CVE-2018-1120

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).

References

https://www.exploit-db.com/exploits/44806/

https://usn.ubuntu.com/3910-2/

https://usn.ubuntu.com/3910-1/

https://usn.ubuntu.com/3752-3/

https://usn.ubuntu.com/3752-2/

https://usn.ubuntu.com/3752-1/

https://security.gentoo.org/glsa/201805-14

https://lists.debian.org/debian-lts-announce/2018/07/msg00020.html

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7f7ccc2ccc2e70c6054685f5e3522efa81556830

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1120

https://access.redhat.com/errata/RHSA-2018:3096

https://access.redhat.com/errata/RHSA-2018:3083

https://access.redhat.com/errata/RHSA-2018:2948

http://www.securityfocus.com/bid/104229

http://seclists.org/oss-sec/2018/q2/122

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3