CVE-2023-34966
High
Description
An infinite loop vulnerability was found in Samba's mdssvc RPC service for Spotlight. When parsing Spotlight mdssvc RPC packets sent by the client, the core unmarshalling function sl_unpack_loop() did not validate a field in the network packet that contains the count of elements in an array-like structure. By passing 0 as the count value, the attacked function will run in an endless loop consuming 100% CPU. This flaw allows an attacker to issue a malformed RPC request, triggering an infinite loop, resulting in a denial of service condition.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Samba
PublishedJul 20, 2023
First seenJul 20, 2023
Weakness typeCWE-835CWE-835
How to fix
Update
- samba samba4.16.11, 4.17.10, 4.18.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| samba samba | v < 4.16.11, 4.17.0 ≤ v < 4.17.10, 4.18.0 ≤ v < 4.18.5 | 4.16.11, 4.17.10, 4.18.5 |
| fedoraproject fedora | 37, 38 | — |
| redhat enterprise_linux | 8.0, 9.0 | — |
| debian debian_linux | 11.0, 12.0 | — |
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