In FreeBSD 12.2-STABLE before r368250, 11.4-STABLE before r368253, 12.2-RELEASE before p1, 12.1-RELEASE before p11 and 11.4-RELEASE before p5 when processing a DNSSL option, rtsold(8) decodes domain name labels per an encoding specified in RFC 1035 in which the first octet of each label contains the label's length. rtsold(8) did not validate label lengths correctly and could overflow the destination buffer.

Related CVEs

CVE-2020-25583

Key Information

GHSA ID

GHSA-972m-7j39-p3qp

Published

May 24, 2022 5:45 PM

Last Modified

May 24, 2022 5:45 PM

CVSS Score

9.0 /10

Primary Ecosystem

Unknown

Primary Package

Unknown

GitHub Reviewed

✗ No

Dataset

Last updated: June 14, 2025 6:24 AM

Data from GitHub Advisory Database. This information is provided for research and educational purposes.