Improper input validation in FreeBSD - CVE-2018-17156
Published: November 28, 2018 / Updated: November 30, 2018
Vulnerability identifier: #VU16197
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-17156
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: FreeBSD Foundation
Affected software:
FreeBSD
FreeBSD
Detailed vulnerability description
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to incorrect accounting for padding on 64-bit platforms. A remote unauthenticated attacker can trigger buffer underwrite when constructing an ICMP reply packet when using a non-standard value for the net.inet.icmp.quotelen sysctl and cause the target system to crash.
How to mitigate CVE-2018-17156
Install update from vendor's website.