CVE-2023-28488 — client

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.

01What is this vulnerability?

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.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-04-12T00:00:00.000Z
• Last modified: 2025-02-08T02:37:47.578Z

09References

• kernel.googlesource.com — https://kernel.googlesource.com/pub/scm/network/connman/connman/+/99e2c16ea1cced…
• github.com — https://github.com/moehw/poc_exploits/tree/master/CVE-2023-28488
• lists.debian.org — https://lists.debian.org/debian-lts-announce/2023/04/msg00024.html
• www.debian.org — https://www.debian.org/security/2023/dsa-5416