8.4 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.2 High
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
0.016 Low
EPSS
Percentile
87.0%
Issue Overview:
popd controlled free:
A denial of service flaw was found in the way bash handled popd commands. A poorly written shell script could cause bash to crash resulting in a local denial of service limited to a specific bash session.(CVE-2016-9401)
Arbitrary code execution via malicious hostname:
An arbitrary command injection flaw was found in the way bash processed the hostname value. A malicious DHCP server could use this flaw to execute arbitrary commands on the DHCP client machines running bash under specific circumstances.(CVE-2016-0634)
Specially crafted SHELLOPTS+PS4 variables allows command substitution:
An arbitrary command injection flaw was found in the way bash processed the SHELLOPTS and PS4 environment variables. A local, authenticated attacker could use this flaw to exploit poorly written setuid programs to elevate their privileges under certain circumstances. (CVE-2016-7543)
Affected Packages:
bash
Issue Correction:
Run yum update bash to update your system.
New Packages:
i686:
bash-doc-4.2.46-28.37.amzn1.i686
bash-4.2.46-28.37.amzn1.i686
bash-debuginfo-4.2.46-28.37.amzn1.i686
src:
bash-4.2.46-28.37.amzn1.src
x86_64:
bash-debuginfo-4.2.46-28.37.amzn1.x86_64
bash-4.2.46-28.37.amzn1.x86_64
bash-doc-4.2.46-28.37.amzn1.x86_64
Red Hat: CVE-2016-0634, CVE-2016-7543, CVE-2016-9401
Mitre: CVE-2016-0634, CVE-2016-7543, CVE-2016-9401
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Amazon Linux | 1 | i686 | bash-doc | < 4.2.46-28.37.amzn1 | bash-doc-4.2.46-28.37.amzn1.i686.rpm |
Amazon Linux | 1 | i686 | bash | < 4.2.46-28.37.amzn1 | bash-4.2.46-28.37.amzn1.i686.rpm |
Amazon Linux | 1 | i686 | bash-debuginfo | < 4.2.46-28.37.amzn1 | bash-debuginfo-4.2.46-28.37.amzn1.i686.rpm |
Amazon Linux | 1 | x86_64 | bash-debuginfo | < 4.2.46-28.37.amzn1 | bash-debuginfo-4.2.46-28.37.amzn1.x86_64.rpm |
Amazon Linux | 1 | x86_64 | bash | < 4.2.46-28.37.amzn1 | bash-4.2.46-28.37.amzn1.x86_64.rpm |
Amazon Linux | 1 | x86_64 | bash-doc | < 4.2.46-28.37.amzn1 | bash-doc-4.2.46-28.37.amzn1.x86_64.rpm |
8.4 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.2 High
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
0.016 Low
EPSS
Percentile
87.0%