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Bash vulnerabilities

Description

Bernd Dietzel discovered that Bash incorrectly expanded the hostname when displaying the prompt. If a remote attacker were able to modify a hostname, this flaw could be exploited to execute arbitrary code. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-0634) It was discovered that Bash incorrectly handled the SHELLOPTS and PS4 environment variables. A local attacker could use this issue to execute arbitrary code with root privileges. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-7543) It was discovered that Bash incorrectly handled the popd command. A remote attacker could possibly use this issue to bypass restricted shells. (CVE-2016-9401) It was discovered that Bash incorrectly handled path autocompletion. A local attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 17.04. (CVE-2017-5932)


Affected Package


OS OS Version Package Name Package Version
Ubuntu 17.04 bash 4.4-2ubuntu1.1
Ubuntu 16.10 bash 4.3-15ubuntu1.1
Ubuntu 16.04 bash 4.3-14ubuntu1.2
Ubuntu 16.04 bash-builtins 4.3-14ubuntu1.2
Ubuntu 16.04 bash-dbgsym 4.3-14ubuntu1.2
Ubuntu 16.04 bash-doc 4.3-14ubuntu1.2
Ubuntu 16.04 bash-static 4.3-14ubuntu1.2
Ubuntu 16.04 bash-static-dbgsym 4.3-14ubuntu1.2
Ubuntu 14.04 bash 4.3-7ubuntu1.7
Ubuntu 14.04 bash-builtins 4.3-7ubuntu1.7
Ubuntu 14.04 bash-doc 4.3-7ubuntu1.7
Ubuntu 14.04 bash-static 4.3-7ubuntu1.7

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