Use After Free Affecting bash package, versions <4.3-14ubuntu1.2
Threat Intelligence
EPSS
0.04% (6th
percentile)
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Test your applications- Snyk ID SNYK-UBUNTU1604-BASH-351565
- published 23 Jan 2017
- disclosed 23 Jan 2017
Introduced: 23 Jan 2017
CVE-2016-9401 Open this link in a new tabHow to fix?
Upgrade Ubuntu:16.04 bash to version 4.3-14ubuntu1.2 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 Ubuntu.
See How to fix? for Ubuntu:16.04 relevant fixed versions and status.
popd in bash might allow local users to bypass the restricted shell and cause a use-after-free via a crafted address.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2016-9401
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9401
- https://lists.debian.org/debian-lts-announce/2019/03/msg00028.html
- https://security-tracker.debian.org/tracker/CVE-2016-9401
- https://security.gentoo.org/glsa/201701-02
- http://www.openwall.com/lists/oss-security/2016/11/17/5
- http://www.openwall.com/lists/oss-security/2016/11/17/9
- http://rhn.redhat.com/errata/RHSA-2017-0725.html
- https://access.redhat.com/errata/RHSA-2017:1931
- http://www.securityfocus.com/bid/94398
CVSS Scores
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