
CVE-2021-44228
Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints
10.0
CVE-2015-3306
ProFTPD Improper Access Control Vulnerability
9.8
CVE-2024-4577
Argument Injection in PHP-CGI
9.8
CVE-2021-44026
Roundcube Webmail SQL Injection Vulnerability
9.8
CVE-2021-42013
Path Traversal and Remote Code Execution in Apache HTTP Server 2.4.49 and 2.4.50 (incomplete fix of CVE-2021-41773)
