ZyXEL ATP500/USG40/USG1900/ZyWALL310/ZyWALL1100 /?mobile=1 mp_idx Reflected cross site scripting
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
5.0 | $0-$5k | 0.00 |
A vulnerability was found in ZyXEL ATP500, USG40, USG1900, ZyWALL310 and ZyWALL1100 (Firewall Software). It has been declared as problematic. Affected by this vulnerability is an unknown part of the file /?mobile=1. The manipulation of the argument mp_idx
with the input value %22;alert(1);//
leads to a cross site scripting vulnerability (Reflected). The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity.
The bug was discovered 02/06/2019. The weakness was presented 04/15/2019 by Aaron Bishop as CVE-2019-9955 Refelected XSS on Zyxel Login page as confirmed advisory (Website). It is possible to read the advisory at securitymetrics.com. The public release was coordinated in cooperation with ZyXEL. This vulnerability is known as CVE-2019-9955 since 03/23/2019. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details and also a public exploit are known. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.
A public exploit has been developed by Aaron Bishop in URL/Javascript and been published immediately after the advisory. It is possible to download the exploit at securitymetrics.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 18 days. During that time the estimated underground price was around $0-$5k.
Applying a patch is able to eliminate this problem. A possible mitigation has been published even before and not after the disclosure of the vulnerability.
Additional details are provided at seclists.org.
Product
Type
Vendor
Name
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.2VulDB Meta Temp Score: 5.0
VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 6.1
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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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: 🔍
Exploiting
Name: ReflectedClass: Cross site scripting / Reflected
CWE: CWE-79 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Yes
Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Aaron Bishop
Programming Language: 🔍
Download: 🔍
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Exploit-DB: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: PatchStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exploit Delay Time: 🔍
Timeline
02/06/2019 🔍02/06/2019 🔍
02/24/2019 🔍
02/24/2019 🔍
03/23/2019 🔍
04/15/2019 🔍
04/15/2019 🔍
04/16/2019 🔍
08/29/2023 🔍
Sources
Vendor: zyxel.comAdvisory: CVE-2019-9955 Refelected XSS on Zyxel Login page
Researcher: Aaron Bishop
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍
CVE: CVE-2019-9955 (🔍)
scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍
Entry
Created: 04/16/2019 20:22Updated: 08/29/2023 11:39
Changes: 04/16/2019 20:22 (73), 05/30/2020 06:39 (2), 08/29/2023 11:39 (5)
Complete: 🔍
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