Description of changes:

[3.0-27.0.3]
- Rework env function definition for safety (Florian Weimer) [CVE-2014-7169]

The remote host appears to be running Qmail. A remote attacker can exploit Qmail to execute commands via a specially crafted MAIL FROM header if the remote host has a vulnerable version of Bash. This is due to the fact that Qmail does not properly sanitize input before setting environmental variables.

A negative result from this plugin does not prove conclusively that the remote system is not affected by Shellshock, only that Qmail could not be used to exploit the Shellshock flaw.

The remote OracleVM system is missing necessary patches to address critical security updates :

  - CVE-2014-7169 - bypass patch bug Related: #1146321

  - CVE-2014-7169 - proper 3.2 backport - courtesy of     Florian Weimer Related: #1146321

  - (CVE-2014-7169) Resolves: #1146321

The remote host is running a version of Mac OS X is prior to version 10.10. This update contains several security-related fixes for the following components :

  - 802.1X
  - AFP File Server
  - apache
  - App Sandbox
  - Bash
  - Bluetooth
  - Certificate Trust Policy
  - CFPreferences
  - CoreStorage
  - CUPS
  - Dock
  - fdesetup
  - iCloud Find My Mac
  - IOAcceleratorFamily
  - IOHIDFamily
  - IOKit
  - Kernel
  - LaunchServices
  - LoginWindow
  - Mail
  - MCX Desktop Config Profiles
  - NetFS Client Framework
  - QuickTime
  - Safari
  - Secure Transport
  - Security
  - Security - Code Signing

Note that successful exploitation of the most serious issues can result in arbitrary code execution.

According to its self-reported version number, the version of Cisco TelePresence Video Communication Server is affected by a command injection vulnerability known as Shellshock in its included GNU Bash shell. The vulnerability is due to the processing of trailing strings after function definitions in the values of environment variables.
This allows a remote attacker to execute arbitrary code via environment variable manipulation depending on the configuration of the system. The API over HTTP(S) and/or SSH can therefore be exploited.

An attacker must be authenticated before the system is exposed to this exploit.

The VMware vSphere Replication installed on the remote host is version 5.1.x prior to 5.1.2.2, 5.5.x prior to 5.5.1.3, 5.6.x prior to 5.6.0.2, or 5.8.x prior to 5.8.0.1. It is, therefore, affected by a command injection vulnerability in GNU Bash known as Shellshock, which is due to the processing of trailing strings after function definitions in the values of environment variables. This allows a remote attacker to execute arbitrary code via environment variable manipulation depending on the configuration of the system

The remote ASA Next-Generation Firewall (NGFW) host is missing a security patch. It is, therefore, affected by a command injection vulnerability in GNU Bash known as Shellshock. The vulnerability is due to the processing of trailing strings after function definitions in the values of environment variables. This allows a remote attacker to execute arbitrary code via environment variable manipulation depending on the configuration of the system.

Updated bash packages fix security vulnerability :

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 (CVE-2014-6271).

This vulnerability can be exposed and exploited through several other pieces of software and should be considered highly critical. Please refer to the RedHat Knowledge Base article and blog post for more information.

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 (CVE-2014-7169).

Bash has been updated to version 4.2 patch level 50, which further mitigates ShellShock-type vulnerabilities. Two such issues have already been discovered (CVE-2014-6277, CVE-2014-6278).

See the RedHat article on the backward-incompatible changes introduced by the latest patch, caused by adding prefixes and suffixes to the variable names used for exporting functions. Note that the RedHat article mentions these variable names will have parentheses '()' at the end of their names, however, the latest upstream patch uses two percent signs '%%' at the end instead.

Two other unrelated security issues in the parser have also been fixed in this update (CVE-2014-7186, CVE-2014-7187).

All users and sysadmins are advised to update their bash package immediately.

The remote IBM Storwize V7000 Unified device is running version 1.3.x prior to 1.4.3.5 or 1.5.x prior to 1.5.0.4. It is, therefore, affected by the following vulnerabilities :

  - A command injection vulnerability exists in GNU Bash     known as Shellshock. The vulnerability is due to the     processing of trailing strings after function     definitions in the values of environment variables.
    This allows a remote attacker to execute arbitrary code     via environment variable manipulation depending on the     configuration of the system. (CVE-2014-6271)   
  - An out-of-bounds memory access error exists in GNU Bash     in file parse.y due to evaluating untrusted input during     stacked redirects handling. A remote attacker can exploit     this, via a crafted 'here' document, to execute arbitrary     code or cause a denial of service. (CVE-2014-7186)

  - An off-by-one error exists in GNU Bash in the     read_token_word() function in file parse.y when handling     deeply-nested flow control constructs. A remote attacker     can exploit this, by using deeply nested loops, to     execute arbitrary code or cause a denial of service.
    (CVE-2014-7187)

  - A command injection vulnerability exists in GNU Bash     known as Shellshock. The vulnerability is due to the     processing of trailing strings after function     definitions in the values of environment variables.
    This allows a remote attacker to execute arbitrary code     via environment variable manipulation depending on the     configuration of the system. (CVE-2014-6278) Note that     this vulnerability exists because of an incomplete fix     for CVE-2014-6271, CVE-2014-7169, and CVE-2014-6277.

