Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2021-21349— A Server-Side Forgery Request can be activated unmarshalling with XStream to access data streams from an arbitrary URL referencing a resource in an intranet or the local host

Quick assessment

Affected
x-stream xstream
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

XStream是XStream（Xstream）团队的一个轻量级的、简单易用的开源Java类库，它主要用于将对象序列化成XML（JSON）或反序列化为对象。 XStream 1.4.16 之前版本存在代码问题漏洞，该漏洞源于WEB应用未充分验证请求是否来自可信用户。攻击者可利用该漏洞通过受影响客户端向服务器发送非预期的请求。

CVSS 6.1 · Medium EPSS 46.83% · P99

Possible ATT&CK Techniques 1 AI

T1041 · Exfiltration Over C2 Channel

Affected Version Matrix 1

VendorProduct Version RangeStatus
x-stream xstream < 1.4.16 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2021-21349

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
A Server-Side Forgery Request can be activated unmarshalling with XStream to access data streams from an arbitrary URL referencing a resource in an intranet or the local host
Source: CVE Program / CVE List V5
Vulnerability Description
XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability which may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.16.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
XStream 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
XStream是XStream（Xstream）团队的一个轻量级的、简单易用的开源Java类库，它主要用于将对象序列化成XML（JSON）或反序列化为对象。 XStream 1.4.16 之前版本存在代码问题漏洞，该漏洞源于WEB应用未充分验证请求是否来自可信用户。攻击者可利用该漏洞通过受影响客户端向服务器发送非预期的请求。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
x-stream xstream < 1.4.16 -

II. Public POCs for CVE-2021-21349

# POC Description Source Link Shenlong Link
1 XStream SSRF CVE-2021-21349 https://github.com/s-index/CVE-2021-21349 POC Details
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2021-21349

请登录查看更多情报信息。

Vendor Advisories for CVE-2021-21349 (6)

Mailing List Discussions for CVE-2021-21349 (6)

Security Blog Posts for CVE-2021-21349 (2)

Same Patch Batch · x-stream · 2021-03-22 · 11 CVEs total

CVE-2021-21341 7.5 HIGH XStream can cause a Denial of Service
CVE-2021-21346 6.1 MEDIUM XStream is vulnerable to an Arbitrary Code Execution attack
CVE-2021-21347 6.1 MEDIUM XStream is vulnerable to an Arbitrary Code Execution attack
CVE-2021-21345 5.8 MEDIUM XStream is vulnerable to a Remote Command Execution attack
CVE-2021-21351 5.4 MEDIUM XStream is vulnerable to an Arbitrary Code Execution attack
CVE-2021-21342 5.3 MEDIUM A Server-Side Forgery Request can be activated unmarshalling with XStream to access data s
CVE-2021-21343 5.3 MEDIUM XStream is vulnerable to an Arbitrary File Deletion on the local host when unmarshalling a
CVE-2021-21344 5.3 MEDIUM XStream is vulnerable to an Arbitrary Code Execution attack
CVE-2021-21348 5.3 MEDIUM XStream is vulnerable to an attack using Regular Expression for a Denial of Service (ReDos
CVE-2021-21350 5.3 MEDIUM XStream is vulnerable to an Arbitrary Code Execution attack

IV. Related Vulnerabilities

Same product: xstream
Same vendor: x-stream
Same weakness: CWE-502

V. Comments for CVE-2021-21349

No comments yet

Leave a comment