Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2021-28089

Severity CVSS v4.0:
Pending analysis
Type:
CWE-400 Uncontrolled Resource Consumption ('Resource Exhaustion')
Publication date:
19/03/2021
Last modified:
07/11/2023

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.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Physical

Base Score 2.0
5.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* 0.3.5.14 (excluding)
cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* 0.4.4.4 (including) 0.4.4.8 (excluding)
cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* 0.4.5.0 (including) 0.4.5.7 (excluding)
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:o:fedoraproject:fedora:33:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools