PT-2015-3397 · Samba Team+6 · Samba+5
Stefan Metzmacher
·
Published
2015-12-16
·
Updated
2024-06-15
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CVE-2015-5296
CVSS v3.1
5.4
Medium
| Vector | AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N |
Name of the Vulnerable Software and Affected Versions
Samba versions 3.x and 4.x before 4.1.22
Samba versions 4.2.x before 4.2.7
Samba versions 4.3.x before 4.3.3
Description
The issue is related to a lack of input validation in the Samba package, specifically in components clidfs.c, libsmb server.c, and smbXcli base.c. This allows a remote attacker to impact data integrity. The vulnerability is also related to Samba supporting connections that are encrypted but unsigned, which enables man-in-the-middle attackers to conduct encrypted-to-unencrypted downgrade attacks by modifying the client-server data stream.
Recommendations
For Samba versions 3.x and 4.x before 4.1.22, update to version 4.1.22 or later to resolve the issue.
For Samba versions 4.2.x before 4.2.7, update to version 4.2.7 or later to resolve the issue.
For Samba versions 4.3.x before 4.3.3, update to version 4.3.3 or later to resolve the issue.
As a temporary workaround, consider disabling the use of encrypted but unsigned connections to minimize the risk of exploitation.
Fix
RCE
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Centos
Red Hat
Samba
Suse
Ubuntu