Multiple vulnerabilities in SilverStripe Framework



Published: 2021-06-11
Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2020-26138
CVE-2020-25817
CWE-ID CWE-20
CWE-611
Exploitation vector Network
Public exploit N/A
Vulnerable software
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SilverStripe Framework
Server applications / Frameworks for developing and running applications

Vendor SilverStripe

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU54062

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-26138

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to a FormField with square brackets in the field name skips validation. 

Mitigation

Install updates from vendor's website.

Vulnerable software versions

SilverStripe Framework: 3.0.0 - 4.7.3

External links

http://www.silverstripe.org/download/security-releases/
http://www.silverstripe.org/blog/tag/release
http://forum.silverstripe.org/c/releases
http://www.silverstripe.org/download/security-releases/cve-2020-26138


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) XML External Entity injection

EUVDB-ID: #VU54063

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-25817

CWE-ID: CWE-611 - Improper Restriction of XML External Entity Reference ('XXE')

Exploit availability: No

Description

The vulnerability allows a remote user to gain access to sensitive information.

The vulnerability exists due to insufficient validation of user-supplied XML input in CSSContentParser. A remote administrator can pass a specially crafted XML code to the affected application and view contents of arbitrary files on the system or initiate requests to external systems.

Successful exploitation of the vulnerability may allow an attacker to view contents of arbitrary file on the server or perform network scanning of internal and external infrastructure.

Mitigation

Install update from vendor's website.

Vulnerable software versions

SilverStripe Framework: 4.0.0 - 4.7.3

External links

http://www.silverstripe.org/download/security-releases/
http://www.silverstripe.org/blog/tag/release
http://forum.silverstripe.org/c/releases
http://www.silverstripe.org/download/security-releases/cve-2020-25817


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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