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CVE-2014-7186

Status Candidate

Overview

The redirection implementation in parse.y in GNU Bash through 4.3 bash43-026 allows remote attackers to cause a denial of service (out-of-bounds array access and application crash) or possibly have unspecified other impact via crafted use of here documents, aka the "redir_stack" issue.

Related Files

HP Security Bulletin HPSBHF03125
Posted Oct 16, 2014
Authored by HP | Site hp.com

HP Security Bulletin HPSBHF03125 - A potential security vulnerability has been identified with HP Next Generation Firewall (NGFW) running Bash Shell. This is the Bash Shell vulnerability known as "ShellShock" which could be exploited remotely to allow execution of code. NOTE: This vulnerability can only be exploited if the attacker already has valid administrative login credentials. Revision 1 of this advisory.

tags | advisory, shell, bash
advisories | CVE-2014-6271, CVE-2014-6277, CVE-2014-6278, CVE-2014-7169, CVE-2014-7186, CVE-2014-7187
SHA-256 | 17f8eddb7283be7cb8ad30c6586d35e371e0c3c28a85f0aa23c2b591cbc0f229
HP Security Bulletin HPSBGN03138
Posted Oct 14, 2014
Authored by HP | Site hp.com

HP Security Bulletin HPSBGN03138 - A potential security vulnerability has been identified with HP Operations Analytics. This is the Bash Shell vulnerability known as "Shellshock" which could be exploited remotely to allow execution of code. This vulnerability allows users that have been granted access to a shell script to escalate privilege and execute unrestricted commands at the same security level as the Bash script. Revision 1 of this advisory.

tags | advisory, shell, bash
advisories | CVE-2014-6271, CVE-2014-6277, CVE-2014-6278, CVE-2014-7169, CVE-2014-7186, CVE-2014-7187
SHA-256 | d2c8a68273b5d908b747dd246281eeb694499ac265b53b3dfe1649f854e5e958
DNS Reverse Lookup Shellshock
Posted Oct 13, 2014
Authored by Dirk-Willem van Gulik, Stephane Chazelas

DNS reverse lookups can be used as a vector of attack for the bash shellshock vulnerability.

tags | exploit, bash
advisories | CVE-2014-3671, CVE-2014-6271, CVE-2014-6277, CVE-2014-6278, CVE-2014-7169, CVE-2014-7186, CVE-2014-7187
SHA-256 | f270585f9a138adfc590970e5d69e843b483a83fdff3980b13aa5bef341cd964
CA Technologies GNU Bash Shellshock
Posted Oct 6, 2014
Authored by Ken Williams | Site www3.ca.com

CA Technologies is investigating multiple GNU Bash vulnerabilities, referred to as the "Shellshock" vulnerabilities, which were publicly disclosed on September 24-27, 2014. CVE identifiers CVE-2014-6271, CVE-2014-7169, CVE-2014-7186, CVE-2014-7187, CVE-2014-6277, and CVE-2014-6278 have been assigned to these vulnerabilities. These vulnerabilities could allow a local or remote attacker to utilize specially crafted input to execute arbitrary commands or code.

tags | advisory, remote, arbitrary, local, vulnerability, bash
advisories | CVE-2014-6271, CVE-2014-6277, CVE-2014-6278, CVE-2014-7169, CVE-2014-7186, CVE-2014-7187
SHA-256 | 3db7713d504c91a2a12a2610e9cd8a98e74b36f790d1df3c77d0e4b33c6098c5
Gentoo Linux Security Advisory 201410-01
Posted Oct 6, 2014
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201410-1 - Multiple parsing flaws in Bash could allow remote attackers to inject code or cause a Denial of Service condition. Versions less than 4.2_p52 are affected.

