Vulnerability-Lookup

CNVD-2022-51879

Vulnerability from cnvd - Published: 2022-07-15

Title

Fastjson代码执行漏洞

Description

Fastjson是一款基于Java的快速JSON解析器/生成器。 Fastjson 1.2.83之前版本存在安全漏洞，该漏洞源于容易绕过默认的autoType关闭限制来反序列化不受信任的数据，攻击者利用该漏洞导致代码执行。

Severity

中

Patch Name

Fastjson代码执行漏洞的补丁

Patch Description

Fastjson是一款基于Java的快速JSON解析器/生成器。 Fastjson 1.2.83之前版本存在安全漏洞，该漏洞源于容易绕过默认的autoType关闭限制来反序列化不受信任的数据，攻击者利用该漏洞导致代码执行。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://github.com/alibaba/fastjson/wiki/security_update_20220523

Reference

https://cxsecurity.com/cveshow/CVE-2022-25845/

Impacted products

Name
Alibaba Fastjson <1.2.83

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2022-25845"
    }
  },
  "description": "Fastjson\u662f\u4e00\u6b3e\u57fa\u4e8eJava\u7684\u5feb\u901fJSON\u89e3\u6790\u5668/\u751f\u6210\u5668\u3002\n\nFastjson 1.2.83\u4e4b\u524d\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5bb9\u6613\u7ed5\u8fc7\u9ed8\u8ba4\u7684autoType\u5173\u95ed\u9650\u5236\u6765\u53cd\u5e8f\u5217\u5316\u4e0d\u53d7\u4fe1\u4efb\u7684\u6570\u636e\uff0c\u653b\u51fb\u8005\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u4ee3\u7801\u6267\u884c\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://github.com/alibaba/fastjson/wiki/security_update_20220523",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-51879",
  "openTime": "2022-07-15",
  "patchDescription": "Fastjson\u662f\u4e00\u6b3e\u57fa\u4e8eJava\u7684\u5feb\u901fJSON\u89e3\u6790\u5668/\u751f\u6210\u5668\u3002\r\n\r\nFastjson 1.2.83\u4e4b\u524d\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5bb9\u6613\u7ed5\u8fc7\u9ed8\u8ba4\u7684autoType\u5173\u95ed\u9650\u5236\u6765\u53cd\u5e8f\u5217\u5316\u4e0d\u53d7\u4fe1\u4efb\u7684\u6570\u636e\uff0c\u653b\u51fb\u8005\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u4ee3\u7801\u6267\u884c\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Fastjson\u4ee3\u7801\u6267\u884c\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Alibaba Fastjson \u003c1.2.83"
  },
  "referenceLink": "https://cxsecurity.com/cveshow/CVE-2022-25845/",
  "serverity": "\u4e2d",
  "submitTime": "2022-06-14",
  "title": "Fastjson\u4ee3\u7801\u6267\u884c\u6f0f\u6d1e"
}

CVE-2022-25845 (GCVE-0-2022-25845)

Vulnerability from cvelistv5 – Published: 2022-06-10 20:05 – Updated: 2024-09-16 23:36

Title

Deserialization of Untrusted Data

Summary

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).

Severity

8.1 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P

CWE

Deserialization of Untrusted Data

Assigner

snyk mitre root

References

7 references

URL	Tags
https://snyk.io/vuln/SNYK-JAVA-COMALIBABA-2859222	x_refsource_MISC
https://www.ddosi.org/fastjson-poc/	x_refsource_MISC
https://github.com/alibaba/fastjson/commit/8f3410…	x_refsource_MISC
https://github.com/alibaba/fastjson/commit/35db4a…	x_refsource_MISC
https://github.com/alibaba/fastjson/wiki/security…	x_refsource_MISC
https://github.com/alibaba/fastjson/releases/tag/1.2.83	x_refsource_MISC
https://www.oracle.com/security-alerts/cpujul2022.html	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
n/a	com.alibaba:fastjson	Affected: unspecified , < 1.2.83 (custom)

Date Public

2022-06-10 00:00

Credits

Unknown

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.