NULL pointer dereference in Torproject Tor
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.026 (85.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.026 · newest: 0.026 · change: 0.000
Affected products
- Torproject Tor — versions 0.3.1.1, 0.3.1.2, 0.3.1.3
- Debian Linux — versions 9.0
- Tor — versions Tor
Weakness classification (CWE)
References
- trac.torproject.org/projects/tor/ticket/25074 (Vendor Advisory)
- www.debian.org/security/2018/dsa-4183 (vendor-advisory, Third Party Advisory)
- blog.torproject.org/new-stable-tor-releases-security-fixes-and-dos-prevention-0… (Vendor Advisory)
Frequently asked questions
- What is CVE-2018-0490?
- CVE-2018-0490 is a high-severity vulnerability in Torproject Tor, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2018-03-05.
- How severe is CVE-2018-0490?
- High severity. CVSS v3 base score is 7.5 out of 10.