CVE-2023-5055 — Possible variant of CVE-2021-3434 in function le_ecred_reconf_req

Possible variant of CVE-2021-3434 in function le_ecred_reconf_req.

01What is this vulnerability?

Possible variant of CVE-2021-3434 in function le_ecred_reconf_req.

02Affected products

Vendor	Product	Versions
zephyrproject-rtos	Zephyr	*

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

08Timeline

• Published: 2023-11-21T18:05:10.824Z
• Last modified: 2024-08-02T07:44:53.707Z

09References

• github.com — https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-wr8r-7f8x-…