VDB-128289 · CVE-2018-20193 · BID 106289

Pulse Secure Access SA 4.2/5.1R5 update.cgi access control

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.0	$0-$5k	0.00

A vulnerability, which was classified as problematic, was found in Pulse Secure Access SA 4.2/5.1R5. This affects an unknown function of the file /dana-admin/user/update.cgi. The manipulation with an unknown input leads to a privilege escalation vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Certain Secure Access SA Series SSL VPN products (originally developed by Juniper Networks but now sold and supported by Pulse Secure, LLC) allow privilege escalation, as demonstrated by Secure Access SSL VPN SA-4000 5.1R5 (build 9627) 4.2 Release (build 7631). This occurs because appropriate controls are not performed. Specifically, it is possible for a readonly user to change the administrator user password by making a local copy of the /dana-admin/user/update.cgi page, changing the "user" value, and saving the changes.

The bug was discovered 12/18/2018. The weakness was shared 12/21/2018 by Rafael Pedrero as not defined mailinglist post (Full-Disclosure). The advisory is shared at seclists.org. This vulnerability is uniquely identified as CVE-2018-20193 since 12/17/2018. An attack has to be approached locally. The successful exploitation requires a authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 3 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Productinfo

Vendor

Pulse

Name

Secure Access SA

CPE 2.3info

CPE 2.2info

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 7.0

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
🔍	🔍	🔍	🔍	🔍	🔍
🔍	🔍	🔍	🔍	🔍	🔍
🔍	🔍	🔍	🔍	🔍	🔍

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Privilege escalation
CWE: CWE-264
ATT&CK: T1068

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/17/2018 🔍
12/18/2018 +1 days 🔍
12/18/2018 +0 days 🔍
12/21/2018 +3 days 🔍
12/21/2018 +0 days 🔍
12/22/2018 +1 days 🔍
04/23/2020 +488 days 🔍

Sourcesinfo

Advisory: seclists.org
Researcher: Rafael Pedrero
Status: Not defined

CVE: CVE-2018-20193 (🔍)
SecurityFocus: 106289 - Pulse Secure SSL VPN CVE-2018-20193 Privilege Escalation Vulnerability

Entryinfo

Created: 12/22/2018 10:07 AM
Updated: 04/23/2020 11:38 AM
Changes: (4) vulnerability_discoverydate advisory_person_name source_securityfocus_date source_securityfocus_class
Complete: 🔍