Remote code execution in Mercari Android app
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-5604 |
| CWE-ID | CWE-749 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software Subscribe |
Mercari Mobile applications / Apps for mobile phones |
| Vendor | mercari |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Exposed dangerous method or function
EUVDB-ID: #VU29578
Risk: Medium
CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2020-5604
CWE-ID:
CWE-749 - Exposed Dangerous Method or Function
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary method of the Java object.
The vuůnerability exists due to inadequate restrictions on "addJavascriptInterface" of WebView class. A remote attacker can perform a man-in-the-middle attack, use Java Reflection API of JavaScript code for on the WebView and execute an arbitrary method of Java object.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMercari: before 3.52.0
External linkshttp://jvn.jp/en/jp/JVN93167107/index.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to perform certain actions on the device.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
