Vulnerability Details : CVE-2018-1066
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.
Vulnerability category: Memory Corruption
Products affected by CVE-2018-1066
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-1066
0.79%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 81 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-1066
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.1
|
HIGH | AV:N/AC:M/Au:N/C:N/I:N/A:C |
8.6
|
6.9
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
NIST |
CWE ids for CVE-2018-1066
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-1066
-
https://github.com/torvalds/linux/commit/cabfb3680f78981d26c078a26e5c748531257ebb
CIFS: Enable encryption during session setup phase · torvalds/linux@cabfb36 · GitHubPatch;Third Party Advisory
-
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cabfb3680f78981d26c078a26e5c748531257ebb
kernel/git/torvalds/linux.git - Linux kernel source treePatch;Vendor Advisory
-
https://www.debian.org/security/2018/dsa-4188
Debian -- Security Information -- DSA-4188-1 linuxThird Party Advisory
-
http://www.securityfocus.com/bid/103378
Linux Kernel 'fs/cifs/cifsencrypt.c' Denial of Service VulnerabilityThird Party Advisory;VDB Entry
-
https://usn.ubuntu.com/3880-1/
USN-3880-1: Linux kernel vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://patchwork.kernel.org/patch/10187633/
[stable] cifs: empty TargetInfo leads to crash on recovery - PatchworkPatch;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2018/07/msg00015.html
[SECURITY] [DLA 1422-1] linux security updateMailing List;Third Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1539599
1539599 – (CVE-2018-1066) CVE-2018-1066 kernel: Null pointer dereference in fs/cifs/cifsencrypt.c:setup_ntlmv2_rsp() when empty TargetInfo is returned in NTLMSSP setup negotiation response allowing toIssue Tracking;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2018/07/msg00016.html
[SECURITY] [DLA 1422-2] linux security updateMailing List;Third Party Advisory
-
https://usn.ubuntu.com/3880-2/
USN-3880-2: Linux kernel (Trusty HWE) vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://www.debian.org/security/2018/dsa-4187
Debian -- Security Information -- DSA-4187-1 linuxThird Party Advisory
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