Comparison Using Wrong Factors Affecting haproxy package, versions [v2.2-dev3,v3.2-dev10)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-HAPROXY-10361618
- published16 Jun 2025
- disclosed9 Apr 2025
- creditAleandro Prudenzano, Edoardo Geraci
Introduced: 9 Apr 2025
CVE-2025-32464 (opens in a new tab)How to fix?
Upgrade haproxy to version v3.2-dev10 or higher.
Overview
Affected versions of this package are vulnerable to Comparison Using Wrong Factors due to improper back-reference replacement length check in sample_conv_regsub. An attacker can trigger this by sending a crafted input that causes a pre-configured rule to replace multiple short patterns with larger ones, leading to a buffer overflow that could crash the service.
The flaw occurs because the validation for the replacement size is calculated against the final output buffer for each match, rather than the intermediate temporary buffer, allowing the cumulative size of multiple replacements to exceed the temporary buffer's capacity.