CVE-2016-0634

Description

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.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 2.96% Top 15%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory gentoo.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.openwall.com/lists/oss-security/2016/09/27/9 third party advisory mailing list
http://www.openwall.com/lists/oss-security/2016/09/16/8 patch mailing list third party advisory
http://rhn.redhat.com/errata/RHSA-2017-0725.html vendor advisory
http://www.openwall.com/lists/oss-security/2016/09/29/27 third party advisory mailing list
http://www.openwall.com/lists/oss-security/2016/09/20/1 third party advisory mailing list
http://www.securityfocus.com/bid/92999 third party advisory vdb entry
https://access.redhat.com/errata/RHSA-2017:1931 vendor advisory
http://www.openwall.com/lists/oss-security/2016/10/07/6 third party advisory mailing list
http://www.openwall.com/lists/oss-security/2016/09/18/11 third party advisory mailing list
http://www.openwall.com/lists/oss-security/2016/09/19/7 third party advisory mailing list
http://www.openwall.com/lists/oss-security/2016/10/10/4 third party advisory mailing list
http://www.openwall.com/lists/oss-security/2016/09/16/12 third party advisory mailing list
https://security.gentoo.org/glsa/201612-39 third party advisory vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1377613 patch vdb entry third party advisory issue tracking
http://www.openwall.com/lists/oss-security/2016/10/10/3 third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2016-0634?
CVE-2016-0634 has been scored as a high severity vulnerability.
How to fix CVE-2016-0634?
To fix CVE-2016-0634, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-0634 being actively exploited in the wild?
It is possible that CVE-2016-0634 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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