CVE-2015-2689 — Improper Input Validation in TOR

CWE-20 — Improper Input Validation6 documents6 sources
Severity
7.5HIGHNVD
EPSS
0.6%
top 29.17%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Torproject TORTHE TOR Project TOR
Timeline
PublishedJan 24
Latest updateMay 24

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages3 packages

▶NVDtorproject/tor0.2.5.1 — 0.2.5.11+1
▶Debiantorproject/tor< 0.2.5.11-1+3
▶CVEListV5the_tor_project/tor0.2.5.x before 0.2.5.11, before 0.2.4.26+1

Patches

Patch: trac.torproject.org ↗Patch: trac.torproject.org ↗

🔴Vulnerability Details

3
GHSA
GHSA-7r2c-ch3m-w27x: Tor before 0↗2022-05-24
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CVEList
CVE-2015-2689: Tor before 0↗2020-01-24
▶
OSV
CVE-2015-2689: Tor before 0↗2020-01-24
▶

📋Vendor Advisories

1
Debian
CVE-2015-2689: tor - Tor before 0.2.4.26 and 0.2.5.x before 0.2.5.11 does not properly handle pending...↗2015
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💬Community

1
Bugzilla
CVE-2015-2688 CVE-2015-2689 tor: security fixes in 0.2.4.26 and 0.2.5.11↗2015-03-23
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CVE-2015-2689 — Improper Input Validation in TOR | cvebase