CVE-2015-5296
MEDIUM severity · CVSS 5.4 · Improper input validation
5.4CVSS MEDIUM
Summary
Samba 3.x and 4.x before 4.1.22, 4.2.x before 4.2.7, and 4.3.x before 4.3.3 supports connections that are encrypted but unsigned, which allows man-in-the-middle attackers to conduct encrypted-to-unencrypted downgrade attacks by modifying the client-server data stream, related to clidfs.c, libsmb_server.c, and smbXcli_base.c.
Impact & exploitability
Attack vectorNetwork
Attack complexityHigh
Privileges requiredNone
User interactionNone
Confidentiality impactLow
Integrity impactLow
Availability impactNone
Exploit probability (EPSS)7%
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174076.htmlAdvisory
- http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174391.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00019.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00020.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00032.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00033.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00002.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00017.htmlAdvisory