CVE-2020-25583 Information

Description

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

https://security.FreeBSD.org/advisories/FreeBSD-SA-20:32.rtsold.asc https://security.netapp.com/advisory/ntap-20210423-0004/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8