RCE in Fedoraproject Fedora
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. This flaw allows an attacker to trick the root user into running a specially crafted sssctl comma…
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.025 (82.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Fedoraproject Fedora — versions 34
- Fedoraproject Sssd — versions 2.6.0
- Redhat Enterprise_linux — versions 6.0, 7.0, 8.0
- Redhat Enterprise_linux_eus — versions 8.1, 8.2
- Redhat Enterprise_linux_server_aus — versions 8.2, 8.4
- Redhat Enterprise_linux_server_tus — versions 8.2, 8.4
- Redhat Virtualization — versions 4.0
- Redhat Virtualization_host — versions 4.0
- N/a Sssd — versions sssd 2.6.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Third Party Advisory, Release Notes)
- secalert@redhat.com (Patch, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (mailing-list, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2021-3621?
- CVE-2021-3621 is a high-severity vulnerability in Fedoraproject Fedora, classified under Command Injection. CVSS score: 8.8/10. Published 2021-12-23.
- How severe is CVE-2021-3621?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2021-3621 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.