Vulnerability Report

CVE-2021-23239

Title: Sudo sudoedit Race Condition for Directory-Existence Tests

Privilege Escalation

Proof Of Concept

No public PoC currently indexed for CVE-2021-23239.

CWE Category CWE-59
Published Date Jan 12, 2021
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 2.5 CVSS v3.1
Exploit Probability (EPSS)
1.03%

Vulnerability Summary

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.

Impacted Vendors

S
sudo_project 1
N
netapp 3
G
gratisoft 1
T
todd_miller 1

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%40lists.fedoraproject.org/message/EE42Y35SMJOLONAIBNYNFC7J44UUZ2Y6/ https://lists.fedoraproject.org/archives/list/package-announce%40lists.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://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%40lists.fedoraproject.org/message/EE42Y35SMJOLONAIBNYNFC7J44UUZ2Y6/ https://lists.fedoraproject.org/archives/list/package-announce%40lists.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
CVSS v3.1
Source Entity [email protected]
Severity LOW
2.5
Attack Vector
LOCAL
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS v2.0
Source Entity [email protected]
Severity LOW
1.9
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:L/AC:M/Au:N/C:P/I:N/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2021-23239 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector LOCAL
Complexity HIGH
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

Affected Stack

No specific products linked.