CVE-2021-26084 Confluence Server OGNL injection

2021-08-1000:00:00

attackerkb.com

137

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.972 High

EPSS

Percentile

99.7%

JSON

In affected versions of Confluence Server and Data Center, an OGNL injection vulnerability exists that would allow an authenticated user, and in some instances an unauthenticated user, to execute arbitrary code on a Confluence Server or Data Center instance. The vulnerable endpoints can be accessed by a non-administrator user or unauthenticated user if ‘Allow people to sign up to create their account’ is enabled. To check whether this is enabled go to COG > User Management > User Signup Options. The affected versions are before version 6.13.23, from version 6.14.0 before 7.4.11, from version 7.5.0 before 7.11.6, and from version 7.12.0 before 7.12.5.

Recent assessments:

wvu-r7 at September 02, 2021 1:27am UTC reported:

Please see the Rapid7 analysis. Thank you to Jang (@testanull) for being a great collaborator. :)

NinjaOperator at September 01, 2021 5:38pm UTC reported:

Please see the Rapid7 analysis. Thank you to Jang (@testanull) for being a great collaborator. :)

GhostlaX at September 04, 2021 1:44am UTC reported:

Please see the Rapid7 analysis. Thank you to Jang (@testanull) for being a great collaborator. :)

Cherylyin at September 03, 2021 2:03am UTC reported:

Please see the Rapid7 analysis. Thank you to Jang (@testanull) for being a great collaborator. :)

Assessed Attacker Value: 5
Assessed Attacker Value: 5Assessed Attacker Value: 5