SB2019071105 - Buffer overflow in iptables

Description

This security bulletin contains information about 1 security vulnerability.

1) Buffer overflow (CVE-ID: CVE-2019-11360)

The vulnerability allows an attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in add_param_to_argv() function in iptables/xshared.c when parsing, passed as argument to iptables-restore. A remote attacker can create a specially crafted files with iptables rules, trick a system administrator to pass it to the iptables-restore tool, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system but requires significant social engineering.

Remediation

Install update from vendor's website.

References

• https://0day.work/cve-2019-11360-bufferoverflow-in-iptables-restore-v1-8-2/
• https://git.netfilter.org/iptables/commit/iptables/xshared.c?id=2ae1099a42e6a0f06de305ca13a842ac83d4...