Potential HTTP policy bypass when using header rules in Cilium
8Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 2.6epss 0.7%
exploitation probability
0.7%top 52% of all CVEs
observed exploitation
nono source reports it
Cilium is a networking, observability, and security solution with an eBPF-based dataplane. This issue only impacts users who have a HTTP policy that applies to multiple `toEndpoints` AND have an allow-all rule in place that affects only one of those endpoints. In such cases, a wildcard rule will be appended to the set of HTTP rules, which could cause bypass of HTTP policies. This issue has been patched in Cilium 1.11.16, 1.12.9, and 1.13.2.
CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N
Affected products
cilium · cilium