SMB: Samba DCERPC Downgrade Badlock Denial of Service
This signature detects attempts to exploit a known vulnerability against Samba DCERPC. A successful attack can result in a denial-of-service condition.
Extended Description
The MS-SAMR and MS-LSAD protocol implementations in Samba 3.x and 4.x before 4.2.11, 4.3.x before 4.3.8, and 4.4.x before 4.4.2 mishandle DCERPC connections, which allows man-in-the-middle attackers to perform protocol-downgrade attacks and impersonate users by modifying the client-server data stream, aka "BADLOCK."
Affected Products
Samba samba
Short Name
SMB:SAMBA-DOWNGRADE-DOS
Severity
Minor
Recommended
False
Recommended Action
None
Category
SMB
Keywords
Badlock CVE-2015-5370 CVE-2016-2118 DCERPC Denial Downgrade Samba Service bid:86002 of
Release Date
06/17/2020
Supported Platforms
srx-branch-19.3
vsrx3bsd-19.2
srx-19.4
vsrx3bsd-19.4
srx-branch-19.4
vsrx-19.4
vsrx-19.2
srx-19.3
srx-branch-12.3
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx-12.3
vmx-19.3
srx-12.3
Sigpack Version
3590
False Positive
Unknown
Vendors
Samba
Debian
Canonical
CVSS Score
6.8
4.3