SB2021052716 - Multiple vulnerabilities in FreeBSD

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Input validation error (CVE-ID: CVE-2021-29629)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of messages in libradius(3). A remote radius client can pass specially crafted input to the system and perform a denial of service (DoS) attack.

2) Security features bypass (CVE-ID: CVE-2021-29628)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists in the SMAP capability implementation.  A local user can bypass SMAP protection and perform unauthorized actions on the system.

Remediation

Install update from vendor's website.

References

• https://www.freebsd.org/security/advisories/FreeBSD-SA-21:12.libradius.asc
• https://www.freebsd.org/security/advisories/FreeBSD-SA-21:11.smap.asc