Denial of service when processing ELF binaries in FreeBSD

Published: 2018-09-12 20:51:49
Severity Medium
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2018-6924
CVSSv3 5.2 [CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:H/E:U/RL:O/RC:C]
CWE ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software FreeBSD
Vulnerable software versions FreeBSD 11.0
FreeBSD 11.2
FreeBSD 11.1
FreeBSD 10.4
Vendor URL FreeBSD Foundation

Security Advisory

1) Input validation error

Description

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

The vulnerability exists due to insufficient validation of user-supplied input in ELF header parser. A remote attacker can create a specially crafted binary, trick the use into executing it and disclose kernel memory or crash the kernel.

Remediation

Install updates from vendor's website.

External links

https://www.freebsd.org/security/advisories/FreeBSD-SA-18:12.elf.asc

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