CVE-2017-18206

critical
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

In utils.c in zsh before 5.4, symlink expansion had a buffer overflow.

References

https://access.redhat.com/errata/RHSA-2018:1932

https://access.redhat.com/errata/RHSA-2018:3073

https://lists.debian.org/debian-lts-announce/2020/12/msg00000.html

https://security.gentoo.org/glsa/201805-10

https://sourceforge.net/p/zsh/code/ci/c7a9cf465dd620ef48d586026944d9bd7a0d5d6d

https://usn.ubuntu.com/3593-1/

Details

Source: MITRE

Published: 2018-02-27

Updated: 2020-12-01

Type: CWE-119

Risk Information

CVSS v2

Base Score: 7.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 10

Severity: HIGH

CVSS v3

Base Score: 9.8

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

Impact Score: 5.9

Exploitability Score: 3.9

Severity: CRITICAL

Tenable Plugins

View all (22 total)

IDNameProductFamilySeverity
143401Debian DLA-2470-1 : zsh security updateNessusDebian Local Security Checks
critical
127411NewStart CGSL MAIN 4.05 : zsh Multiple Vulnerabilities (NS-SA-2019-0144)NessusNewStart CGSL Local Security Checks
critical
127273NewStart CGSL CORE 5.04 / MAIN 5.04 : zsh Multiple Vulnerabilities (NS-SA-2019-0070)NessusNewStart CGSL Local Security Checks
critical
121145Slackware 14.0 / 14.1 / 14.2 : zsh (SSA:2019-013-01)NessusSlackware Local Security Checks
critical
119524EulerOS 2.0 SP3 : zsh (EulerOS-SA-2018-1396)NessusHuawei Local Security Checks
critical
119466Amazon Linux AMI : zsh (ALAS-2018-1107)NessusAmazon Linux Local Security Checks
critical
119204Scientific Linux Security Update : zsh on SL7.x x86_64 (20181030)NessusScientific Linux Local Security Checks
critical
118989CentOS 7 : zsh (CESA-2018:3073)NessusCentOS Local Security Checks
critical
118769Oracle Linux 7 : zsh (ELSA-2018-3073)NessusOracle Linux Local Security Checks
critical
118524RHEL 7 : zsh (RHSA-2018:3073)NessusRed Hat Local Security Checks
critical
110893Scientific Linux Security Update : zsh on SL6.x i386/x86_64 (20180619)NessusScientific Linux Local Security Checks
critical
110707Oracle Linux 6 : zsh (ELSA-2018-1932)NessusOracle Linux Local Security Checks
critical
110652CentOS 6 : zsh (CESA-2018:1932)NessusCentOS Local Security Checks
critical
110607RHEL 6 : zsh (RHSA-2018:1932)NessusRed Hat Local Security Checks
critical
110174GLSA-201805-10 : Zsh: Multiple vulnerabilitiesNessusGentoo Local Security Checks
critical
109489EulerOS 2.0 SP2 : zsh (EulerOS-SA-2018-1091)NessusHuawei Local Security Checks
critical
109488EulerOS 2.0 SP1 : zsh (EulerOS-SA-2018-1090)NessusHuawei Local Security Checks
critical
109384openSUSE Security Update : zsh (openSUSE-2018-399)NessusSuSE Local Security Checks
critical
109355SUSE SLED12 / SLES12 Security Update : zsh (SUSE-SU-2018:1072-1)NessusSuSE Local Security Checks
critical
109139Amazon Linux 2 : zsh (ALAS-2018-986)NessusAmazon Linux Local Security Checks
critical
108506Fedora 26 : zsh (2018-9cdf18a850)NessusFedora Local Security Checks
critical
107257Ubuntu 14.04 LTS / 16.04 LTS / 17.10 : zsh vulnerabilities (USN-3593-1)NessusUbuntu Local Security Checks
critical