Improper Restriction of Operations within the Bounds of a Memory Buffer Affecting envoyproxy/envoy package, versions [,1.29.9)[1.30.0,1.30.6)[1.31.0,1.31.2)
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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- published20 Sept 2024
- disclosed19 Sept 2024
- creditAndreas Moregård
Introduced: 19 Sep 2024
CVE-2024-45809 (opens in a new tab)How to fix?
Upgrade envoyproxy/envoy to version 1.29.9, 1.30.6, 1.31.2 or higher.
Overview
Affected versions of this package are vulnerable to Improper Restriction of Operations within the Bounds of a Memory Buffer due to the improper handling of clearRouteCache when remote JWKs are used, which requires asynchronous header processing. An attacker can trigger a crash in the upstream code by exploiting the ordering of continueDecoding and clearRouteCache under specific conditions.
Note:
This is only exploitable if remote JWKs are used, clear_route_cache is enabled on the provider, header operations are enabled in JWT filter, and the routing table is configured in a way that the JWT header operations modify requests to not match any route.