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Fencer Vulns
high 7.1

CVE-2022-43995 json

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 r…

published 2022-11-02 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-46959

cvss
7.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 22%
public exploits
0
none known

Summary

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.

Patch / fix

  • sudo_project sudo 1.9.12
  • sudo Debian 14, Debian 13, Debian 12 1.9.12p1-1

debian advisories DEBIAN-CVE-2022-43995

  • sudo SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 1.8.27-4.30.1
  • sudo SLES for SAP 12 SP4, SLES 12 SP4-LTSS, SLES 12 SP3-BCL +2 more 1.8.20p2-3.33.1
  • sudo SLE Module for Basesystem 15 SP3, SLE Micro 5.2, SLE Micro 5.1 +2 more 1.9.5p2-150300.3.13.1
  • sudo SLE Module for Basesystem 15 SP4, SLE Micro 5.3, openSUSE Leap 15.4 1.9.9-150400.4.6.1
  • sudo SLES for SAP 15 SP2, SLES for SAP 15 SP1, SLES for SAP 15 +16 more 1.8.27-150000.4.30.1
  • sudo SLES 12 SP2-BCL 1.8.10p3-10.38.1

suse advisories SUSE-SU-2022:4280-1SUSE-SU-2022:4240-1SUSE-SU-2022:4077-1SUSE-SU-2022:4001-1SUSE-SU-2022:3938-1SUSE-SU-2022:3886-1

  • sudo openSUSE Tumbleweed 1.9.12-3.1

opensuse advisories openSUSE-SU-2024:12483-1

  • sudo Alpine 3.15, Alpine 3.14 1.9.12-r1

alpine advisories ALPINE-CVE-2022-43995

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • sudo CBL-Mariner 2.0 1.9.12p1-1

azure linux advisories AZL-11400

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-43995 updated cvss 7.1

sudo: heap-based overflow with very small passwords

  • Red Hat Enterprise Linux 6 sudo Red Hat Enterprise Linux 7 sudo Red Hat Enterprise Linux 8 sudo Red Hat Enterprise Linux 9 sudo, sudo-python-plugin
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
18 mo ago

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
NVD 3.1 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CNA 3.1 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.