Risk | High |
Patch available | YES |
Number of vulnerabilities | 2 |
CVE-ID | CVE-2021-20790 CVE-2021-20791 |
CWE-ID | CWE-94 CWE-284 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
RevoWorks Browser Client/Desktop applications / Web browsers |
Vendor | J’s Communication Co |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
EUVDB-ID: #VU56438
Risk: High
CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-20790
CWE-ID:
CWE-94 - Improper Control of Generation of Code ('Code Injection')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation. A remote attacker can execute arbitrary code on the web browser of the user which is running under the isolated environment.
MitigationInstall updates from vendor's website.
Vulnerable software versionsRevoWorks Browser: 2.1.197 - 2.1.230
External linkshttp://jvn.jp/en/jp/JVN81658818/index.html
http://jscom.jp/news-20210910_2/
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 visit a specially crafted website.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU56439
Risk: Low
CVSSv3.1: 4.5 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-20791
CWE-ID:
CWE-284 - Improper Access Control
Exploit availability: No
DescriptionThe vulnerability allows a local user to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions. A local user can bypass implemented security restrictions and alter settings of the web browser.
MitigationInstall updates from vendor's website.
Vulnerable software versionsRevoWorks Browser: 2.1.197 - 2.1.230
External linkshttp://jvn.jp/en/jp/JVN81658818/index.html
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to visit a specially crafted website.
The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.