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Fencer Vulns
medium 6.5

CVE-2023-28488 json

client.c in gdhcp in ConnMan through 1.41 could be used by network-adjacent attackers (operating a crafted DHCP server) to cause a stack-ba…

published 2023-04-12 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-32158

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 61%
public exploits
0
none known

Summary

client.c in gdhcp in ConnMan through 1.41 could be used by network-adjacent attackers (operating a crafted DHCP server) to cause a stack-based buffer overflow and denial of service, terminating the connman process.

Patch / fix

  • connman Debian 14, Debian 13, Debian 12 1.41-3

debian advisories DEBIAN-CVE-2023-28488

  • 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-2023-28488

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 openSUSE Tumbleweed 1.42-1.1
  • connman Package Hub 15 SP4, openSUSE Leap 15.4 1.42-bp154.2.6.1
  • connman Package Hub 15 SP5, openSUSE Leap 15.5 1.42-bp155.4.3.1

opensuse advisories openSUSE-SU-2024:13420-1openSUSE-SU-2023:0370-1openSUSE-SU-2023:0369-1

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-2023-28488 updated cvss 5.3

connman: stack-based buffer overflow in client.c

  • 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
no
Technical impact
partial
Assessed
20 mo ago

Exploit prediction

0.96% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/moehw/poc_exploits/tree/master/CVE-2023-28488 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/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.