CVE-2021-23239: Race Condition
First published: Tue Jan 12 2021(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Sudo Project Sudo | <1.8.32 | |
| Sudo Project Sudo | >=1.9.0<1.9.5 | |
| Netapp Cloud Backup | ||
| Netapp Hci Management Node | ||
| Netapp Solidfire | ||
| Fedoraproject Fedora | =32 | |
| Fedoraproject Fedora | =33 | |
| Debian Debian Linux | =10.0 |
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Reference Links
- https://bugzilla.suse.com/show_bug.cgi?id=CVE-2021-23239
- https://lists.debian.org/debian-lts-announce/2022/11/msg00007.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EE42Y35SMJOLONAIBNYNFC7J44UUZ2Y6/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GMY4VSSBIND7VAYSN6T7XIWJRWG4GBB3/
- https://security.gentoo.org/glsa/202101-33
- https://security.netapp.com/advisory/ntap-20210129-0010/
- https://www.sudo.ws/stable.html#1.9.5
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EE42Y35SMJOLONAIBNYNFC7J44UUZ2Y6/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GMY4VSSBIND7VAYSN6T7XIWJRWG4GBB3/
Frequently Asked Questions
What is CVE-2021-23239?
CVE-2021-23239 is a vulnerability in the sudoedit personality of Sudo before version 1.9.5 that may allow a local unprivileged user to perform arbitrary directory-existence tests.
How does CVE-2021-23239 affect Sudo?
CVE-2021-23239 affects Sudo versions before 1.9.5.
What is the severity of CVE-2021-23239?
CVE-2021-23239 has a severity level of Low with a score of 2.5.
Which software are affected by CVE-2021-23239?
Sudo versions before 1.9.5, Netapp Cloud Backup, Netapp Hci Management Node, Netapp Solidfire, Fedora 32, Fedora 33, Debian Linux 10.0 are affected by CVE-2021-23239.
How can the CVE-2021-23239 vulnerability be mitigated?
To mitigate the CVE-2021-23239 vulnerability, users should update their Sudo installations to version 1.9.5 or later.
- collector/nvd-index
- agent/event
- agent/severity
- agent/weakness
- agent/references
- agent/author
- agent/type
- agent/description
- agent/last-modified-date
- agent/softwarecombine
- agent/first-publish-date
- agent/tags
- collector/mitre-cve
- source/MITRE
- vendor/sudo project
- canonical/sudo project sudo
- version/sudo project sudo/1.9.0
- vendor/netapp
- canonical/netapp cloud backup
- canonical/netapp hci management node
- canonical/netapp solidfire
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/32
- version/fedoraproject fedora/33
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/10.0