OS Command Injection Affecting bash-doc package, versions <0:4.2.46-28.37.amzn1
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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- published27 Sept 2021
- disclosed28 Aug 2017
Introduced: 28 Aug 2017
CVE-2016-0634 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2018.03 bash-doc to version 0:4.2.46-28.37.amzn1 or higher.
This issue was patched in ALAS-2017-878.
NVD Description
Note: Versions mentioned in the description apply only to the upstream bash-doc package and not the bash-doc package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.
The expansion of '\h' in the prompt string in bash 4.3 allows remote authenticated users to execute arbitrary code via shell metacharacters placed in 'hostname' of a machine.
References
- http://www.securityfocus.com/bid/92999
- https://bugzilla.redhat.com/show_bug.cgi?id=1377613
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0634
- https://security.gentoo.org/glsa/201612-39
- http://www.openwall.com/lists/oss-security/2016/09/16/12
- http://www.openwall.com/lists/oss-security/2016/09/16/8
- http://www.openwall.com/lists/oss-security/2016/09/18/11
- http://www.openwall.com/lists/oss-security/2016/09/19/7
- http://www.openwall.com/lists/oss-security/2016/09/20/1
- http://www.openwall.com/lists/oss-security/2016/09/27/9
- http://www.openwall.com/lists/oss-security/2016/09/29/27
- http://www.openwall.com/lists/oss-security/2016/10/07/6
- http://www.openwall.com/lists/oss-security/2016/10/10/3
- http://www.openwall.com/lists/oss-security/2016/10/10/4
- http://rhn.redhat.com/errata/RHSA-2017-0725.html
- https://access.redhat.com/errata/RHSA-2017:1931