CVE-2018-1120: Buffer Overflow
First published: Mon May 07 2018(Updated: )
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).
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <4.17 | 4.17 |
| Linux Kernel | <4.17 | |
| Red Hat Virtualization Host EUS | =4.0 | |
| Red Hat Enterprise Linux Desktop | =7.0 | |
| Red Hat Enterprise Linux Server | =7.0 | |
| Red Hat Enterprise Linux Workstation | =7.0 | |
| Debian Linux | =8.0 | |
| Ubuntu | =16.04 | |
| Ubuntu | =18.04 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.133-1 6.12.21-1 6.12.22-1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- http://seclists.org/oss-sec/2018/q2/122
- http://www.securityfocus.com/bid/104229
- https://access.redhat.com/errata/RHSA-2018:2948
- https://access.redhat.com/errata/RHSA-2018:3083
- https://access.redhat.com/errata/RHSA-2018:3096
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1120
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7f7ccc2ccc2e70c6054685f5e3522efa81556830
- https://lists.debian.org/debian-lts-announce/2018/07/msg00020.html
- https://security.gentoo.org/glsa/201805-14
- https://usn.ubuntu.com/3752-1/
- https://usn.ubuntu.com/3752-2/
- https://usn.ubuntu.com/3752-3/
- https://usn.ubuntu.com/3910-1/
- https://usn.ubuntu.com/3910-2/
- https://www.exploit-db.com/exploits/44806/
- https://launchpad.net/bugs/cve/CVE-2018-1120
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1579542
- https://access.redhat.com/errata/RHSA-2020:3804
- https://access.redhat.com/errata/RHSA-2020:3810
- https://bugzilla.redhat.com/show_bug.cgi?id=1575472
- https://www.openwall.com/lists/oss-security/2018/05/17/1
- https://www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txt
- https://git.kernel.org/linus/7f7ccc2ccc2e70c6054685f5e3522efa81556830
- https://security-tracker.debian.org/tracker/CVE-2018-1120
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1120
- https://nvd.nist.gov/vuln/detail/CVE-2018-1120
- https://ubuntu.com/security/CVE-2018-1120
Frequently Asked Questions
What is the severity of CVE-2018-1120?
CVE-2018-1120 is classified as a high severity vulnerability affecting the Linux kernel.
How do I fix CVE-2018-1120?
To mitigate CVE-2018-1120, upgrade to Linux kernel version 4.17 or later.
What versions of the Linux kernel are affected by CVE-2018-1120?
CVE-2018-1120 affects Linux kernel versions prior to 4.17.
Which distributions are known to be affected by CVE-2018-1120?
Debian, Red Hat Enterprise Linux, and Ubuntu versions prior to their respective patches are affected by CVE-2018-1120.
Can CVE-2018-1120 be exploited remotely?
CVE-2018-1120 requires local access for exploitation, as it involves mmap()ing vulnerable file systems.
- agent/type
- collector/launchpad-cve
- source/Launchpad
- agent/first-publish-date
- agent/weakness
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2018-1120
- agent/software-canonical-lookup
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/references
- agent/remedy
- collector/usn-cve
- source/Ubuntu
- agent/description
- agent/trending
- agent/last-modified-date
- agent/source
- agent/author
- agent/event
- collector/nvd-cve
- source/NVD
- agent/software-canonical-lookup-request
- collector/nvd-index
- agent/softwarecombine
- agent/tags
- collector/security-tracker-debian
- source/Debian
- package-manager/redhat
- vendor/linux
- canonical/linux kernel
- vendor/redhat
- canonical/red hat virtualization host eus
- version/red hat virtualization host eus/4.0
- canonical/red hat enterprise linux desktop
- version/red hat enterprise linux desktop/7.0
- canonical/red hat enterprise linux server
- version/red hat enterprise linux server/7.0
- canonical/red hat enterprise linux workstation
- version/red hat enterprise linux workstation/7.0
- vendor/debian
- canonical/debian linux
- version/debian linux/8.0
- vendor/canonical
- canonical/ubuntu
- version/ubuntu/16.04
- version/ubuntu/18.04
- package-manager/debian