CVE-2025-68701

import javax.crypto.Cipher; import javax.crypto.spec.IvParameterSpec; import javax.crypto.spec.SecretKeySpec; import java.security.MessageDigest; public class JervisDeterministicIV { // Vulnerable: Deterministic IV derivation from passphrase public static byte[] vulnerableEncrypt(String plaintext, String passphrase) throws Exception { // Derive key from passphrase MessageDigest digest = MessageDigest.getInstance("SHA-256"); byte[] key = digest.digest(passphrase.getBytes()); // VULNERABLE: Deterministic IV from passphrase MessageDigest md = MessageDigest.getInstance("MD5"); byte[] iv = md.digest(passphrase.getBytes()); // Same passphrase = same IV! SecretKeySpec keySpec = new SecretKeySpec(key, "AES"); IvParameterSpec ivSpec = new IvParameterSpec(iv); Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); cipher.init(Cipher.ENCRYPT_MODE, keySpec, ivSpec); return cipher.doFinal(plaintext.getBytes()); } // Secure: Random IV generation public static byte[] secureEncrypt(String plaintext, String passphrase) throws Exception { MessageDigest digest = MessageDigest.getInstance("SHA-256"); byte[] key = digest.digest(passphrase.getBytes()); // SECURE: Generate random IV byte[] iv = new byte[16]; new java.security.SecureRandom().nextBytes(iv); SecretKeySpec keySpec = new SecretKeySpec(key, "AES"); IvParameterSpec ivSpec = new IvParameterSpec(iv); Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); cipher.init(Cipher.ENCRYPT_MODE, keySpec, ivSpec); // Prepend IV to ciphertext for storage/transmission byte[] ciphertext = cipher.doFinal(plaintext.getBytes()); byte[] combined = new byte[iv.length + ciphertext.length]; System.arraycopy(iv, 0, combined, 0, iv.length); System.arraycopy(ciphertext, 0, combined, iv.length, ciphertext.length); return combined; } public static void main(String[] args) throws Exception { String passphrase = "secret123"; String plaintext = "API_KEY=abc123"; // Demonstrating deterministic IV vulnerability byte[] enc1 = vulnerableEncrypt(plaintext, passphrase); byte[] enc2 = vulnerableEncrypt(plaintext, passphrase); System.out.println("Same encryption produces same output: " + MessageDigest.isEqual(enc1, enc2)); // Will be true - VULNERABLE! } }

{"cve": {"id": "CVE-2025-68701", "sourceIdentifier": "[email protected]", "published": "2026-01-13T20:16:07.237", "lastModified": "2026-01-20T17:12:33.680", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Jervis is a library for Job DSL plugin scripts and shared Jenkins pipeline libraries. Prior to 2.2, Jervis uses deterministic AES IV derivation from a passphrase. This vulnerability is fixed in 2.2."}, {"lang": "es", "value": "Jervis es una biblioteca para scripts del plugin Job DSL y bibliotecas compartidas de pipeline de Jenkins. Antes de la versión 2.2, Jervis utiliza derivación determinista de IV AES a partir de una frase de contraseña. Esta vulnerabilidad está corregida en la versión 2.2."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 8.7, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-327"}, {"lang": "en", "value": "CWE-340"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:samrocketman:jervis:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.2", "matchCriteriaId": "F1205448-6074-4B8A-B941-572D3D44F9E1"}]}]}], "references": [{"url": "https://github.com/samrocketman/jervis/commit/c3981ff71de7b0f767dfe7b37a2372cb2a51974a", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/samrocketman/jervis/security/advisories/GHSA-crxp-chh4-9ghp", "source": "[email protected]", "tags": ["Patch", "Vendor Advisory"]}]}}