What is CVE-2015-2689?

CVE-2015-2689 is a high-severity vulnerability in The Tor Project, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2020-01-24.

How severe is CVE-2015-2689?

High severity. CVSS v3 base score is 7.5 out of 10.

Improper input validation in The Tor Project

CVE-2015-2689

Tor before 0.2.4.26 and 0.2.5.x before 0.2.5.11 does not properly handle pending-connection resolve states during periods of high DNS load, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) via…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.022 (80.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

The Tor Project — versions before 0.2.4.26, 0.2.5.x before 0.2.5.11
Torproject Tor

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

security@debian.org (Mailing List, x_refsource_MISC, Vendor Advisory)
security@debian.org (Patch, x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2015-2689?: CVE-2015-2689 is a high-severity vulnerability in The Tor Project, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2020-01-24.
How severe is CVE-2015-2689?: High severity. CVSS v3 base score is 7.5 out of 10.