CVE-2023-42456 — Sudo-rs, a memory safe implementation of sudo and su, allows users to not have t

Sudo-rs, a memory safe implementation of sudo and su, allows users to not have to enter authentication at every sudo attempt, but instead only requiring authentication every once in a while in every terminal or process group. Only once a configurable timeout has passed will the u

01What is this vulnerability?

Sudo-rs, a memory safe implementation of sudo and su, allows users to not have to enter authentication at every sudo attempt, but instead only requiring authentication every once in a while in every terminal or process group. Only once a configurable timeout has passed will the user have to re-authenticate themselves. Supporting this functionality is a set of session files (timestamps) for each…

02Affected products

No structured affected-product list available — see references below for vendor advisories.

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: 2023-09-21T16:15:09.980
• Last modified: 2026-06-10T15:16:29.280

09References

• github.com — https://github.com/memorysafety/sudo-rs/commit/bfdbda22968e3de43fa8246cab1681cfd…
• github.com — https://github.com/trifectatechfoundation/sudo-rs/security/advisories/GHSA-2r3c-…
• www.openwall.com — http://www.openwall.com/lists/oss-security/2023/11/02/1
• ferrous-systems.com — https://ferrous-systems.com/blog/sudo-rs-audit/
• github.com — https://github.com/memorysafety/sudo-rs/commit/bfdbda22968e3de43fa8246cab1681cfd…
• github.com — https://github.com/memorysafety/sudo-rs/security/advisories/GHSA-2r3c-m6v7-9354