Always-Incorrect Control Flow Implementation Affecting envoyproxy/envoy package, versions [1.31.0,1.31.5)[1.32.0,1.32.3)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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-ENVOYPROXYENVOY-8536542
- published19 Dec 2024
- disclosed18 Dec 2024
- creditUnknown
Introduced: 18 Dec 2024
CVE-2024-53271 (opens in a new tab)How to fix?
Upgrade envoyproxy/envoy to version 1.31.5, 1.32.3 or higher.
Overview
Affected versions of this package are vulnerable to Always-Incorrect Control Flow Implementation due to improper handling of HTTP1.1 non-101 1xx responses. An attacker can lead to downstream failures in networked devices by exploiting improper response handling.
PoC
HTTP/1.1 102 Processing\r\n
\r\n
HTTP/1.1 200 Ok \r\n
......