CVE-2021-32738
Assigner: GitHub_M
Published: 2021-07-02T18:15:11
State: PUBLISHED
affected: product: js-stellar-sdk
vendor: stellar
versions: status: affected
version: < 8.2.3
descriptions: value: js-stellar-sdk is a Javascript library for communicating with a Stellar Horizon server. The `Utils.readChallengeTx` function used in SEP-10 Stellar Web Authentication states in its function documentation that it reads and validates the challenge transaction including verifying that the `serverAccountID` has signed the transaction. In js-stellar-sdk before version 8.2.3, the function does not verify that the server has signed the transaction. Applications that also used `Utils.verifyChallengeTxThreshold` or `Utils.verifyChallengeTxSigners` to verify the signatures including the server signature on the challenge transaction are unaffected as those functions verify the server signed the transaction. Applications calling `Utils.readChallengeTx` should update to version 8.2.3, the first version with a patch for this vulnerability, to ensure that the challenge transaction is completely valid and signed by the server creating the challenge transaction.
metrics: cvssV3_1: attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 6.5
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: HIGH
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
version: 3.1
problemTypes: descriptions: cweId: CWE-287
description: CWE-287: Improper Authentication
type: CWE
source: advisory: GHSA-6cgh-hjpw-q3gq
discovery: UNKNOWN
title: Utils.readChallengeTx does not verify the server account signature