CVE-2021-34550
HIGHTor < 0.3.5.15 - Out-of-Bounds Memory Access via v3 Onion Service Descriptor Parsing
Title source: llmDescription
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
References (3)
Core 3
Core References
Broken Link x_refsource_misc
https://gitlab.torproject.org/tpo/core/tor/-/issues/40392
Release Notes, Vendor Advisory x_refsource_confirm
https://blog.torproject.org/node/2041
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/202107-25
Scores
CVSS v3
7.5
EPSS
0.0156
EPSS Percentile
72.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-119
Status
published
Products (1)
torproject/tor
< 0.3.5.15
Published
Jun 29, 2021
Tracked Since
Feb 18, 2026