CVE-2021-3621
Last modified
CVE-2021-3621 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. EPSS estimates a 2.52% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Fedoraproject | Sssd | 2.6.0 |
| Redhat | Virtualization | 4.0 |
| Redhat | Virtualization Host | 4.0 |
| Redhat | Enterprise Linux | 6.0 |
| Redhat | Enterprise Linux | 7.0 |
| Redhat | Enterprise Linux | 8.0 |
| Redhat | Enterprise Linux Eus | 8.1 |
| Redhat | Enterprise Linux Eus | 8.2 |
| Redhat | Enterprise Linux Server Aus | 8.2 |
| Redhat | Enterprise Linux Server Aus | 8.4 |
| Redhat | Enterprise Linux Server Tus | 8.2 |
| Redhat | Enterprise Linux Server Tus | 8.4 |
| Fedoraproject | Fedora | 34 |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1975142Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/05/msg00028.htmlThird Party Advisory
- https://sssd.io/release-notes/sssd-2.6.0.htmlRelease Notes, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1975142Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/05/msg00028.htmlThird Party Advisory
- https://sssd.io/release-notes/sssd-2.6.0.htmlRelease Notes, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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