Vulnerability Details : CVE-2021-23240
selinux_edit_copy_tfiles in sudoedit in Sudo before 1.9.5 allows a local unprivileged user to gain file ownership and escalate privileges by replacing a temporary file with a symlink to an arbitrary file target. This affects SELinux RBAC support in permissive mode. Machines without SELinux are not vulnerable.
Products affected by CVE-2021-23240
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*
- cpe:2.3:a:sudo_project:sudo:*:*:*:*:*:*:*:*
- cpe:2.3:a:sudo_project:sudo:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-23240
0.10%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 40 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-23240
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.4
|
MEDIUM | AV:L/AC:M/Au:N/C:P/I:P/A:P |
3.4
|
6.4
|
NIST | |
|
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2021-23240
-
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-23240
-
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E
Mailing List;Third Party Advisory
-
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2021-23240
Bug 1180685 – VUL-0: CVE-2021-23240: sudo: Possible Symlink Attack in SELinux Context in `sudoedit`Exploit;Issue Tracking;Patch;Third Party Advisory
-
https://www.sudo.ws/stable.html#1.9.5
Sudo Stable ReleaseRelease Notes;Vendor Advisory
-
https://security.netapp.com/advisory/ntap-20210129-0010/
January 2021 Sudo Vulnerabilities in NetApp Products | NetApp Product SecurityThird Party Advisory
-
https://security.gentoo.org/glsa/202101-33
sudo: Multiple vulnerabilities (GLSA 202101-33) — Gentoo securityThird Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EE42Y35SMJOLONAIBNYNFC7J44UUZ2Y6/
[SECURITY] Fedora 33 Update: sudo-1.9.5p1-1.fc33 - package-announce - Fedora Mailing-ListsThird Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GMY4VSSBIND7VAYSN6T7XIWJRWG4GBB3/
[SECURITY] Fedora 32 Update: sudo-1.9.5p1-1.fc32 - package-announce - Fedora Mailing-ListsThird Party Advisory
-
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E
[GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8 - Pony MailMailing List;Third Party Advisory
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