CVE-2021-28089

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Tor versiones anteriores a 0.4.5.7, permite a un participante remoto en el protocolo de directorio de Tor agotar los recursos de la CPU en un objetivo, también se conoce como TROVE-2021-001

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-03-08 CVE Reserved
2021-03-19 CVE Published
2023-12-03 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-400: Uncontrolled Resource Consumption

CAPEC

References (4)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://blog.torproject.org/node/2009	2023-11-07
https://gitlab.torproject.org/tpo/core/tor/-/issues/40304	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HPDXB2GZHG3VNOTWSXQ3QZVHNV76WCU5	2023-11-07
https://security.gentoo.org/glsa/202107-25	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Torproject Search vendor "Torproject"		Tor Search vendor "Torproject" for product "Tor"				< 0.3.5.14 Search vendor "Torproject" for product "Tor" and version " < 0.3.5.14"		-		Affected
Torproject Search vendor "Torproject"		Tor Search vendor "Torproject" for product "Tor"				>= 0.4.4.4 < 0.4.4.8 Search vendor "Torproject" for product "Tor" and version " >= 0.4.4.4 < 0.4.4.8"		-		Affected
Torproject Search vendor "Torproject"		Tor Search vendor "Torproject" for product "Tor"				>= 0.4.5.0 < 0.4.5.7 Search vendor "Torproject" for product "Tor" and version " >= 0.4.5.0 < 0.4.5.7"		-		Affected
Torproject Search vendor "Torproject"		Tor Search vendor "Torproject" for product "Tor"				0.4.4.0 Search vendor "Torproject" for product "Tor" and version "0.4.4.0"		alpha		Affected
Torproject Search vendor "Torproject"		Tor Search vendor "Torproject" for product "Tor"				0.4.4.1 Search vendor "Torproject" for product "Tor" and version "0.4.4.1"		alpha		Affected
Torproject Search vendor "Torproject"		Tor Search vendor "Torproject" for product "Tor"				0.4.4.2 Search vendor "Torproject" for product "Tor" and version "0.4.4.2"		alpha		Affected
Torproject Search vendor "Torproject"		Tor Search vendor "Torproject" for product "Tor"				0.4.4.3 Search vendor "Torproject" for product "Tor" and version "0.4.4.3"		alpha		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				33 Search vendor "Fedoraproject" for product "Fedora" and version "33"		-		Affected