CVE-2024-21491

Versions of the package svix before 1.17.0 are vulnerable to Authentication Bypass due to an issue in the verify function where signatures of different lengths are incorrectly compared. An attacker can bypass signature verification by providing a shorter signature that matches the beginning of the actual signature. **Note:** The attacker would need to know a victim uses the Rust library for verification,no easy way to automatically check that; and uses webhooks by a service that uses Svix, and then figure out a way to craft a malicious payload that will actually include all of the correct identifiers needed to trick the receivers to cause actual issues.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/svix/svix-webhooks/commit/958821bd3b956d1436af65f70a0964d4ffb7daf6	Patch
https://github.com/svix/svix-webhooks/pull/1190	Patch
https://rustsec.org/advisories/RUSTSEC-2024-0010.html	Third Party Advisory
https://security.snyk.io/vuln/SNYK-RUST-SVIX-6230729	Third Party Advisory
https://github.com/svix/svix-webhooks/commit/958821bd3b956d1436af65f70a0964d4ffb7daf6	Patch
https://github.com/svix/svix-webhooks/pull/1190	Patch
https://rustsec.org/advisories/RUSTSEC-2024-0010.html	Third Party Advisory
https://security.snyk.io/vuln/SNYK-RUST-SVIX-6230729	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:svix:svix-webhooks:*:*:*:*:*:*:*:*

History

03 Jan 2025, 19:40

Type	Values Removed	Values Added
First Time		Svix svix-webhooks
CPE	cpe:2.3:a:svix:svix::::::::	cpe:2.3:a:svix:svix-webhooks::::::::

Information

Published : 2024-02-13 05:15

Updated : 2025-01-03 19:40

NVD link : CVE-2024-21491

Mitre link : CVE-2024-21491

CVE.ORG link : CVE-2024-21491

JSON object : View

Products Affected

svix

svix-webhooks

CWE

CWE-288

Authentication Bypass Using an Alternate Path or Channel

CWE-347

Improper Verification of Cryptographic Signature

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