CVE-2021-34548
Tor Relay Endstream Bypass
Description
An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-003. An attacker can forge RELAY_END or RELAY_RESOLVED to bypass the intended access control for ending a stream.
INFO
Published Date :
June 29, 2021, 11:15 a.m.
Last Modified :
Nov. 21, 2024, 6:10 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-34548.
| URL | Resource |
|---|---|
| http://packetstormsecurity.com/files/163510/Tor-Half-Closed-Connection-Stream-Confusion.html | Third Party Advisory VDB Entry |
| https://blog.torproject.org/node/2041 | Release Notes Vendor Advisory |
| https://gitlab.torproject.org/tpo/core/tor/-/issues/40389 | Broken Link |
| https://security.gentoo.org/glsa/202107-25 | Third Party Advisory |
| http://packetstormsecurity.com/files/163510/Tor-Half-Closed-Connection-Stream-Confusion.html | Third Party Advisory VDB Entry |
| https://blog.torproject.org/node/2041 | Release Notes Vendor Advisory |
| https://gitlab.torproject.org/tpo/core/tor/-/issues/40389 | Broken Link |
| https://security.gentoo.org/glsa/202107-25 | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-34548 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-34548 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/163510/Tor-Half-Closed-Connection-Stream-Confusion.html Added Reference https://blog.torproject.org/node/2041 Added Reference https://gitlab.torproject.org/tpo/core/tor/-/issues/40389 Added Reference https://security.gentoo.org/glsa/202107-25 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CWE Remap by [email protected]
Aug. 08, 2023
Action Type Old Value New Value Changed CWE CWE-863 CWE-290 -
Modified Analysis by [email protected]
Sep. 14, 2021
Action Type Old Value New Value Changed Reference Type http://packetstormsecurity.com/files/163510/Tor-Half-Closed-Connection-Stream-Confusion.html No Types Assigned http://packetstormsecurity.com/files/163510/Tor-Half-Closed-Connection-Stream-Confusion.html Third Party Advisory, VDB Entry Changed Reference Type https://security.gentoo.org/glsa/202107-25 No Types Assigned https://security.gentoo.org/glsa/202107-25 Third Party Advisory -
CVE Modified by [email protected]
Jul. 15, 2021
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/163510/Tor-Half-Closed-Connection-Stream-Confusion.html [No Types Assigned] -
CVE Modified by [email protected]
Jul. 10, 2021
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202107-25 [No Types Assigned] -
Initial Analysis by [email protected]
Jul. 06, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://blog.torproject.org/node/2041 No Types Assigned https://blog.torproject.org/node/2041 Release Notes, Vendor Advisory Changed Reference Type https://gitlab.torproject.org/tpo/core/tor/-/issues/40389 No Types Assigned https://gitlab.torproject.org/tpo/core/tor/-/issues/40389 Broken Link Added CWE NIST CWE-863 Added CPE Configuration OR *cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* versions up to (excluding) 0.3.5.15 *cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* versions from (including) 0.4.0.0 up to (excluding) 0.4.4.9 *cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* versions from (including) 0.4.5.0 up to (excluding) 0.4.5.9 *cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* versions from (including) 0.4.6.0 up to (excluding) 0.4.6.5
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-34548 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-34548
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
1.10 }} 0.37%
score
0.84198
percentile