The remote host is running a version of Gaia OS which is affected by issues related to the SHELLSHOCK set of vulnerabilities in bash. An error in the bash functionality that evaluates specially formatted environment variables passed to it from another environment, which may result in remote code execution.

This build should fix CVE-2014-7169

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The command-line shell 'bash' evaluates environment variables, which allows the injection of characters and might be used to access files on the system in some circumstances (CVE-2014-7169).

Please note that this issue is different from a previously fixed vulnerability tracked under CVE-2014-6271 and it is less serious due to the special, non-default system configuration that is needed to create an exploitable situation.

To remove further exploitation potential we now limit the function-in-environment variable to variables prefixed with BASH_FUNC_ . This hardening feature is work in progress and might be improved in later updates.

Additionaly two more security issues were fixed in bash:
CVE-2014-7186: Nested HERE documents could lead to a crash of bash.

CVE-2014-7187: Nesting of for loops could lead to a crash of bash.

- Replace patches bash-4.2-heredoc-eof-delim.patch and     bash-4.2-parse-exportfunc.patch with the official     upstream patch levels bash42-052 and bash42-053

  - Replace patch bash-4.2-CVE-2014-7187.patch with upstream     patch level bash42-051

  - Make bash-4.2-extra-import-func.patch an optional patch     due instruction

  - Remove and replace patches bash-4.2-CVE-2014-6271.patch     bash-4.2-BSC898604.patch bash-4.2-CVE-2014-7169.patch     with bash upstream patch 48, patch 49, and patch 50

  - Add patch bash-4.2-extra-import-func.patch which is     based on the BSD patch of Christos. As further     enhancements the option import-functions is mentioned in     the manual page and a shopt switch is added to enable     and disable import-functions on the fly

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
77953	Oracle Linux 4 : bash (ELSA-2014-3079)	Nessus	Oracle Linux Local Security Checks	2014/9/29	2023/4/25	critical
77970	Qmail Remote Command Execution via Shellshock	Nessus	SMTP problems	2014/9/29	2022/12/5	critical
78239	OracleVM 2.2 : bash (OVMSA-2014-0024)	Nessus	OracleVM Local Security Checks	2014/10/10	2022/1/31	critical
78550	Mac OS X < 10.10 Multiple Vulnerabilities (POODLE) (Shellshock)	Nessus	MacOS X Local Security Checks	2014/10/17	2024/5/28	critical
78596	Cisco TelePresence Video Communication Server Bash Remote Code Execution (Shellshock)	Nessus	CISCO	2014/10/21	2025/10/3	critical
78771	VMware vSphere Replication Bash Environment Variable Command Injection Vulnerability (VMSA-2014-0010) (Shellshock)	Nessus	Misc.	2014/10/31	2025/10/3	critical
78827	Cisco ASA Next-Generation Firewall GNU Bash Environment Variable Handling Command Injection (cisco-sa-20140926-bash) (Shellshock)	Nessus	CISCO	2014/11/3	2025/10/3	critical
82417	Mandriva Linux Security Advisory : bash (MDVSA-2015:164)	Nessus	Mandriva Local Security Checks	2015/3/30	2025/10/3	critical
85630	IBM Storwize V7000 Unified 1.3.x < 1.4.3.5 / 1.5.x < 1.5.0.4 Multiple Vulnerabilities (Shellshock)	Nessus	Misc.	2015/8/25	2025/10/3	critical
104997	Check Point Gaia Operating Bash Code Injection (sk102673)(SHELLSHOCK)	Nessus	Firewalls	2017/12/4	2025/11/12	critical
77939	Fedora 19 : bash-4.2.48-2.fc19 (2014-11514) (Shellshock)	Nessus	Fedora Local Security Checks	2014/9/29	2022/12/5	critical
77966	openSUSE Security Update : bash (openSUSE-SU-2014:1229-1) (Shellshock)	Nessus	SuSE Local Security Checks	2014/9/29	2022/12/5	critical
78590	openSUSE Security Update : bash (openSUSE-SU-2014:1308-1) (Shellshock)	Nessus	SuSE Local Security Checks	2014/10/21	2022/12/5	critical

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