8.7

CVSS Score

4.0

-

CVSS Score

Basic Information

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CVE-2025-68931

CVE-2025-68931: Jervis has AES CBC Mode Without Authentication

Jervis is a library for Job DSL plugin scripts and shared Jenkins pipeline libraries. Prior to 2.2, AES/CBC/PKCS5Padding lacks authentication, making it vulnerable to padding oracle attacks and ciphertext manipulation. This vulnerability is fixed in 2.2.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2025-68931

CVE-2025-68931:

8.7

CVSS Score

4.0

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
net.gleske:jervis	maven	< 2.2	2.2

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability exists in the use of AES in CBC mode with PKCS5 padding (AES/CBC/PKCS5Padding), which is susceptible to padding oracle attacks. The analysis of the provided patch commit reveals that several methods in the net.gleske.jervis.tools.SecurityIO class were using this insecure encryption method. These functions, encryptWithAES256, decryptWithAES256, encryptWithAES256Base64, and decryptWithAES256Base64, are explicitly deprecated in the patch, with comments indicating their vulnerability. The CipherMap class also contained vulnerable encrypt and decrypt methods that relied on these insecure SecurityIO functions. The patch replaces the underlying encryption mechanism in these methods to use AES in GCM mode (AES/GCM/NoPadding), which provides authenticated encryption and mitigates the padding oracle vulnerability.

Vulnerable functions

Only Mi**o us*rs **n s** t*is s**tion

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WAF Protection Rules

WAF Rule

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Reasoning

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