Username Enumeration via Login Interface in Multiple WSO2 Products Allows User Account Discovery
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 5.10.0.371, 5.10.0.380, 5.11.0.427, 6.0.0.254, 6.1.0.255, and 8 more
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
When Multi-Attribute Login is enabled, the login interface fails to consistently mask the existence of user accounts. For valid users, the server resolves and displays their canonical username, while for non-existent users, it echoes the original input. This occurs regardless of the validate_username configuration. The discovery of valid usernames can increase the risk of brute force attacks, social engineering attacks, and targeted information leakage. Attackers can leverage this information to craft more effective phishing campaigns or social engineering tactics to compromise user accounts or extract sensitive data.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- WSO2 WSO2 Identity Server as Key Manager
From 5.10.0 · fixed in 5.10.0.371
- WSO2 WSO2 Identity Server
From 5.10.0 · fixed in 5.10.0.380; From 5.11.0 · fixed in 5.11.0.427; From 6.0.0 · fixed in 6.0.0.254; From 6.1.0 · fixed in 6.1.0.255; From 7.0.0 · fixed in 7.0.0.132; From 7.1.0 · fixed in 7.1.0.40; From 7.2.0 · fixed in 7.2.0.2
- WSO2 WSO2 Open Banking AM
From 2.0.0 · fixed in 2.0.0.400
- WSO2 WSO2 API Manager
From 3.1.0 · fixed in 3.1.0.351; From 3.2.0 · fixed in 3.2.0.455; From 4.0.0 · fixed in 4.0.0.375
- WSO2 WSO2 Open Banking IAM
From 2.0.0 · fixed in 2.0.0.420