CVE-2018-1120 Detail

Current Description

A flaw was found affecting the Linux kernel before version 4.17. By mmap()ing a FUSE-backed file onto a process's memory containing command line arguments (or environment strings), an attacker can cause utilities from psutils or procps (such as ps, w) or any other program which makes a read() call to the /proc/<pid>/cmdline (or /proc/<pid>/environ) files to block indefinitely (denial of service) or for some controlled time (as a synchronization primitive for other attacks).


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  5.3 MEDIUM
Vector:  CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Nist CVSS score does not match with CNA score
CNA:  Red Hat, Inc.
Base Score:  2.8 LOW
Vector:  CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://seclists.org/oss-sec/2018/q2/122 Exploit  Mailing List  Third Party Advisory 
http://www.securityfocus.com/bid/104229 Third Party Advisory  VDB Entry 
https://access.redhat.com/errata/RHSA-2018:2948 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2018:3083 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2018:3096 Third Party Advisory 
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1120 Issue Tracking  Patch  Third Party Advisory 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7f7ccc2ccc2e70c6054685f5e3522efa81556830 Patch  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2018/07/msg00020.html Mailing List  Third Party Advisory 
https://security.gentoo.org/glsa/201805-14 Third Party Advisory 
https://usn.ubuntu.com/3752-1/ Third Party Advisory 
https://usn.ubuntu.com/3752-2/ Third Party Advisory 
https://usn.ubuntu.com/3752-3/ Third Party Advisory 
https://usn.ubuntu.com/3910-1/
https://usn.ubuntu.com/3910-2/
https://www.exploit-db.com/exploits/44806/ Exploit  Third Party Advisory  VDB Entry 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer cwe source acceptance level NIST  
CWE-122 Heap-based Buffer Overflow Reference acceptance level Red Hat, Inc.  

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Change History

10 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-1120
NVD Published Date:
06/20/2018
NVD Last Modified:
10/09/2019
Source:
Red Hat, Inc.