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Fencer Vulns
critical 9.1

CVE-2022-23096 json

An issue was discovered in the DNS proxy in Connman through 1.40.

published 2022-01-28 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-28201

cvss
9.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.6%
EPSS 2.6% chance of exploitation in 30 days, percentile 85%
public exploits
0
none known

Summary

An issue was discovered in the DNS proxy in Connman through 1.40. The TCP server reply implementation lacks a check for the presence of sufficient Header Data, leading to an out-of-bounds read.

Patch / fix

  • connman Debian 14, Debian 13, Debian 12 1.36-2.4

debian advisories DEBIAN-CVE-2022-23096

  • connman Ubuntu 20.04 LTS 1.36-2ubuntu0.1
  • connman Ubuntu 22.04 LTS 1.36-2.3ubuntu0.1
  • connman Ubuntu Pro 16.04 LTS 1.21-1.2+deb8u1ubuntu0.1~esm1
  • connman Ubuntu Pro 18.04 LTS 1.35-6ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2022-23096

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • connman Alpine 3.24, Alpine 3.23, Alpine 3.22 +6 more 1.41-r0

alpine advisories ALPINE-CVE-2022-23096

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

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-2022-23096 updated

connman: Multiple vulnerabilities in connman's dnsproxy component

  • Red Hat All currently supported Red Hat products
    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
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

2.60% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • openwall.com https://www.openwall.com/lists/oss-security/2022/01/25/1 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
NVD 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CNA 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
NVD 2.0 6.4 AV:N/AC:L/Au:N/C:P/I:N/A:P

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.