9front lib9p authorization

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability was found in 9front. It has been rated as critical. This vulnerability affects unknown code of the component lib9p. Performing a manipulation results in authorization. This vulnerability is identified as CVE-2024-8158. The attack can be initiated remotely. There is not any exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability classified as critical has been found in 9front (version unknown). This affects an unknown function of the component lib9p. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A bug in the 9p authentication implementation within lib9p allows an attacker with an existing valid user within the configured auth server to impersonate any other valid filesystem user. This is due to lib9p not properly verifying that the uname given in the Tauth and Tattach 9p messages matches the client UID returned from the factotum authentication handshake. The only filesystem making use of these functions within the base 9front systems is the experimental hjfs disk filesystem, other disk filesystems (cwfs and gefs) are not affected by this bug. This bug was inherited from Plan 9 and is present in all versions of 9front and is remedied fully in commit 9645ae07eb66a59015e3e118d0024790c37400da.

The weakness was released by Humm. It is possible to read the advisory at git.9front.org. This vulnerability is uniquely identified as CVE-2024-8158 since 08/25/2024. The exploitability is told to be easy. It is possible to initiate the attack remotely. The technical details are unknown and an exploit is not publicly available.

Applying the patch 9645ae07eb66a59015e3e118d0024790c37400da is able to eliminate this problem. The bugfix is ready for download at git.9front.org.

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

Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔍
CNA CVSS-BT Score: 🔍
CNA Vector: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Authorization
CWE: CWE-639 / CWE-285 / 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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 9645ae07eb66a59015e3e118d0024790c37400da

Timelineinfo

08/25/2024 🔍
08/26/2024 +1 days 🔍
08/26/2024 +0 days 🔍
09/13/2024 +18 days 🔍

Sourcesinfo

Advisory: git.9front.org
Researcher: Humm
Status: Confirmed

CVE: CVE-2024-8158 (🔍)
GCVE (CVE): GCVE-0-2024-8158
GCVE (VulDB): GCVE-100-275751

Entryinfo

Created: 08/26/2024 08:26
Updated: 09/13/2024 05:40
Changes: 08/26/2024 08:26 (70), 08/27/2024 05:20 (1), 09/13/2024 05:40 (11)
Complete: 🔍
Cache ID: 216::103

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