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NVD / CVE Program· CNA mitre

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 re

Noroxi assessment

Priority: Monitor (action score 28/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.29% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: sudo (Alpine:v3.14) 1.9.12-r1; sudo (Debian:12) 1.9.12p1-1; sudo (openSUSE:Leap 15.4) 1.9.9-150400.4.6.1.

Low priority for now. Upgrade to sudo (Alpine:v3.14) 1.9.12-r1; sudo (Debian:12) 1.9.12p1-1; sudo (openSUSE:Leap 15.4) 1.9.9-150400.4.6.1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

HighCVSS 7.1 · v3.1—No exploit Fix available
Published
Nov 2, 2022
Updated
Jun 17, 2026
EPSS
0.2% · 22th percentile

Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2022-43995

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
sudo projectsudo

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • sudo project sudo1.8.0 and later · before 1.9.12
  • sudo project sudo1.9.12

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Alpine:v3.14sudofrom 1.8.0 · before 1.9.12-r11.9.12-r1
Debian:12sudobefore 1.9.12p1-11.9.12p1-1
openSUSE:Leap 15.4sudobefore 1.9.9-150400.4.6.11.9.9-150400.4.6.1
openSUSE:Leap Micro 5.2sudobefore 1.9.5p2-150300.3.13.11.9.5p2-150300.3.13.1
openSUSE:Tumbleweedsudobefore 1.9.12-3.11.9.12-3.1
SUSE:Linux Enterprise High Performance Computing 15-ESPOSsudobefore 1.8.27-150000.4.30.11.8.27-150000.4.30.1
SUSE:Linux Enterprise Micro 5.3sudobefore 1.9.9-150400.4.6.11.9.9-150400.4.6.1
SUSE:Linux Enterprise Module for Basesystem 15 SP3sudobefore 1.9.5p2-150300.3.13.11.9.5p2-150300.3.13.1
SUSE:Linux Enterprise Server 12 SP2-BCLsudobefore 1.8.10p3-10.38.11.8.10p3-10.38.1
SUSE:Linux Enterprise Software Development Kit 12 SP5sudobefore 1.8.27-4.30.11.8.27-4.30.1
SUSE:OpenStack Cloud 9sudobefore 1.8.20p2-3.33.11.8.20p2-3.33.1

Same product

sudo project: all records

Other highest-scoring records for the same primary product.

  • CVE-2021-3156Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root KEV
    91Now
  • CVE-2025-32463Sudo before 1.9.17p1 allows local users to obtain root access because /etc/nsswitch.conf from a user-controlled directory is used with the -KEV
    78This week
  • CVE-2019-14287In Sudo before 1.8.28, an attacker with access to a Runas ALL sudoer account can bypass certain policy blacklists and session PAM modules, a
    54Plan

Published before and after this one in the same product

  • ← EarlierCVE-2021-23239Jan 12, 2021 · The sudoedit personality of Sudo before 1.9.5 may allow a local unprivileged user to perform arbitrary directory-existence tests by winning
    10Monitor
  • ← EarlierCVE-2021-23240Jan 12, 2021 · selinux_edit_copy_tfiles in sudoedit in Sudo before 1.9.5 allows a local unprivileged user to gain file ownership and escalate privileges by
    31Monitor
  • Later →CVE-2023-22809Jan 18, 2023 · In Sudo before 1.9.12p2, the sudoedit (aka -e) feature mishandles extra arguments passed in the user-provided environment variables (SUDO_ED
    48Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
alpine:sudo1.9.12-r1 · Alpine:v3.14Package registry (OSV)
debian:sudo1.9.12p1-1 · Debian:12Package registry (OSV)
opensuse:sudo1.9.9-150400.4.6.1 · openSUSE:Leap 15.4Package registry (OSV)
suse:sudo1.8.10p3-10.38.1 · SUSE:Linux Enterprise Server 12 SP2-BCLPackage registry (OSV)
suse:sudo1.9.9-150400.4.6.1 · SUSE:Linux Enterprise Micro 5.3Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-125 · Out-of-bounds Read

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (4 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records