calamares-nixos-extensions on NixOS /boot information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in calamares-nixos-extensions on NixOS. Impacted is an unknown function of the file /boot. This manipulation causes information disclosure. This vulnerability appears as CVE-2023-36476. The attack requires local access. There is no available exploit. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability classified as problematic was found in calamares-nixos-extensions on NixOS (affected version not known). Affected by this vulnerability is some unknown functionality of the file /boot. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. The summary by CVE is:

calamares-nixos-extensions provides Calamares branding and modules for NixOS, a distribution of GNU/Linux. Users of calamares-nixos-extensions version 0.3.12 and prior who installed NixOS through the graphical calamares installer, with an unencrypted `/boot`, on either non-UEFI systems or with a LUKS partition different from `/` have their LUKS key file in `/boot` as a plaintext CPIO archive attached to their NixOS initrd. A patch is available and anticipated to be part of version 0.3.13 to backport to NixOS 22.11, 23.05, and unstable channels. Expert users who have a copy of their data may, as a workaround, re-encrypt the LUKS partition(s) themselves.

The weakness was presented 06/29/2023 as 1348. The advisory is shared at github.com. This vulnerability is known as CVE-2023-36476 since 06/21/2023. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

Applying the patch 837ca4da5521a74d3b5ca6f7b88890a6713faa22 is able to eliminate this problem. The bugfix is ready for download at github.com.

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Productinfo

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CNA Base Score: 7.9
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: Partially
Local: Yes
Remote: No

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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 837ca4da5521a74d3b5ca6f7b88890a6713faa22

Timelineinfo

06/21/2023 🔍
06/29/2023 +8 days 🔍
06/29/2023 +0 days 🔍
07/21/2023 +22 days 🔍

Sourcesinfo

Advisory: 1348
Status: Confirmed

CVE: CVE-2023-36476 (🔍)
GCVE (CVE): GCVE-0-2023-36476
GCVE (VulDB): GCVE-100-232633

Entryinfo

Created: 06/29/2023 07:40
Updated: 07/21/2023 09:05
Changes: 06/29/2023 07:40 (51), 07/21/2023 09:05 (9)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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