CVE-2021-23239
LOWCVSS 2.5/10EPSS 1.03%
Last modified
CVE-2021-23239 is a low-severity vulnerability rated 2.5/10 on the CVSS scale. The sudoedit personality of Sudo before 1.9.5 may allow a local unprivileged user to perform arbitrary directory-existence tests by winning a sudo_edit.c race condition in replacing a user-controlled directory by a symlink to an arbitrary path.. EPSS estimates a 1.03% chance of exploitation in the next 30 days.
Description
The sudoedit personality of Sudo before 1.9.5 may allow a local unprivileged user to perform arbitrary directory-existence tests by winning a sudo_edit.c race condition in replacing a user-controlled directory by a symlink to an arbitrary path.
Metrics
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Sudo Project | Sudo | < 1.8.32 |
| Sudo Project | Sudo | >= 1.9.0, < 1.9.5 |
| Netapp | Cloud Backup | All versions |
| Netapp | Hci Management Node | All versions |
| Netapp | Solidfire | All versions |
| Fedoraproject | Fedora | 32 |
| Fedoraproject | Fedora | 33 |
| Debian | Debian Linux | 10.0 |
References
- https://bugzilla.suse.com/show_bug.cgi?id=CVE-2021-23239Exploit, Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00007.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202101-33Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210129-0010/Third Party Advisory
- https://www.sudo.ws/stable.html#1.9.5Release Notes, Vendor Advisory
- https://bugzilla.suse.com/show_bug.cgi?id=CVE-2021-23239Exploit, Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00007.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202101-33Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210129-0010/Third Party Advisory
- https://www.sudo.ws/stable.html#1.9.5Release Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-23239?
The sudoedit personality of Sudo before 1.9.5 may allow a local unprivileged user to perform arbitrary directory-existence tests by winning a sudo_edit.c race condition in replacing a user-controlled directory by a symlink to an arbitrary path.
How severe is CVE-2021-23239?
CVE-2021-23239 has a CVSS score of 2.5/10 (LOW severity). The EPSS model estimates a 1.03% probability of exploitation in the next 30 days.
How do I fix CVE-2021-23239?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
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.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-23239?
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Scan your code nowSource: NVD / NIST