CVE-2016-7543
HIGHBash < 4.3 - Local Privilege Escalation via SHELLOPTS and PS4 Environment Variables
Title source: llmDescription
Bash before 4.4 allows local users to execute arbitrary commands with root privileges via crafted SHELLOPTS and PS4 environment variables.
References (11)
Core 11
Core References
Vendor Advisory vendor-advisory
x_refsource_redhat
http://rhn.redhat.com/errata/RHSA-2017-0725.html
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OU3C756YPHDAAPFX76UGZBAQQQ5UMHS5/
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:1931
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F7XOQSHU63Y357NHU5FPTFBM6I3YOCQB/
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2016/09/26/9
Patch, Vendor Advisory mailing-list
x_refsource_mlist
https://lists.gnu.org/archive/html/bug-bash/2016-09/msg00018.html
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/93183
Vendor Advisory x_refsource_confirm
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05388115
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z2VRBSIPZDZ75ZQ2DLITHUIDW4W26KVR/
Third Party Advisory, VDB Entry vdb-entry
x_refsource_sectrack
http://www.securitytracker.com/id/1037812
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/201701-02
Scores
CVSS v3
8.4
EPSS
0.0010
EPSS Percentile
27.4%
Attack Vector
LOCAL
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-20
Status
published
Products (4)
fedoraproject/fedora
23
fedoraproject/fedora
24
fedoraproject/fedora
25
gnu/bash
< 4.3
Published
Jan 19, 2017
Tracked Since
Feb 18, 2026