CVE-2018-1120

LOW

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

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/

Details

Source: MITRE

Published: 2018-06-20

Updated: 2019-10-09

Type: CWE-119

Risk Information

CVSS v2.0

Base Score: 3.5

Vector: AV:N/AC:M/Au:S/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 6.8

Severity: LOW

CVSS v3.0

Base Score: 5.3

Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 1.6

Severity: MEDIUM

Tenable Plugins

View all (38 total)

IDNameProductFamilySeverity
140748RHEL 6 : kernel-rt (RHSA-2020:3810)NessusRed Hat Local Security Checks
low
140745RHEL 7 : kernel (RHSA-2020:3804)NessusRed Hat Local Security Checks
low
127281NewStart CGSL CORE 5.04 / MAIN 5.04 : kernel-rt Multiple Vulnerabilities (NS-SA-2019-0074)NessusNewStart CGSL Local Security Checks
critical
127272NewStart CGSL CORE 5.04 / MAIN 5.04 : kernel Multiple Vulnerabilities (NS-SA-2019-0070)NessusNewStart CGSL Local Security Checks
critical
125282SUSE SLES12 Security Update : kernel (SUSE-SU-2019:1287-1) (MDSUM/RIDL) (MFBDS/RIDL/ZombieLoad) (MLPDS/RIDL) (MSBDS/Fallout)NessusSuSE Local Security Checks
high
124973EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1520)NessusHuawei Local Security Checks
high
124832EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1510)NessusHuawei Local Security Checks
low
123226openSUSE Security Update : the Linux Kernel (openSUSE-2019-536) (Spectre)NessusSuSE Local Security Checks
high
122893Ubuntu 14.04 LTS : Linux kernel (Xenial HWE) vulnerabilities (USN-3910-2)NessusUbuntu Local Security Checks
medium
122892Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-3910-1)NessusUbuntu Local Security Checks
medium
122609SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2019:0541-1)NessusSuSE Local Security Checks
high
122414EulerOS 2.0 SP2 : kernel (EulerOS-SA-2019-1062)NessusHuawei Local Security Checks
high
121633openSUSE Security Update : the Linux Kernel (openSUSE-2019-140)NessusSuSE Local Security Checks
high
121505Slackware 14.2 : Slackware 14.2 kernel (SSA:2019-030-01)NessusSlackware Local Security Checks
high
121344SUSE SLES12 Security Update : kernel (SUSE-SU-2019:0148-1) (Spectre)NessusSuSE Local Security Checks
high
120599Fedora 28 : kernel (2018-8ce90c8b24)NessusFedora Local Security Checks
low
120067SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2018:2092-1) (Spectre)NessusSuSE Local Security Checks
high
119638Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2018-4304)NessusOracle Linux Local Security Checks
high
119565EulerOS 2.0 SP3 : kernel (EulerOS-SA-2018-1406)NessusHuawei Local Security Checks
medium
119187Scientific Linux Security Update : kernel on SL7.x x86_64 (20181030)NessusScientific Linux Local Security Checks
high
118990CentOS 7 : kernel (CESA-2018:3083)NessusCentOS Local Security Checks
high
118770Oracle Linux 7 : kernel (ELSA-2018-3083)NessusOracle Linux Local Security Checks
high
118528RHEL 7 : kernel-rt (RHSA-2018:3096)NessusRed Hat Local Security Checks
high
118525RHEL 7 : kernel (RHSA-2018:3083)NessusRed Hat Local Security Checks
high
118513RHEL 7 : kernel-alt (RHSA-2018:2948) (Spectre)NessusRed Hat Local Security Checks
high
117586EulerOS Virtualization 2.5.1 : kernel (EulerOS-SA-2018-1280)NessusHuawei Local Security Checks
medium
112189Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel (Azure, GCP, OEM) vulnerabilities (USN-3752-3)NessusUbuntu Local Security Checks
high
112110Ubuntu 16.04 LTS : Linux kernel (HWE) vulnerabilities (USN-3752-2)NessusUbuntu Local Security Checks
high
112109Ubuntu 18.04 LTS : Linux kernel vulnerabilities (USN-3752-1)NessusUbuntu Local Security Checks
high
111414openSUSE Security Update : the Linux Kernel (openSUSE-2018-762) (Spectre)NessusSuSE Local Security Checks
high
111165Debian DLA-1423-1 : linux-4.9 new package (Spectre)NessusDebian Local Security Checks
high
111151Virtuozzo 6 : parallels-server-bm-release / vzkernel / etc (VZA-2018-048)NessusVirtuozzo Local Security Checks
medium
111104Virtuozzo 7 : readykernel-patch (VZA-2018-046)NessusVirtuozzo Local Security Checks
low
111103Virtuozzo 7 : readykernel-patch (VZA-2018-045)NessusVirtuozzo Local Security Checks
low
110461Amazon Linux AMI : kernel (ALAS-2018-1038) (Spectre)NessusAmazon Linux Local Security Checks
medium
110455Amazon Linux 2 : kernel (ALAS-2018-1038) (Spectre)NessusAmazon Linux Local Security Checks
medium
110255GLSA-201805-14 : procps: Multiple vulnerabilitiesNessusGentoo Local Security Checks
medium
110170Fedora 27 : kernel (2018-93c2e74446) (Spectre)NessusFedora Local Security Checks
medium