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 rtsold(8) does not verify that the RDNSS option does not extend past the end of the received packet before processing its contents. While the kernel currently ignores such malformed packets, it passes them to userspace programs. Any programs expecting the kernel to do validation may be vulnerable to an overflow.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: freebsd

Published: 2021-03-29T19:53:50

Updated: 2024-08-04T15:33:05.753Z

Reserved: 2020-09-14T00:00:00

Link: CVE-2020-25577

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2021-03-29T20:15:12.860

Modified: 2021-06-03T19:12:25.530

Link: CVE-2020-25577

cve-icon Redhat

No data.