HOMEVULNERABILITIESCVE-2022-43995
HIGH

CVE-2022-43995

CWE-125Published: November 2, 2022· Updated: Jun 17, 2026

7.1
CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2022-43995 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), availability disruption (denial of service), with a CVSS base score of 7.1.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Affected Vendors & Products

sudo_project1 product(s)
sudo
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/sudo-project/sudo/commit/bd209b9f16fcd1270c13db27ae3329c677d48050
PATCHhttps://github.com/sudo-project/sudo/commit/bd209b9f16fcd1270c13db27ae3329c677d48050
ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=2139911
ADVISORYhttps://news.ycombinator.com/item?id=33465707
ADVISORYhttps://security.gentoo.org/glsa/202211-08
ADVISORYhttps://www.sudo.ws/security/advisories/
ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=2139911
ADVISORYhttps://news.ycombinator.com/item?id=33465707
ADVISORYhttps://security.gentoo.org/glsa/202211-08
ADVISORYhttps://www.sudo.ws/security/advisories/

All References (10)

→
https://bugzilla.redhat.com/show_bug.cgi?id=2139911Issue Tracking · Third Party Advisory
→
https://github.com/sudo-project/sudo/commit/bd209b9f16fcd1270c13db27ae3329c677d48050Patch · Third Party Advisory
→
https://news.ycombinator.com/item?id=33465707Third Party Advisory
→
https://security.gentoo.org/glsa/202211-08Third Party Advisory
→
https://www.sudo.ws/security/advisories/Vendor Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=2139911Issue Tracking · Third Party Advisory
→
https://github.com/sudo-project/sudo/commit/bd209b9f16fcd1270c13db27ae3329c677d48050Patch · Third Party Advisory
→
https://news.ycombinator.com/item?id=33465707Third Party Advisory
→
https://security.gentoo.org/glsa/202211-08Third Party Advisory
→
https://www.sudo.ws/security/advisories/Vendor Advisory

Quick Facts

CVE IDCVE-2022-43995
CVSS Score7.1 / 10
SeverityHIGH
WeaknessCWE-125
CISA KEVNo
Affected1 vendor(s)
PublishedNov 2, 2022

Related CVEs (CWE-125)

CVE-2021-21777
10.0
CVE-2017-14451
10.0
CVE-2021-41556
10.0
CVE-2013-0767
10.0
CVE-2009-2523
10.0
CVE-2026-34987
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2022-43995 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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