Source: 389-ds-base Version: 3.3.1-3 X-Debbugs-CC: [email protected] Severity: important Tags: security upstream
Hi, The following vulnerability was published for 389-ds-base. CVE-2026-86344[0]: | A flaw was found in 389-ds-base. An unauthenticated remote attacker | can send a complete LDAP operation followed by the first bytes of an | incomplete LDAPMessage on the same connection, causing the server to | hand that connection to a second worker thread before the first | worker's result is flushed. The second worker blocks until nsslapd- | ioblocktimeout while holding the connection mutex, preventing | delivery of the completed operation's result. Repeating this across | a small number of connections proportional to the configured worker- | thread pool size exhausts the entire pool under default | configuration, denying service to all clients (anonymous and | authenticated, plaintext and TLS) for as long as the attacker | maintains the connections. This one is odd, the Red Hat bugzilla entry just contains a hash sum, which I guess is to identify the internal embargoed tracking? Is this something tracked/known upstream already? If you fix the vulnerability please also make sure to include the CVE (Common Vulnerabilities & Exposures) id in your changelog entry. For further information see: [0] https://security-tracker.debian.org/tracker/CVE-2026-86344 https://www.cve.org/CVERecord?id=CVE-2026-86344 [1] https://bugzilla.redhat.com/show_bug.cgi?id=2529329 Please adjust the affected versions in the BTS as needed. Regards, Salvatore
