Ecosyste.ms: Advisories

Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLThtOWctNjQ3Zy01cHh3

Infinite loop in Yubico yubihsm-connector

An issue was discovered in the /api/connector endpoint handler in Yubico yubihsm-connector before 3.0.1 (in YubiHSM SDK before 2021.04). The handler did not validate the length of the request, which can lead to a state where yubihsm-connector becomes stuck in a loop waiting for the YubiHSM to send it data, preventing any further operations until the yubihsm-connector is restarted. An attacker can send 0, 1, or 2 bytes to trigger this.

Permalink: https://github.com/advisories/GHSA-8m9g-647g-5pxw
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLThtOWctNjQ3Zy01cHh3
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: about 2 years ago
Updated: over 1 year ago

CVSS Score: 5.4
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:R

Identifiers: GHSA-8m9g-647g-5pxw, CVE-2021-28484
References:

• https://nvd.nist.gov/vuln/detail/CVE-2021-28484
• https://github.com/Yubico/yubihsm-connector/commit/82bdf202c53460bac9106cc9b4b34a0a16cae0ed
• https://github.com/Yubico/yubihsm-connector/releases
• https://www.yubico.com/support/security-advisories/ysa-2021-02/
• https://github.com/advisories/GHSA-8m9g-647g-5pxw

Repository: https://github.com/Yubico/yubihsm-connector
Blast Radius: 1.0

Affected Packages