Improper Input Validation Affecting bash package, versions <4.3.42-r4
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ALPINE33-BASH-468173
- published22 Sept 2019
- disclosed22 Sept 2019
- creditUnknown
Introduced: 22 Sep 2019
CVE-2016-7543 (opens in a new tab)How to fix?
Upgrade Alpine:3.3 bash to version 4.3.42-r4 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream bash package and not the bash package as distributed by Alpine.
See How to fix? for Alpine:3.3 relevant fixed versions and status.
Bash before 4.4 allows local users to execute arbitrary commands with root privileges via crafted SHELLOPTS and PS4 environment variables.
References
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F7XOQSHU63Y357NHU5FPTFBM6I3YOCQB/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OU3C756YPHDAAPFX76UGZBAQQQ5UMHS5/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Z2VRBSIPZDZ75ZQ2DLITHUIDW4W26KVR/
- https://security.gentoo.org/glsa/201701-02
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05388115
- https://lists.gnu.org/archive/html/bug-bash/2016-09/msg00018.html
- http://www.openwall.com/lists/oss-security/2016/09/26/9
- http://rhn.redhat.com/errata/RHSA-2017-0725.html
- https://access.redhat.com/errata/RHSA-2017:1931
- http://www.securityfocus.com/bid/93183
- http://www.securitytracker.com/id/1037812