CVE-2016-7543

HIGH

GNU Bash < 4.3 - Improper Input Validation

Title source: rule

Description

Bash before 4.4 allows local users to execute arbitrary commands with root privileges via crafted SHELLOPTS and PS4 environment variables.

References (11)

[Vendor Advisory] http://rhn.redhat.com/errata/RHSA-2017-0725.html

[Mailing List, Third Party Advisory] http://www.openwall.com/lists/oss-security/2016/09/26/9

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/93183

[Third Party Advisory, VDB Entry] http://www.securitytracker.com/id/1037812

[Vendor Advisory] https://access.redhat.com/errata/RHSA-2017:1931

[Vendor Advisory] https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05388115

[Patch, Vendor Advisory] https://lists.gnu.org/archive/html/bug-bash/2016-09/msg00018.html

[Third Party Advisory] https://security.gentoo.org/glsa/201701-02

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F7XOQSHU63Y357NHU5FPTFBM6I3YOCQB/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OU3C756YPHDAAPFX76UGZBAQQQ5UMHS5/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z2VRBSIPZDZ75ZQ2DLITHUIDW4W26KVR/

Scores

CVSS v3 8.4

EPSS 0.0008

EPSS Percentile 24.2%

Attack Vector LOCAL

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

Classification

CWE

CWE-20

Status draft

Affected Products (4)

gnu/bash < 4.3

fedoraproject/fedora

fedoraproject/fedora

fedoraproject/fedora

Timeline

Published Jan 19, 2017

Tracked Since Feb 18, 2026