CVE-2022-28655

Arbitrary network connections via unfiltered D-Bus address

Published Jun 4, 2024 · Updated Oct 27, 2024

SSRF in is_closing_session() in Canonical Apport before 2.21.0 allows local users to make arbitrary network connections via D-Bus. The function trusts a crashed process's DBUS_SESSION_BUS_ADDRESS and passes an unfiltered TCP address to gdbus while handling the crash. A low-privilege local user must control the crashed process's environment; Apport then initiates the chosen connection without exposing response data.

CVSS severity7.1
High
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in is_closing_session() in Canonical Apport before 2.21.0 allows local users to make arbitrary network connections via D-Bus. The function trusts a crashed process's DBUS_SESSION_BUS_ADDRESS and passes an unfiltered TCP address to gdbus while handling the crash. A low-privilege local user must control the crashed process's environment; Apport then initiates the chosen connection without exposing response data.

The record

CVE
CVE-2022-28655
Published
Jun 4, 2024
Updated
Oct 27, 2024
Vendor
Canonical
Product
Apport
Classifications
CWE-770
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 4, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 27, 2024Record 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

7.1CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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