CVE-2022-43995

Sudo 1.8.0 through 1.9.12, with the crypt() password backend, contains a plugins/sudoers/auth/passwd.c array-out-of-bounds error that can result in a heap-based buffer over-read. This can be triggered by arbitrary local users with access to Sudo by entering a password of seven characters or fewer. The impact could vary depending on the system libraries, compiler, and processor architecture.

Published: 2022-11-02 Last update: 2025-05-05 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-43995 is rated Low Risk (33.8/100): CVSS High severity, with low exploitation likelihood (EPSS 0.06%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2022-43995

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-17 0.04% 0.06% +0.02%
2 2023-03-07 0.89% 0.04% -0.84%
3 2022-11-03 — 0.89% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-43995

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.1 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.2 [email protected]
7.1 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.2 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2022-43995

OS Trackers for CVE-2022-43995

vendor priority summary link
alpine — CVE-2022-43995: 1 source package rows (sudo); 16 state rows across 3 repos (3.22-community, edge-community, edge-main); fixed 0, open 16. https://security.alpinelinux.org/vuln/CVE-2022-43995
debian unimportant CVE-2022-43995 unimportant priority: Debian including 1 source packages (sudo), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 4, open 1. https://security-tracker.debian.org/tracker/CVE-2022-43995
gentoo normal CVE-2022-43995: 1 GLSA(s) (202211-08), 1 atom(s) (app-admin/sudo); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2022-43995
redhat high — https://access.redhat.com/security/cve/CVE-2022-43995
suse high CVE-2022-43995 severity important: SUSE including 282 source package names (1.10.1.16.4.5.328:sudo-1.9.5p2-150300.3.13.1, 11.1-2.2.318:sudo-1.9.5p2-150300.3.13.1, …), 475 product×package rows across 193 product lines (Container ses/7.1/cephcsi/cephcsi, Container ses/7.1/rook/ceph, … (193 product lines)): Fixed 364, Known Affected 110, Known Not Affected 1. https://www.suse.com/security/cve/CVE-2022-43995/
ubuntu medium CVE-2022-43995 medium priority: Ubuntu including 1 source packages (sudo), 7 status rows across 7 suites (bionic, focal, jammy, kinetic, trusty, upstream, xenial): not-affected 6, needs-triage 1. https://ubuntu.com/security/CVE-2022-43995

Affected software / configurations for CVE-2022-43995

Vendor Product Version Raw CPE
sudo_project sudo >= 1.8.0, < 1.9.12 cpe:2.3:a:sudo_project:sudo:*:*:*:*:*:*:*:*
sudo_project sudo 1.9.12 cpe:2.3:a:sudo_project:sudo:1.9.12:-:*:*:*:*:*:*

References for CVE-2022-43995

cvelogic Threat Intelligence