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

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

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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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.




CPE 2.3info

CPE 2.2info


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: 🔍



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

NVD Base Score: 🔍


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: 🔍


Threat Intelligenceinfo

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


Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍


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 🔍


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


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: 🔍


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