Multiple vulnerabilities in ImpressCMS
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2021-26600 CVE-2021-26601 CVE-2021-26598 |
| CWE-ID | CWE-287 CWE-22 CWE-284 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #3 is available. |
| Vulnerable software Subscribe |
ImpressCMS Web applications / CMS |
| Vendor | The ImpressCMS Project |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Improper Authentication
EUVDB-ID: #VU61537
Risk: High
CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-26600
CWE-ID:
CWE-287 - Improper Authentication
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error in when processing authentication requests within the "/plugins/preloads/autologin.php" script. A remote attacker can bypass authentication process and gain unauthorized access to the application.
MitigationInstall updates from vendor's website.
Vulnerable software versionsImpressCMS: 1.0.0 - 1.4.2
External linkshttp://karmainsecurity.com/KIS-2022-01
http://hackerone.com/reports/1081986
Q & 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.
2) Path traversal
EUVDB-ID: #VU61536
Risk: Low
CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-26601
CWE-ID:
CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Exploit availability: No
DescriptionThe vulnerability allows a remote user to delete arbitrary files on the system.
The vulnerability exists due to input validation error when processing directory traversal sequences in "/libraries/image-editor/image-edit.php". A remote authenticate user can send a specially crafted HTTP request and delete arbitrary files on the system.
MitigationInstall update from vendor's website.
Vulnerable software versionsImpressCMS: 1.0.0 - 1.4.2
External linkshttp://karmainsecurity.com/KIS-2022-02
http://hackerone.com/reports/1081878
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Improper access control
EUVDB-ID: #VU61535
Risk: Medium
CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C]
CVE-ID: CVE-2021-26598
CWE-ID:
CWE-284 - Improper Access Control
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions within "/include/findusers.php" file. A remote attacker can bypass implemented security restrictions and obtain sensitive information about application users.
Install updates from vendor's website.
Vulnerable software versionsImpressCMS: 1.0.0 - 1.4.2
External linkshttp://karmainsecurity.com/KIS-2022-03
http://hackerone.com/reports/1081137
Q & 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.
