CVE-2015-2689
7.5
HIGH
CVSS 3.1
EPSS 0.45%
Description
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 crafted packets.
How to fix CVE-2015-2689
To remediate CVE-2015-2689, upgrade the affected package to a fixed version below.
- Debian/tor—upgrade to 0.2.5.11-1 or later
Is CVE-2015-2689 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 0.2.5.11-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |