Fedora 38 update for samba

Published: 2022-09-13

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2022-32743 CVE-2022-1615
CWE-ID	CWE-276 CWE-330
Exploitation vector	Local network
Public exploit	N/A
Vulnerable software	Fedora Operating systems & Components / Operating system samba Operating systems & Components / Operating system package or component
Vendor	Fedoraproject

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Incorrect default permissions

EUVDB-ID: #VU67271

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-32743

CWE-ID: CWE-276 - Incorrect Default Permissions

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to Samba does not validate the Validated-DNS-Host-Name for the dNSHostName attribute. A remote attacker can set an arbitrary hostname and perform MitM attack.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 38.0

samba: before 4.17.0-1.fc38

CPE2.3

External links

https://bodhi.fedoraproject.org/updates/FEDORA-2022-a457400fcd

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Use of insufficiently random values

EUVDB-ID: #VU67270

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-1615

CWE-ID: CWE-330 - Use of Insufficiently Random Values