Vulnerability Details : CVE-2018-1120

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).
Vulnerability category: OverflowDenial of service
Published 2018-06-20 13:29:00
Updated 2019-10-09 23:38:09
Source Red Hat, Inc.
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2018-1120

Probability of exploitation activity in the next 30 days: 0.10%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 40 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2018-1120

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Source
3.5
 LOW AV:N/AC:M/Au:S/C:N/I:N/A:P
6.8
2.9
 nvd@nist.gov
5.3
 MEDIUM CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
1.6
3.6
 nvd@nist.gov
2.8
 LOW CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
1.3
1.4
 secalert@redhat.com

CWE ids for CVE-2018-1120

  • The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.
    Assigned by: nvd@nist.gov (Primary)
  • A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
    Assigned by: secalert@redhat.com (Secondary)

References for CVE-2018-1120

Products affected by CVE-2018-1120

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