CVE-2022-1242Public exploit

Local root-context socket connections via namespace-controlled path

Published Jun 3, 2024 · Updated Mar 27, 2025

Improper input validation in Canonical Apport before 2.21.0 allows local users to make root connect to arbitrary Unix sockets. When forwarding container crashes, the handler trusts /proc//root/run/apport.socket even though user and mount namespaces let the crashing user control that path and redirect it with a symlink. Exploitation requires a local account able to create user and mount namespaces and can route root-originated crash data to a chosen service, expose protected dumps, or trigger privileged processes.

CVSS severity7.8
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Canonical Apport before 2.21.0 allows local users to make root connect to arbitrary Unix sockets. When forwarding container crashes, the handler trusts /proc//root/run/apport.socket even though user and mount namespaces let the crashing user control that path and redirect it with a symlink. Exploitation requires a local account able to create user and mount namespaces and can route root-originated crash data to a chosen service, expose protected dumps, or trigger privileged processes.

The record

CVE
CVE-2022-1242
Published
Jun 3, 2024
Updated
Mar 27, 2025
Vendor
Canonical
Product
Apport
Classifications
CWE-20, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 27, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2.21.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Canonical · Apportversion=0 <2.21.0

Published CVSS scores

7.8CanonicalCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
T1068Exploitation for Privilege Escalation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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