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githubGitHub Advisory DatabaseGHSA-4JJJ-CM7Q-V6HR
HistoryMay 24, 2022 - 5:07 p.m.

Jenkins Diagnostic page exposed session cookies

2022-05-2417:07:40
CWE-200
GitHub Advisory Database
github.com
21
jenkins
session cookies
security advisory
cross-site scripting
http headers
hardening

CVSS2

4

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

5.4

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

EPSS

0.005

Percentile

77.1%

Jenkins shows various technical details about the current user on the /whoAmI page. In a previous fix, the Cookie header value containing the HTTP session ID was redacted. However, user metadata shown on this page could also include the HTTP session ID in Jenkins 2.218 and earlier, LTS 2.204.1 and earlier.

This allows attackers able to exploit a cross-site scripting vulnerability to obtain the HTTP session ID value from this page.

Jenkins 2.219, LTS 2.204.2 no longer prints out the affected user metadata that might contain the HTTP session ID.

Additionally, we also redact values of further authentication-related HTTP headers in addition to Cookie on this page as a hardening.

Affected configurations

Vulners
Node
org.jenkins-ci.main\Matchjenkins-core
OR
org.jenkins-ci.main\Matchjenkins-core

CVSS2

4

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

5.4

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

EPSS

0.005

Percentile

77.1%