CVE-2021-28089
Tor Directory Protocol CPU Exhaustion Denial of Service
Description
Tor before 0.4.5.7 allows a remote participant in the Tor directory protocol to exhaust CPU resources on a target, aka TROVE-2021-001.
INFO
Published Date :
March 19, 2021, 5:15 a.m.
Last Modified :
Nov. 7, 2023, 3:32 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-2021-28089.
| URL | Resource |
|---|---|
| https://blog.torproject.org/node/2009 | Release Notes Vendor Advisory |
| https://gitlab.torproject.org/tpo/core/tor/-/issues/40304 | Vendor Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HPDXB2GZHG3VNOTWSXQ3QZVHNV76WCU5/ | |
| 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-2021-28089 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-28089 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 [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HPDXB2GZHG3VNOTWSXQ3QZVHNV76WCU5/ [No types assigned] Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/HPDXB2GZHG3VNOTWSXQ3QZVHNV76WCU5/ -
Modified Analysis by [email protected]
May. 16, 2022
Action Type Old Value New Value 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. 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]
Mar. 25, 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/2009 No Types Assigned https://blog.torproject.org/node/2009 Release Notes, Vendor Advisory Changed Reference Type https://gitlab.torproject.org/tpo/core/tor/-/issues/40304 No Types Assigned https://gitlab.torproject.org/tpo/core/tor/-/issues/40304 Vendor Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/HPDXB2GZHG3VNOTWSXQ3QZVHNV76WCU5/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/HPDXB2GZHG3VNOTWSXQ3QZVHNV76WCU5/ Mailing List, Third Party Advisory Added CWE NIST CWE-400 Added CPE Configuration OR *cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* versions up to (excluding) 0.3.5.14 *cpe:2.3:a:torproject:tor:0.4.4.0:alpha:*:*:*:*:*:* *cpe:2.3:a:torproject:tor:0.4.4.1:alpha:*:*:*:*:*:* *cpe:2.3:a:torproject:tor:0.4.4.2:alpha:*:*:*:*:*:* *cpe:2.3:a:torproject:tor:0.4.4.3:alpha:*:*:*:*:*:* *cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* versions from (including) 0.4.4.4 up to (excluding) 0.4.4.8 *cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* versions from (including) 0.4.5.0 up to (excluding) 0.4.5.7 Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Mar. 24, 2021
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/HPDXB2GZHG3VNOTWSXQ3QZVHNV76WCU5/ [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-28089 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-2021-28089
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.23 }} 0.03%
score
0.60699
percentile