Ubuntu update for Bash



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2016-7543
CWE-ID CWE-77
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Ubuntu
Operating systems & Components / Operating system

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Command injection

EUVDB-ID: #VU13104

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-7543

CWE-ID: CWE-77 - Command injection

Exploit availability: No

Description

The vulnerability allows a local attacker to execute arbitrary commands on the target system.

The weakness exists due to insufficient validation of user-supplied input. A local attacker can supply specially crafted SHELLOPTS and PS4 environment variables, inject and execute arbitrary commands with root privileges.

Mitigation

Update the affected packages

Ubuntu 12.04 LTS:
bash 4.2-2ubuntu2.7

Vulnerable software versions

Ubuntu: 12.04

CPE2.3 External links

https://www.ubuntu.com/usn/usn-3294-2/


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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