Advisories ยป MGASA-2021-0293

Updated tor package fixes security vulnerabilities

Publication date: 28 Jun 2021
Type: security
Affected Mageia releases : 7 , 8
CVE: CVE-2021-34548 , CVE-2021-34549 , CVE-2021-34550


Don't allow relays to spoof RELAY_END or RELAY_RESOLVED cell on half-closed
streams. Previously, clients failed to validate which hop sent these cells:
this would allow a relay on a circuit to end a stream that wasn't actually
built with it (CVE-2021-34548).

hashtable-based CPU denial-of-service attack against relays (CVE-2021-34549). 

out-of-bounds memory access in v3 onion service descriptor parsing

See also upstream release notes for included other bugfixes.

This package also fixes an error in tor package's un-install script (mga#29158).