PT-2024-38844 · Cwfs+4 · Cwfs+4

Cinap_Lenrek + 2 · Published 2024-08-25 · Updated 2024-09-12 · CVE-2024-8158

Positive Technologies (AI Summary)

CVSS v4.0

8.8

High

Base vector

AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/AU:N/V:C/RE:L/U:Red

Name of the Vulnerable Software and Affected Versions: 9front versions prior to commit 9645ae07eb66a59015e3e118d0024790c37400da

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.

Recommendations: For 9front versions prior to commit 9645ae07eb66a59015e3e118d0024790c37400da, update to a version that includes the remediation commit to secure your system. As a temporary workaround, consider restricting access to the experimental hjfs disk filesystem until the update is applied.

Fix

IDOR

Weakness Enumeration

CWE-639

Related Identifiers

CVE-2024-8158

Affected Products

9Front

Cwfs

Gefs

Hjfs

Lib9P

References · 9

• https://git.9front.org/plan9front/plan9front/07aa9bfeef55ca987d411115adcfbbd4390ecf34/commit.html · Patch
• https://osv.dev/vulnerability/CVE-2024-8158 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-8158 · Security Note
• https://t.me/cvenotify/92084 · Telegram Post
• https://t.me/latest_high_impact_cve/1056 · Telegram Post
• https://twitter.com/transilienceai/status/1829198733277319206 · Twitter Post
• https://t.me/cvedetector/4092 · Telegram Post
• https://twitter.com/VulmonFeeds/status/1827870984235331650 · Twitter Post
• https://twitter.com/CVEnew/status/1827822828273430783 · Twitter Post