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CVE-2016-0634

Status Candidate

Overview

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.

Related Files

Slackware Security Advisory - bash Updates
Posted Sep 12, 2017
Authored by Slackware Security Team | Site slackware.com

Slackware Security Advisory - New bash packages are available for Slackware 13.1, 13.37, 14.0, 14.1, and 14.2 to fix security issues.

tags | advisory, bash
systems | linux, slackware
advisories | CVE-2016-0634, CVE-2016-7543
MD5 | 37c29c06a445182064da2a64eea8733b
Red Hat Security Advisory 2017-1931-01
Posted Aug 2, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-1931-01 - The bash packages provide Bash, which is the default shell for Red Hat Enterprise Linux. Security Fix: 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. 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.

tags | advisory, arbitrary, shell, local, bash
systems | linux, redhat
advisories | CVE-2016-0634, CVE-2016-7543, CVE-2016-9401
MD5 | 7c8a3a75d795ab44095ecd3d7c25724d
Ubuntu Security Notice USN-3294-1
Posted May 18, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3294-1 - 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. 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. Various other issues were also addressed.

tags | advisory, remote, arbitrary, local, root, bash
systems | linux, ubuntu
advisories | CVE-2016-0634, CVE-2016-7543, CVE-2016-9401, CVE-2017-5932
MD5 | 54aa1760f2b12db64932bc9acc879cd5
Red Hat Security Advisory 2017-0725-01
Posted Mar 21, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-0725-01 - The bash packages provide Bash, which is the default shell for Red Hat Enterprise Linux. Security Fix: 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. 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.

tags | advisory, arbitrary, shell, local, bash
systems | linux, redhat
advisories | CVE-2016-0634, CVE-2016-7543, CVE-2016-9401
MD5 | 6b238477973e67226f55cc4cd86b4c4a
Gentoo Linux Security Advisory 201612-39
Posted Dec 13, 2016
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201612-39 - A vulnerability in Bash could potentially lead to arbitrary code execution. Versions less than 4.3_p46-r1 are affected.

tags | advisory, arbitrary, code execution, bash
systems | linux, gentoo
advisories | CVE-2016-0634
MD5 | b76fd40fb294e8ef2a0241445af1b899
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