CVE-2023-45842 — Multiple data integrity vulnerabilities exist in the package hash checking funct

Multiple data integrity vulnerabilities exist in the package hash checking functionality of Buildroot 2023.08.1 and Buildroot dev commit 622698d7847. A specially crafted man-in-the-middle attack can lead to arbitrary command execution in the builder.This vulnerability is related

01What is this vulnerability?

Multiple data integrity vulnerabilities exist in the package hash checking functionality of Buildroot 2023.08.1 and Buildroot dev commit 622698d7847. A specially crafted man-in-the-middle attack can lead to arbitrary command execution in the builder.This vulnerability is related to the `mxsldr` package.

02Affected products

Vendor	Product	Versions
Buildroot	Buildroot	2023.08.1, dev commit 622698d7847

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: 2023-12-05T11:30:11.082Z
• Last modified: 2025-11-04T19:25:30.483Z

09References

• talosintelligence.com — https://talosintelligence.com/vulnerability_reports/TALOS-2023-1844
• www.openwall.com — http://www.openwall.com/lists/oss-security/2023/12/11/1