CVE-2023-34966
HIGH
ACT NOW
Priority: 4.68
BB Relevance:
85/100
Published: 2023-07-20
Modified: 2026-11-07
First seen: 2026-11-07
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
S:
Unchanged
C:
None
I:
None
A:
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.
Weakness Classification (1)
Affected Software (7)
| Vendor | Product | Version |
|---|---|---|
| debian | debian_linux | 11.0 |
| debian | debian_linux | 12.0 |
| fedoraproject | fedora | 37 |
| fedoraproject | fedora | 38 |
| redhat | enterprise_linux | 8.0 |
| redhat | enterprise_linux | 9.0 |
| samba | samba | < 4.16.11 |
References & Advisories (12)
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vdb-entry
x_refsource_REDHAT
issue-tracking
x_refsource_REDHAT