Cilium up to 1.13.3 information disclosure

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 (≈)
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CTI Interest Score
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3.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Cilium up to 1.13.3. It has been classified as problematic. This vulnerability affects unknown code. Performing a manipulation results in information disclosure. This vulnerability was named CVE-2023-34242. The attack needs to be approached within the local network. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Cilium up to 1.13.3. This affects an unknown code block. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is:

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to version 1.13.4, when Gateway API is enabled in Cilium, the absence of a check on the namespace in which a ReferenceGrant is created could result in Cilium unintentionally gaining visibility of secrets (including certificates) and services across namespaces. An attacker on an affected cluster can leverage this issue to use cluster secrets that should not be visible to them, or communicate with services that they should not have access to. Gateway API functionality is disabled by default. This vulnerability is fixed in Cilium release 1.13.4. As a workaround, restrict the creation of `ReferenceGrant` resources to admin users by using Kubernetes RBAC.

The weakness was presented 06/16/2023 as GHSA-r7wr-4w5q-55m6. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2023-34242 since 05/31/2023. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

Upgrading to version 1.13.4 eliminates this vulnerability. The upgrade is hosted for download at github.com.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.7

VulDB Base Score: 2.4
VulDB Temp Score: 2.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CNA Base Score: 3.4
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Cilium 1.13.4

Timelineinfo

05/31/2023 🔍
06/15/2023 +15 days 🔍
06/16/2023 +0 days 🔍
07/14/2023 +28 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-r7wr-4w5q-55m6
Status: Confirmed

CVE: CVE-2023-34242 (🔍)
GCVE (CVE): GCVE-0-2023-34242
GCVE (VulDB): GCVE-100-231663

Entryinfo

Created: 06/16/2023 00:09
Updated: 07/14/2023 07:42
Changes: 06/16/2023 00:09 (50), 07/14/2023 07:42 (11)
Complete: 🔍
Cache ID: 216::103

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