Improper Handling of Exceptional Conditions Affecting github.com/cilium/cilium/pkg/maps/policymap package, versions >=1.16.0 <1.16.4
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-GOLANG-GITHUBCOMCILIUMCILIUMPKGMAPSPOLICYMAP-8400920
- published26 Nov 2024
- disclosed25 Nov 2024
- creditUnknown
Introduced: 25 Nov 2024
NewCVE-2024-52529 (opens in a new tab)How to fix?
Upgrade github.com/cilium/cilium/pkg/maps/policymap to version 1.16.4 or higher.
Overview
Affected versions of this package are vulnerable to Improper Handling of Exceptional Conditions which allows attackers to bypass Layer 7 policy enforcement by sending traffic that matches the Layer 7 policy but is within the broader Layer 3 port range.
Note:
This is only exploitable if the user have an allow policy that selects a Layer 3 destination and a port range in addition of a Layer 7 allow policy that selects a specific port within the first policy's range.
This issue only affects users who use Cilium's port range functionality
Workaround
Users who are enabled to upgrade to the fixed version are advised to rewrite any policies that use port ranges to individually specify the ports permitted for traffic.