CVE-2023-34966

high · 7.5

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.

7.5

CVSS

62.4%

EPSS (exploit prob.)

99th

EPSS percentile

2023-07-20

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CWE-835

Affected products

Vendor	Product	Affected versions
samba	samba	< 4.16.11
samba	samba	>= 4.17.0, < 4.17.10
samba	samba	>= 4.18.0, < 4.18.5
fedoraproject	fedora	37
fedoraproject	fedora	38
redhat	enterprise_linux	8.0
redhat	enterprise_linux	9.0
debian	debian_linux	11.0
debian	debian_linux	12.0

Check a specific version with /api/v1/cve/match.

References

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2023-34966