Email address disclosure via MD5 Gravatar hashes
Published Sep 25, 2024 · Updated Sep 27, 2024
Information disclosure in Apache Answer 1.3.5 and earlier allows remote attackers to recover user email addresses from Gravatar URLs. The profile settings code lowercases and trims the account email, feeds it to MD5, and embeds the 32-character digest in a Gravatar URL. An attacker needs network access to a page exposing a user's generated avatar URL; no credentials or user interaction are required.
Summary
What happened
Information disclosure in Apache Answer 1.3.5 and earlier allows remote attackers to recover user email addresses from Gravatar URLs. The profile settings code lowercases and trims the account email, feeds it to MD5, and embeds the 32-character digest in a Gravatar URL. An attacker needs network access to a page exposing a user's generated avatar URL; no credentials or user interaction are required.
The record
- CVE
- CVE-2024-40761
- Published
- Sep 25, 2024
- Updated
- Sep 27, 2024
- Vendor
- The Apache Software Foundation
- Product
- Apache Answer
- Classifications
- CWE-326, T1589.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 25, 2024CVE publishedPublication date reported by the CVE source.
- Sep 27, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=1.3.5
What conditions does exploitation require?
What is affected?
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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