Vote-count inflation via concurrent vote requests
Published Aug 3, 2023 · Updated Oct 10, 2024
A race condition in Apache Answer before 1.1.1 allows remote authenticated users to illegitimately increase a post's vote count. The vote repository checked for existing voting activity before updating ranks and inserting activity without locking the affected rows, so concurrent requests could pass the same check. An account and overlapping vote requests are required; the bounded consequence is unauthorized modification of vote counts and reputation ranks.
Summary
What happened
A race condition in Apache Answer before 1.1.1 allows remote authenticated users to illegitimately increase a post's vote count. The vote repository checked for existing voting activity before updating ranks and inserting activity without locking the affected rows, so concurrent requests could pass the same check. An account and overlapping vote requests are required; the bounded consequence is unauthorized modification of vote counts and reputation ranks.
The record
- CVE
- CVE-2023-4127
- Published
- Aug 3, 2023
- Updated
- Oct 10, 2024
- Vendor
- The Apache Software Foundation
- Product
- Apache Answer
- Classifications
- CWE-366, T1565.001
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 3, 2023CVE publishedPublication date reported by the CVE source.
- Oct 10, 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=unspecified <v1.1.1
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.
Public exploit references
- huntr vote-count race proof of conceptproof of concept · unverified
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Technologies
Your stack
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Your stack
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