tags | advisory, remote, denial of service, bash
systems | linux, gentoo
advisories | CVE-2014-6277, CVE-2014-6278, CVE-2014-7186, CVE-2014-7187
SHA-256 | 97311eeb89e6cca85680a723ad6c691b7e5512cffffb554a2af1e30435ca6ef6
Red Hat Security Advisory 2014-1354-01
Posted Oct 3, 2014
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2014-1354-01 - The rhev-hypervisor6 package provides a Red Hat Enterprise Virtualization Hypervisor ISO disk image. The Red Hat Enterprise Virtualization Hypervisor is a dedicated Kernel-based Virtual Machine hypervisor. It includes everything necessary to run and manage virtual machines: a subset of the Red Hat Enterprise Linux operating environment and the Red Hat Enterprise Virtualization Agent. Note: Red Hat Enterprise Virtualization Hypervisor is only available for the Intel 64 and AMD64 architectures with virtualization extensions. A flaw was found in the way Bash evaluated certain specially crafted environment variables. An attacker could use this flaw to override or bypass environment restrictions to execute shell commands. Certain services and applications allow remote unauthenticated attackers to provide environment variables, allowing them to exploit this issue.

tags | advisory, remote, shell, kernel, bash
systems | linux, redhat
advisories | CVE-2014-1568, CVE-2014-6271, CVE-2014-7169, CVE-2014-7186, CVE-2014-7187
SHA-256 | b32eb23a922aaad612775171117381de11c2f5eb28b398659a771dccc74d4d25
VMware Security Advisory 2014-0010
Posted Oct 1, 2014
Authored by VMware | Site vmware.com

VMware Security Advisory 2014-0010 - VMware product updates address Bash security vulnerabilities.

tags | advisory, vulnerability, bash
advisories | CVE-2014-6271, CVE-2014-7169, CVE-2014-7186, CVE-2014-7187
SHA-256 | 35f6ed13d7102c88ca22ea6b869c28a45351e9ff87730aeeba642d5f37e08c62
Ubuntu Security Notice USN-2364-1
Posted Sep 27, 2014
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2364-1 - Florian Weimer and Todd Sabin discovered that the Bash parser incorrectly handled memory. An attacker could possibly use this issue to bypass certain environment restrictions and execute arbitrary code. In addition, this update introduces a hardening measure which adds prefixes and suffixes around environment variable names which contain shell functions. Various other issues were also addressed.

tags | advisory, arbitrary, shell, bash
systems | linux, ubuntu
advisories | CVE-2014-7186, CVE-2014-7187
SHA-256 | ae34017a4da371e3957cf29ab3e4223ae8d46bc125d31af4b5a3d909728c3d3f
Red Hat Security Advisory 2014-1312-01
Posted Sep 27, 2014
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2014-1312-01 - The GNU Bourne Again shell is a shell and command language interpreter compatible with the Bourne shell. Bash is the default shell for Red Hat Enterprise Linux. Shift_JIS, also known as "SJIS", is a character encoding for the Japanese language. This package provides bash support for the Shift_JIS encoding. It was found that the fix for CVE-2014-6271 was incomplete, and Bash still allowed certain characters to be injected into other environments via specially crafted environment variables. An attacker could potentially use this flaw to override or bypass environment restrictions to execute shell commands. Certain services and applications allow remote unauthenticated attackers to provide environment variables, allowing them to exploit this issue.

tags | advisory, remote, shell, bash
systems | linux, redhat
advisories | CVE-2014-7169, CVE-2014-7186, CVE-2014-7187
SHA-256 | 5a5179213e1d426ae806025b6835b14b2c5fc4fe0f9d07f38418998fd760d0e6
Red Hat Security Advisory 2014-1311-01
Posted Sep 27, 2014
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2014-1311-01 - The GNU Bourne Again shell is a shell and command language interpreter compatible with the Bourne shell. Bash is the default shell for Red Hat Enterprise Linux. It was found that the fix for CVE-2014-6271 was incomplete, and Bash still allowed certain characters to be injected into other environments via specially crafted environment variables. An attacker could potentially use this flaw to override or bypass environment restrictions to execute shell commands. Certain services and applications allow remote unauthenticated attackers to provide environment variables, allowing them to exploit this issue.

tags | advisory, remote, shell, bash
systems | linux, redhat
advisories | CVE-2014-7169, CVE-2014-7186, CVE-2014-7187
SHA-256 | 2e88505af0a92784844daf9fe3c6fa50a2e04ca48111c2400b827bb859d59a0a
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