CVE-2023-41332
Cilium Layer 7 Proxy Denial of Service Vulnerability
Description
Cilium is a networking, observability, and security solution with an eBPF-based dataplane. In Cilium clusters where Cilium's Layer 7 proxy has been disabled, creating workloads with `policy.cilium.io/proxy-visibility` annotations (in Cilium >= v1.13) or `io.cilium.proxy-visibility` annotations (in Cilium <= v1.12) causes the Cilium agent to segfault on the node to which the workload is assigned. Existing traffic on the affected node will continue to flow, but the Cilium agent on the node will not able to process changes to workloads running on the node. This will also prevent workloads from being able to start on the affected node. The denial of service will be limited to the node on which the workload is scheduled, however an attacker may be able to schedule workloads on the node of their choosing, which could lead to targeted attacks. This issue has been resolved in Cilium versions 1.14.2, 1.13.7, and 1.12.14. Users unable to upgrade can avoid this denial of service attack by enabling the Layer 7 proxy.
INFO
Published Date :
Sept. 27, 2023, 3:19 p.m.
Last Modified :
Sept. 29, 2023, 1:56 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
1.4
Exploitability Score :
2.1
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-2023-41332.
| URL | Resource |
|---|---|
| https://github.com/cilium/cilium/pull/27597 | Exploit Issue Tracking Patch |
| https://github.com/cilium/cilium/security/advisories/GHSA-24m5-r6hv-ccgp | Exploit Mitigation Patch 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-2023-41332 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-41332 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.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Sep. 29, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L Changed Reference Type https://github.com/cilium/cilium/pull/27597 No Types Assigned https://github.com/cilium/cilium/pull/27597 Exploit, Issue Tracking, Patch Changed Reference Type https://github.com/cilium/cilium/security/advisories/GHSA-24m5-r6hv-ccgp No Types Assigned https://github.com/cilium/cilium/security/advisories/GHSA-24m5-r6hv-ccgp Exploit, Mitigation, Patch, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:* versions up to (excluding) 1.12.14 *cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:* versions from (including) 1.13.0 up to (excluding) 1.13.7 *cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:* versions from (including) 1.14.0 up to (excluding) 1.14.2
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-41332 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-2023-41332
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} 0.00%
score
0.07204
percentile