CVE-2018-0490

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.

• CWE-476

• https://blog.torproject.org/new-stable-tor-releases-security-fixes-and-dos-prevention-03210-03110-02915Vendor Advisory
• https://trac.torproject.org/projects/tor/ticket/25074Vendor Advisory
• https://www.debian.org/security/2018/dsa-4183Third Party Advisory
• https://blog.torproject.org/new-stable-tor-releases-security-fixes-and-dos-prevention-03210-03110-02915Vendor Advisory
• https://trac.torproject.org/projects/tor/ticket/25074Vendor Advisory
• https://www.debian.org/security/2018/dsa-4183Third Party Advisory

Published

Mar 5, 2018

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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