Vulnerability identifier: #VU39135

Vulnerability risk: High

CVSSv3.1: 8.6 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-6903

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
lshell
Other software / Other software solutions

Vendor: ghantoos (Ignace Mouzannar)

Description

The vulnerability allows a remote authenticated user to execute arbitrary code.

lshell 0.9.16 allows remote authenticated users to break out of a limited shell and execute arbitrary commands.

Mitigation
Install update from vendor's website.

Vulnerable software versions

lshell: 0.9.16

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External links
http://www.openwall.com/lists/oss-security/2016/08/22/17
http://www.securityfocus.com/bid/92591
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=834946
http://bugzilla.redhat.com/show_bug.cgi?id=1369345
http://github.com/ghantoos/lshell/commit/e72dfcd1f258193f9aaea3591ecbdaed207661a0
http://github.com/ghantoos/lshell/issues/149
http://github.com/ghantoos/lshell/pull/153/commits/a686f71732a3d0f16df52ef46ab8a49ee0083c68

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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