Risk | Critical |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2014-6271 |
CWE-ID | CWE-77 |
Exploitation vector | Network |
Public exploit | This vulnerability is being exploited in the wild. |
Vulnerable software Subscribe |
Bash Universal components / Libraries / Scripting languages |
Vendor | GNU |
Security Bulletin
This security bulletin contains one critical risk vulnerability.
EUVDB-ID: #VU5295
Risk: Critical
CVSSv3.1: 9.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]
CVE-ID: CVE-2014-6271
CWE-ID:
CWE-77 - Command injection
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to execute arbitrary commands on the target system.
The vulnerability exists due to incorrect parsing of environment variables. A remote attacker can execute arbitrary code on the target system as demonstrated by vectors involving the ForceCommand feature in OpenSSH sshd, the mod_cgi and mod_cgid modules in the Apache HTTP Server, scripts executed by unspecified DHCP clients, and other situations in which setting the environment occurs across a privilege boundary from Bash execution.
Successful exploitation may allow an attacker to gain complete control over vulnerable system.
Exploitation example:
env x='() { :;}; echo vulnerable' bash -c "echo this is a test"
Note: this vulnerability was being actively exploited in the wild.
MitigationUpdate the affected packages.
Bash: 1.14.0 - 4.3
External linkshttp://lists.opensuse.org/opensuse-security-announce/2014-09/msg00034.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.