N/A

CVSS Score

-

CVSS Score

Basic Information

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CVE-2014-2064

CVE-2014-2064: Jenkins allows attackers to determine whether a user exists

The loadUserByUsername function in hudson/security/HudsonPrivateSecurityRealm.java in Jenkins before 1.551 and LTS before 1.532.2 allows remote attackers to determine whether a user exists via vectors related to failed login attempts.

(GitHub Advisory)

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CVE-2014-2064

CVE-2014-2064:

N/A

CVSS Score

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
org.jenkins-ci.main:jenkins-core	maven	>= 1.533, < 1.551	1.551
org.jenkins-ci.main:jenkins-core	maven	< 1.532.2	1.532.2

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability arises from the error message behavior in the authenticate method. Before the patch, when a login attempt failed due to an incorrect password, the error message explicitly included the username (e.g., 'Failed to login as alice'). This allowed attackers to distinguish between invalid usernames (which would trigger a UsernameNotFoundException) and valid usernames with incorrect passwords (which would trigger a BadCredentialsException containing the username). The commit diff shows the fix modified the authenticate method to use a generic error message, confirming this as the source of the vulnerability. While the CVE title mentions loadUserByUsername, the actual information leak occurs in authenticate's error handling.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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