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

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CVE-2021-22886

Severity CVSS v4.0:
Pending analysis
Type:
CWE-79 Cross-Site Scripting (XSS)
Publication date:
26/03/2021
Last modified:
30/03/2021

Description

Rocket.Chat before 3.11, 3.10.5, 3.9.7, 3.8.8 is vulnerable to persistent cross-site scripting (XSS) using nested markdown tags allowing a remote attacker to inject arbitrary JavaScript in a message. This flaw leads to arbitrary file read and RCE on Rocket.Chat desktop app.

Impact

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

Base Score: 6.10 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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

Base Score 3.x
6.10
Severity 3.x
MEDIUM
Vector 2.0
AV:N/AC:M/Au:N/C:N/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 4.30 MEDIUM
Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

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

Base Score 2.0
4.30
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:* 3.8.8 (excluding)
cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:* 3.9.0 (including) 3.9.7 (excluding)
cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:* 3.10.0 (including) 3.10.5 (excluding)
cpe:2.3:a:rocket.chat:rocket.chat:3.11.0:rc0:*:*:*:*:*:*
cpe:2.3:a:rocket.chat:rocket.chat:3.11.0:rc1:*:*:*:*:*:*
cpe:2.3:a:rocket.chat:rocket.chat:3.11.0:rc2:*:*:*:*:*:*
cpe:2.3:a:rocket.chat:rocket.chat:3.11.0:rc3:*:*:*:*:*:*
cpe:2.3:a:rocket.chat:rocket.chat:3.11.0:rc4:*:*:*:*:*:*
cpe:2.3:a:rocket.chat:rocket.chat:3.11.0:rc5:*:*:*:*:*:*
cpe:2.3:a:rocket.chat:rocket.chat:3.11.0:rc6:*:*:*:*:*:*
cpe:2.3:a:rocket.chat:rocket.chat:3.11.0:rc7:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools