User enumeration via distinct password-recovery responses
Published Aug 1, 2023 · Updated Oct 21, 2024
User enumeration in PHP Jabbers Time Slots Booking Calendar 3.3 allows remote attackers to identify registered users during password recovery. The password-reminder workflow returns a distinct nonexistent-user message when a submitted email address is not registered, exposing account validity through the response. Access to the unauthenticated forgot-password form is sufficient; the resulting list of valid accounts supports targeted password attacks but does not itself compromise an account.
Summary
What happened
User enumeration in PHP Jabbers Time Slots Booking Calendar 3.3 allows remote attackers to identify registered users during password recovery. The password-reminder workflow returns a distinct nonexistent-user message when a submitted email address is not registered, exposing account validity through the response. Access to the unauthenticated forgot-password form is sufficient; the resulting list of valid accounts supports targeted password attacks but does not itself compromise an account.
The record
- CVE
- CVE-2023-33562
- Published
- Aug 1, 2023
- Updated
- Oct 21, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- T1589.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 1, 2023CVE publishedPublication date reported by the CVE source.
- Oct 21, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Forgot-password username-enumeration procedureproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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