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CVE-2021-34550

nvd nist
Published: Jun 29, 2021Modified: Jun 17, 2026

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7.5
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitability: 3.9 / Impact: 3.6
Source: NVD

Description

An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-006. The v3 onion service descriptor parsing allows out-of-bounds memory access, and a client crash, via a crafted onion service descriptor

Affected (4)

Products: Torproject: Tor
Torproject
1 product
Tor
Configuration A
4 vulnerable
Vulnerable SoftwareAffected Versions
Torproject
Tor
Before 0.3.5.15
Tor
From 0.4.0.0 to 0.4.4.9
Tor
From 0.4.5.0 to 0.4.5.9
Tor
From 0.4.6.0 to 0.4.6.5

Related CWEs

CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

References (6)

Source: cve@mitre.org
Release NotesVendor Advisory
Source: cve@mitre.org
Broken Link
Source: cve@mitre.org
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Release NotesVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory

Timeline

No history available yet.