Received
CVE has been recently published to the CVE List and has been received by the NVD.

Products

lib9p

Source

1d66c9f9-fff2-411a-aa19-ca6312fa25e9

CVE-2024-8158 details

Published : Aug. 25, 2024, 10:15 p.m.
Last Modified : Aug. 25, 2024, 10:15 p.m.

Description

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.

CVSS Score

1	2	3	4	5	6	7	8	9	10

Weakness

Weakness	Name	Description
CWE-639	Authorization Bypass Through User-Controlled Key	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.

References

URL	Source
https://git.9front.org/plan9front/plan9front/07aa9bfeef55ca987d411115adcfbbd4390ecf34/commit.html	1d66c9f9-fff2-411a-aa19-ca6312fa25e9

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CVE-2024-8158