CVE-2015-2689 describes a denial-of-service vulnerability affecting Tor versions before 0.2.4.26 and 0.2.5.x before 0.2.5.11. This flaw allows remote attackers to trigger an assertion failure and daemon exit by sending crafted packets during periods of high DNS load, due to improper handling of pending-connection resolve states. Rated with a CVSS score of 7.5 (HIGH), the vulnerability is easily exploitable over the network with low attack complexity, leading to a complete loss of availability. There is no evidence of active exploitation, nor are there publicly available exploit tools or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 0.2.4.26CPE matchmatch criteria | cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* | ||
>= 0.2.5.1, < 0.2.5.11CPE matchmatch criteria | cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.