CVE-2023-30851

Description

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.

How to fix CVE-2023-30851

To remediate CVE-2023-30851, upgrade the affected package to a fixed version below.

—upgrade to 1.11.16 or later
—upgrade to 1.11.16 or later
—upgrade to 1.11.16 or later
—upgrade to 1.11.16 or later
—upgrade to 1.11.16 or later
—upgrade to 1.11.16 or later
—upgrade to 1.11.16 or later
—upgrade to 1.11.16 or later
—upgrade to 1.11.16 or later

Is CVE-2023-30851 being exploited?

Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.

Affected packages (9)

from 0, < 1.11.16, >= 1.12.0, < 1.12.9, >= 1.13.0, < 1.13.2
from 0, < 1.11.16, >= 1.12.0, < 1.12.9, >= 1.13.0, < 1.13.2
from 0, < 1.11.16, >= 1.12.0, < 1.12.9, >= 1.13.0, < 1.13.2
from 0, < 1.11.16, >= 1.12.0, < 1.12.9, >= 1.13.0, < 1.13.2
from 0, < 1.11.16, >= 1.12.0, < 1.12.9, >= 1.13.0, < 1.13.2
from 0, < 1.11.16, >= 1.12.0, < 1.12.9, >= 1.13.0, < 1.13.2
from 0, < 1.11.16, >= 1.12.0, < 1.12.9, >= 1.13.0, < 1.13.2
from 0, < 1.11.16, >= 1.12.0, < 1.12.9, >= 1.13.0, < 1.13.2
from 0, < 1.11.16

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	MEDIUM5.3	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N