An issue was discovered in Tor before 0.2.9.15, 0.3.1.x before 0.3.1.10, and 0.3.2.x before 0.3.2.10. The directory-authority protocol-list subprotocol implementation allows remote attackers to cause a denial of service (NULL pointer dereference and directory-authority crash) via a misformatted relay descriptor that is mishandled during voting. References: https://trac.torproject.org/projects/tor/ticket/25074 https://lists.torproject.org/pipermail/tor-announce/2018-March/000152.html https://blog.torproject.org/new-stable-tor-releases-security-fixes-and-dos-prevention-03210-03110-02915
Created tor tracking bugs for this issue: Affects: epel-6 [bug 1553356]