Risk | High |
Patch available | YES |
Number of vulnerabilities | 3 |
CVE-ID | CVE-2020-11891 CVE-2020-11890 CVE-2020-11889 |
CWE-ID | CWE-284 CWE-20 |
Exploitation vector | Network |
Public exploit | Public exploit code for vulnerability #2 is available. |
Vulnerable software Subscribe |
Joomla! Web applications / CMS |
Vendor | Joomla! |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
EUVDB-ID: #VU27079
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-11891
CWE-ID:
CWE-284 - Improper Access Control
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions in "com_users" access level editing function. A remote attacker can bypass implemented security restrictions and edit the usergroups.
MitigationInstall updates from vendor's website.
Vulnerable software versionsJoomla!: 3.8.8 - 3.9.16
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU27078
Risk: Medium
CVSSv3.1: 6.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C]
CVE-ID: CVE-2020-11890
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to insufficient validation of user-supplied input in the usergroup table class. A remote attacker can pass specially crafted input to the application, leading to a broken ACL configuration.
MitigationInstall updates from vendor's website.
Vulnerable software versionsJoomla!: 2.5.0 - 3.9.16
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
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.
EUVDB-ID: #VU27077
Risk: High
CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-11889
CWE-ID:
CWE-284 - Improper Access Control
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions in "com_users" access level deletion function. A remote attacker can bypass implemented security restrictions and delete the usergroups.
MitigationInstall updates from vendor's website.
Vulnerable software versionsJoomla!: 2.5.0 - 3.9.16
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.