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

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CVE-2021-34807

Severity CVSS v4.0:
Pending analysis
Type:
CWE-601 URL Redirection to Untrusted Site ('Open Redirect')
Publication date:
02/07/2021
Last modified:
08/07/2021

Description

An open redirect vulnerability exists in the /preauth Servlet in Zimbra Collaboration Suite through 9.0. To exploit the vulnerability, an attacker would need to have obtained a valid zimbra auth token or a valid preauth token. Once the token is obtained, an attacker could redirect a user to any URL via isredirect=1&redirectURL= in conjunction with the token data (e.g., a valid authtoken= value).

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:P/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 5.80 MEDIUM
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N

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

Base Score 2.0
5.80
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:* 8.8.15 (excluding)
cpe:2.3:a:zimbra:collaboration:8.8.15:-:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p1:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p10:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p11:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p12:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p13:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p14:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p15:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p16:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p17:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p18:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p19:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p2:*:*:*:*:*:*
cpe:2.3:a:zimbra:collaboration:8.8.15:p20:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools