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Samba Multiple DoS Vulnerability (CVE-2020-10745, CVE-2020-14303)

Information

Severity

Severity

Medium

Family

Family

Denial of Service

CVSSv2 Base

CVSSv2 Base

5.0

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Solution Type

Solution Type

Vendor Patch

Created

Created

2 years ago

Modified

Modified

2 years ago

Summary

Samba is prone to two denial-of-service vulnerabilities.

Insight

Insight

- Compression of replies to NetBIOS over TCP/IP name resolution and DNS packets (which can be supplied as UDP requests) can be abused to consume excessive amounts of CPU on the Samba AD DC (only). (CVE-2020-10745) - The AD DC NBT server in Samba 4.0 will enter a CPU spin and not process further requests once it receives a empty (zero-length) UDP packet to port 137. (CVE-2020-14303)

Affected Software

Affected Software

All Samba versions since 4.0.0.

Detection Method

Detection Method

Checks if a vulnerable version is present on the target host.

Solution

Solution

Update to version 4.10.17, 4.11.11, 4.12.4 or later.

Common Vulnerabilities and Exposures (CVE)