Remote code execution in Yii framework



Published: 2020-09-24
Risk Critical
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-15148
CWE-ID CWE-502
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
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Yii
Web applications / CMS

Vendor Yii Software

Security Bulletin

This security bulletin contains one critical risk vulnerability.

1) Deserialization of Untrusted Data

EUVDB-ID: #VU47003

Risk: Critical

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-15148

CWE-ID: CWE-502 - Deserialization of Untrusted Data

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data on arbitrary user input in "framework/db/BatchQueryResult.php" file. A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Yii: 2.0.0 - 2.0.37

External links

http://github.com/yiisoft/yii2/commit/9abccb96d7c5ddb569f92d1a748f50ee9b3e2b99
http://github.com/yiisoft/yii2/security/advisories/GHSA-699q-wcff-g9mj


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.



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