9.8

CVSS Score

3.0

-

CVSS Score

Basic Information

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CVE-2017-1000353

CVE-2017-1000353: Deserialization of Untrusted Data in Jenkins

Jenkins versions 2.56 and earlier as well as 2.46.1 LTS and earlier are vulnerable to an unauthenticated remote code execution. An unauthenticated remote code execution vulnerability allowed attackers to transfer a serialized Java SignedObject object to the Jenkins CLI, that would be deserialized using a new ObjectInputStream, bypassing the existing blacklist-based protection mechanism. We're fixing this issue by adding SignedObject to the blacklist. We're also backporting the new HTTP CLI protocol from Jenkins 2.54 to LTS 2.46.2, and deprecating the remoting-based (i.e. Java serialization) CLI protocol, disabling it by default.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2017-1000353

CVE-2017-1000353:

9.8

CVSS Score

3.0

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
org.jenkins-ci.main:jenkins-core	maven	>= 2.50, <= 2.56	2.57
org.jenkins-ci.main:jenkins-core	maven	<= 2.46.1	2.46.2

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability arises from the deserialization of untrusted data via the Jenkins CLI's remoting protocol. The provided commit diff shows that SignedObject was added to the deserialization blacklist in Jenkins.java, indicating it was previously missing. The exploit (CVE-2017-1000353) involves sending a serialized SignedObject, which triggers code execution during deserialization. The core issue is the absence of SignedObject in the blacklist, allowing ObjectInputStream.readObject to deserialize it. While the exact function names in the CLI handling code are not explicitly provided, the use of ObjectInputStream in the deserialization pathway (common in Java remoting) and the blacklist update confirm this entry point as the vulnerable component.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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