Vulnerability CVE-2022-25845
Published: 2022-06-10

Description:
The package com.alibaba:fastjson before 1.2.83 are vulnerable to Deserialization of Untrusted Data by bypassing the default autoType shutdown restrictions, which is possible under certain conditions. Exploiting this vulnerability allows attacking remote servers. Workaround: If upgrading is not possible, you can enable [safeMode](https://github.com/alibaba/fastjson/wiki/fastjson_safemode).

Type:

CWE-502

 (Deserialization of Untrusted Data)

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.8/10
6.4/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Alibaba -> Fastjson 

 References:
https://www.ddosi.org/fastjson-poc/
https://github.com/alibaba/fastjson/commit/8f3410f81cbd437f7c459f8868445d50ad301f15
https://github.com/alibaba/fastjson/releases/tag/1.2.83
https://github.com/alibaba/fastjson/commit/35db4adad70c32089542f23c272def1ad920a60d
https://github.com/alibaba/fastjson/wiki/security_update_20220523
https://snyk.io/vuln/SNYK-JAVA-COMALIBABA-2859222
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