CVE-2018-1066

Description

The Linux kernel before version 4.11 is vulnerable to a NULL pointer dereference in fs/cifs/cifsencrypt.c:setup_ntlmv2_rsp() that allows an attacker controlling a CIFS server to kernel panic a client that has this server mounted, because an empty TargetInfo field in an NTLMSSP setup negotiation response is mishandled during session recovery.

Category

6.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 2.56% Top 20%
Vendor Advisory debian.org Vendor Advisory debian.org Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory kernel.org
Affected: n/a Linux kernel 4.11
Published at:
Updated at:

References

Link Tags
https://lists.debian.org/debian-lts-announce/2018/07/msg00015.html third party advisory mailing list
https://www.debian.org/security/2018/dsa-4187 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00016.html third party advisory mailing list
https://github.com/torvalds/linux/commit/cabfb3680f78981d26c078a26e5c748531257ebb third party advisory patch
https://www.debian.org/security/2018/dsa-4188 third party advisory vendor advisory
https://usn.ubuntu.com/3880-1/ third party advisory vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1539599 issue tracking third party advisory
https://usn.ubuntu.com/3880-2/ third party advisory vendor advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cabfb3680f78981d26c078a26e5c748531257ebb patch vendor advisory
https://patchwork.kernel.org/patch/10187633/ third party advisory patch
http://www.securityfocus.com/bid/103378 vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2018-1066?
CVE-2018-1066 has been scored as a medium severity vulnerability.
How to fix CVE-2018-1066?
To fix CVE-2018-1066, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-1066 being actively exploited in the wild?
It is possible that CVE-2018-1066 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-1066?
CVE-2018-1066 affects n/a Linux kernel 4.11.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.