CVE-2017-12151 Security feature bypass in samba

What is CVE-2017-12151?

CVE-2017-12151 is a high-severity vulnerability in Debian Debian Linux, published on 27 Jul 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A flaw was found in the way samba client before samba 4.4.16, samba 4.5.14 and samba 4.6.8 used encryption with the max protocol set as SMB3. The connection could lose the requirement for signing and encrypting to any DFS redirects, allowing an attacker to read or alter the contents of the connection via a man-in-the-middle attack.

Weakness: CWE-310, CWE-300

Which versions are affected by CVE-2017-12151?

It affects 8 products.

Products include Debian Debian Linux, Hp Cifs Server, Redhat Enterprise Linux, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server Aus, Redhat Enterprise Linux Server Eus and 2 more.

How do I fix CVE-2017-12151?

Upgrade to a fixed version.

Is CVE-2017-12151 being exploited?

There is no known exploitation of CVE-2017-12151 in the wild and no public exploit code.

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All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2017-12151, DEBIAN-CVE-2017-12151, ECHO-3a2e-e8a7-a38b, GHSA-xc7p-hf9j-w53w, UBUNTU-CVE-2017-12151.