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OVAL Definitions
>
OVAL Definition Details
Id
oval:com.altx-soft.nix:def:111255
[Rus]
Version
1
Class
patch
ALTXid
297632
Language
English
Severity
High
Title
MGASA-2016-0393 -- security update for bash
Description
A vulnerability was found in a way bash expands the $HOSTNAME. Injecting
the hostname with malicious code would cause it to run each time bash
expanded \h in the prompt string (CVE-2016-0634).
Shells running as root inherited PS4 from the environment, allowing PS4
expansion performing command substitution. Local attacker could gain
arbitrary code execution via bogus setuid binaries using system()/popen()
by specially crafting SHELLOPTS+PS4 environment variables (CVE-2016-7543)
Family
unix
Platform
Mageia 5
Product
bash
Reference
VENDOR: MGASA-2016-0393
VENDOR: MGASA-2016-0393
Id:
MGASA-2016-0393
Reference:
https://advisories.mageia.org/MGASA-2016-0393.html
CVE: CVE-2016-0634
CVE: CVE-2016-0634
Id:
CVE-2016-0634
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0634
Comment
: 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.
CVSSv2 Score:
6
Access vector:
NETWORK
Access complexity:
MEDIUM
Authentication:
SINGLE
Confidentiality impact:
PARTIAL
Integrity impact:
PARTIAL
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:N/AC:M/Au:S/C:P/I:P/A:P
CVSSv3 Score:
7.5
Attack vector:
NETWORK
Attack complexity:
HIGH
Privileges required:
LOW
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
HIGH
Integrity impact:
HIGH
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE:
78 (Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'))
References:
https://bugzilla.redhat.com/show_bug.cgi?id=1377613 (CONFIRM)
92999 (BID)
[oss-security] 20161010 Re: Re: CVE-2016-0634 -- bash prompt expanding $HOSTNAME (MLIST)
[oss-security] 20161010 RE: Re: CVE-2016-0634 -- bash prompt expanding $HOSTNAME (MLIST)
[oss-security] 20161007 Re: Re: CVE-2016-0634 -- bash prompt expanding $HOSTNAME (MLIST)
[oss-security] 20160929 Re: Re: CVE-2016-0634 -- bash prompt expanding $HOSTNAME (MLIST)
[oss-security] 20160927 Re: Re: CVE-2016-0634 -- bash prompt expanding $HOSTNAME (MLIST)
[oss-security] 20160920 Re: CVE-2016-0634 -- bash prompt expanding $HOSTNAME (MLIST)
[oss-security] 20160919 Re: CVE-2016-0634 -- bash prompt expanding $HOSTNAME (MLIST)
[oss-security] 20160918 Re: CVE-2016-0634 -- bash prompt expanding $HOSTNAME (MLIST)
[oss-security] 20160916 CVE-2016-0634 -- bash prompt expanding $HOSTNAME (MLIST)
[oss-security] 20160916 Re: CVE-2016-0634 -- bash prompt expanding $HOSTNAME (MLIST)
GLSA-201612-39 (GENTOO)
RHSA-2017:1931 (REDHAT)
RHSA-2017:0725 (REDHAT)
CVE: CVE-2016-7543
CVE: CVE-2016-7543
Id:
CVE-2016-7543
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7543
Comment
: Bash before 4.4 allows local users to execute arbitrary commands with root privileges via crafted SHELLOPTS and PS4 environment variables.
CVSSv2 Score:
7.2
Access vector:
LOCAL
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
COMPLETE
Integrity impact:
COMPLETE
Availability impact:
COMPLETE
CVSSv2 Vector:
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSSv3 Score:
8.4
Attack vector:
LOCAL
Attack complexity:
LOW
Privileges required:
NONE
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
HIGH
Integrity impact:
HIGH
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE:
20 (Improper Input Validation)
References:
GLSA-201701-02 (GENTOO)
[bug-bash] 20160916 Bash-4.4 Release available (MLIST)
93183 (BID)
[oss-security] 20160926 CVE-2016-7543 -- bash SHELLOPTS+PS4 (MLIST)
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05388115 (CONFIRM)
1037812 (SECTRACK)
RHSA-2017:1931 (REDHAT)
RHSA-2017:0725 (REDHAT)
FEDORA-2016-5a54fb4784 ()
FEDORA-2016-2c4b5ad64e ()
FEDORA-2016-f84391516d ()
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