CVE-2023-3297 — In Ubuntu's accountsservice an unprivileged local attacker can trigger a use-aft

In Ubuntu's accountsservice an unprivileged local attacker can trigger a use-after-free vulnerability in accountsservice by sending a D-Bus message to the accounts-daemon process.

01What is this vulnerability?

In Ubuntu's accountsservice an unprivileged local attacker can trigger a use-after-free vulnerability in accountsservice by sending a D-Bus message to the accounts-daemon process.

02Affected products

Vendor	Product	Versions
Canonical Ltd.	AccountService	23.13.9-2ubuntu2

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

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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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: 2023-09-01T20:49:43.576Z
• Last modified: 2024-09-30T20:19:08.943Z

09References

• ubuntu.com — https://ubuntu.com/security/notices/USN-6190-1
• securitylab.github.com — https://securitylab.github.com/advisories/GHSL-2023-139_accountsservice/
• bugs.launchpad.net — https://bugs.launchpad.net/ubuntu/+source/accountsservice/+bug/2024182
• cve.mitre.org — https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-3297