Cilium up to 1.11.14/1.12.7/1.13.0 Source IP Address improper authorization
|CVSS Meta Temp Score|
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
|Current Exploit Price (≈)|
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
|CTI Interest Score|
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
A vulnerability, which was classified as critical, was found in Cilium up to 1.11.14/1.12.7/1.13.0. This affects an unknown code block of the component Source IP Address Handler. The manipulation with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The software does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:
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.
The weakness was disclosed 03/18/2023 as GHSA-8fg8-jh2h-f2hc. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2023-27594 since 03/04/2023. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.
Upgrading to version 1.11.15, 1.12.8 or 1.13.1 eliminates this vulnerability.
CVSSv3VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2
VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍
NVD Base Score: 7.3
NVD Vector: 🔒
CNA Base Score: 4.2
CNA Vector (GitHub, Inc.): 🔒
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
ExploitingClass: Improper authorization
CWE: CWE-285 / CWE-266
Status: Not defined
EPSS Score: 🔒
EPSS Percentile: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒
Threat IntelligenceInterest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍
0-Day Time: 🔒
Upgrade: Cilium 1.11.15/1.12.8/1.13.1
Timeline03/04/2023 CVE reserved
03/18/2023 +14 days Advisory disclosed
03/18/2023 +0 days VulDB entry created
04/11/2023 +24 days VulDB last update
CVE: CVE-2023-27594 (🔒)
EntryCreated: 03/18/2023 08:33 AM
Updated: 04/11/2023 02:59 PM
Changes: 03/18/2023 08:33 AM (50), 04/11/2023 02:56 PM (1), 04/11/2023 02:59 PM (11)
Do you want to use VulDB in your project?
Use the official API to access entries easily!
No comments yet. Languages: en.
Please log in to comment.