Vulnerability Details : CVE-2023-52442
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: validate session id and tree id in compound request
`smb2_get_msg()` in smb2_get_ksmbd_tcon() and smb2_check_user_session()
will always return the first request smb2 header in a compound request.
if `SMB2_TREE_CONNECT_HE` is the first command in compound request, will
return 0, i.e. The tree id check is skipped.
This patch use ksmbd_req_buf_next() to get current command in compound.
Products affected by CVE-2023-52442
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.5:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.5:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.5:rc3:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-52442
0.14%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 36 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-52442
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST | 2024-12-12 |
References for CVE-2023-52442
-
https://git.kernel.org/stable/c/3df0411e132ee74a87aa13142dfd2b190275332e
ksmbd: validate session id and tree id in compound request - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/017d85c94f02090a87f4a473dbe0d6ee0da72693
ksmbd: validate session id and tree id in compound request - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
http://www.openwall.com/lists/oss-security/2024/03/18/2
oss-security - 5 Linux kernel ksmbd vulnerabilities
-
https://git.kernel.org/stable/c/becb5191d1d5fdfca0198a2e37457bbbf4fe266f
ksmbd: validate session id and tree id in compound request - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/4c2b350b2e269e3fd17bbfa42de1b42775b777ac
ksmbd: validate session id and tree id in compound request - kernel/git/stable/linux.git - Linux kernel stable treePatch
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