CVE-2018-1066

moderate-risk
Published 2018-03-02

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.

Do I need to act?

~
5.0% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.5/10 Medium
NETWORK / LOW complexity

Affected Products (5)

Affected Vendors

Debian Linux Canonical

References (22)

Patch http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cabfb3...
Third Party Advisory http://www.securityfocus.com/bid/103378
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1539599
Patch https://github.com/torvalds/linux/commit/cabfb3680f78981d26c078a26e5c748531257eb...
Mailing List https://lists.debian.org/debian-lts-announce/2018/07/msg00015.html
Mailing List https://lists.debian.org/debian-lts-announce/2018/07/msg00016.html
Patch https://patchwork.kernel.org/patch/10187633/
Third Party Advisory https://usn.ubuntu.com/3880-1/
Third Party Advisory https://usn.ubuntu.com/3880-2/
Third Party Advisory https://www.debian.org/security/2018/dsa-4187
Third Party Advisory https://www.debian.org/security/2018/dsa-4188
Patch http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cabfb3...
Third Party Advisory http://www.securityfocus.com/bid/103378
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1539599
Patch https://github.com/torvalds/linux/commit/cabfb3680f78981d26c078a26e5c748531257eb...
Mailing List https://lists.debian.org/debian-lts-announce/2018/07/msg00015.html
Mailing List https://lists.debian.org/debian-lts-announce/2018/07/msg00016.html
Patch https://patchwork.kernel.org/patch/10187633/
Third Party Advisory https://usn.ubuntu.com/3880-1/
Third Party Advisory https://usn.ubuntu.com/3880-2/
and 2 more references
44
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 8/34 · Low
Exposure 12/34 · Low