CVE-2023-27594
Cilium IPv6 NodePort IP Address Mishandling Vulnerability
Description
Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.11.15, 1.12.8, and 1.13.1, under specific conditions, Cilium may misattribute the source IP address of traffic to a cluster, identifying external traffic as coming from the host on which Cilium is running. As a consequence, network policies for that cluster might be bypassed, depending on the specific network policies enabled. This issue only manifests when Cilium is routing IPv6 traffic and NodePorts are used to route traffic to pods. IPv6 and endpoint routes are both disabled by default. The problem has been fixed and is available on versions 1.11.15, 1.12.8, and 1.13.1. As a workaround, disable IPv6 routing.
INFO
Published Date :
March 17, 2023, 8:15 p.m.
Last Modified :
Nov. 7, 2023, 4:10 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.4
Exploitability Score :
3.9
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-27594.
| URL | Resource |
|---|---|
| https://github.com/cilium/cilium/releases/tag/v1.11.15 | Third Party Advisory |
| https://github.com/cilium/cilium/releases/tag/v1.12.8 | Third Party Advisory |
| https://github.com/cilium/cilium/releases/tag/v1.13.1 | Third Party Advisory |
| https://github.com/cilium/cilium/security/advisories/GHSA-8fg8-jh2h-f2hc | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-27594 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-27594 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Changed Description Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.11.15, 1.12.8, and 1.13.1, under specific conditions, Cilium may misattribute the source IP address of traffic to a cluster, identifying external traffic as coming from the host on which Cilium is running. As a consequence, network policies for that cluster might be bypassed, depending on the specific network policies enabled. This issue only manifests when Cilium is routing IPv6 traffic and NodePorts are used to route traffic to pods. IPv6 and endpoint routes are both disabled by default. The problem has been fixed and is available on versions 1.11.15, 1.12.8, and 1.13.1. As a workaround, disable IPv6 routing. Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.11.15, 1.12.8, and 1.13.1, under specific conditions, Cilium may misattribute the source IP address of traffic to a cluster, identifying external traffic as coming from the host on which Cilium is running. As a consequence, network policies for that cluster might be bypassed, depending on the specific network policies enabled. This issue only manifests when Cilium is routing IPv6 traffic and NodePorts are used to route traffic to pods. IPv6 and endpoint routes are both disabled by default. The problem has been fixed and is available on versions 1.11.15, 1.12.8, and 1.13.1. As a workaround, disable IPv6 routing. -
Initial Analysis by [email protected]
Mar. 24, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L Changed Reference Type https://github.com/cilium/cilium/releases/tag/v1.11.15 No Types Assigned https://github.com/cilium/cilium/releases/tag/v1.11.15 Third Party Advisory Changed Reference Type https://github.com/cilium/cilium/releases/tag/v1.12.8 No Types Assigned https://github.com/cilium/cilium/releases/tag/v1.12.8 Third Party Advisory Changed Reference Type https://github.com/cilium/cilium/releases/tag/v1.13.1 No Types Assigned https://github.com/cilium/cilium/releases/tag/v1.13.1 Third Party Advisory Changed Reference Type https://github.com/cilium/cilium/security/advisories/GHSA-8fg8-jh2h-f2hc No Types Assigned https://github.com/cilium/cilium/security/advisories/GHSA-8fg8-jh2h-f2hc Third Party Advisory Added CWE NIST CWE-863 Added CPE Configuration OR *cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:* versions up to (excluding) 1.11.15 *cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:* versions from (including) 1.12.0 up to (excluding) 1.12.8 *cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:* versions from (including) 1.13.0 up to (excluding) 1.13.1
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-27594 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-27594
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.12 }} 0.01%
score
0.47919
percentile