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2.5
CVSSv3

CVE-2021-23239

Published: 12/01/2021 Updated: 09/11/2022
CVSS v2 Base Score: 1.9 | Impact Score: 2.9 | Exploitability Score: 3.4
CVSS v3 Base Score: 2.5 | Impact Score: 1.4 | Exploitability Score: 1
Vector: AV:L/AC:M/Au:N/C:P/I:N/A:N
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Vulnerability Summary

The sudoedit personality of Sudo prior to 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.

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Vendor Advisories

Arch Linux Advisories: [ASA-202101-25] sudo: information disclosure
Arch Linux Security Advisory ASA-202101-25 ========================================== Severity: Low Date : 2021-01-20 CVE-ID : CVE-2021-23239 Package : sudo Type : information disclosure Remote : No Link : securityarchlinuxorg/AVG-1431 Summary ======= The package sudo before version 195-1 is vulnerable to information discl ...
Arch Linux Issues:
A security issue was found in sudo before version 195 A race condition in sudoedit could have allowed an attacker to test for the existence of directories in arbitrary locations in the file system ...

Mailing Lists

Full Disclosure: Various security fixes in sudo 1.9.5 (CVE-2021-23239, CVE-2021-23240)
Hello list, concerns have been raised with us about half a year ago that new features like the python plugin in sudo [1] major version 19 could have introduced new security issues Recently I performed a review of the current sudo code base and found a couple of minor and moderate issues (not necessarily in the new features) that will be addresse ...

Github Repositories

CVE-2021-23239 The sudoedit personality of Sudo before 195 may allow a local unprivileged user to perform arbitrary directory-existence tests by winning a sudo_editc race condition in replacing a user-controlled directory by a symlink to an arbitrary path authentication complexity vector NONE MEDIUM LOCAL confidentiality integrity availability PARTIAL NONE

References

CWE-59https://www.sudo.ws/stable.html#1.9.5https://bugzilla.suse.com/show_bug.cgi?id=CVE-2021-23239https://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/202101-33https://security.netapp.com/advisory/ntap-20210129-0010/https://lists.debian.org/debian-lts-announce/2022/11/msg00007.htmlhttps://github.com/Live-Hack-CVE/CVE-2021-23239https://nvd.nist.govhttps://security.archlinux.org/ASA-202101-25https://security.archlinux.org/CVE-2021-23239
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