CVE-2019-11360

Publication date 12 July 2019

Last updated 24 July 2024


Ubuntu priority

Negligible

Why this priority?

Cvss 3 Severity Score

4.2 · Medium

Score breakdown

A buffer overflow in iptables-restore in netfilter iptables 1.8.2 allows an attacker to (at least) crash the program or potentially gain code execution via a specially crafted iptables-save file. This is related to add_param_to_argv in xshared.c.

Read the notes from the security team

Status

Package Ubuntu Release Status
iptables 20.04 LTS focal
Not affected
19.10 eoan
Not affected
19.04 disco Ignored end of life
18.10 cosmic Ignored end of life
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty
Not affected

Notes


mdeslaur

To exploit this, you would need to trick someone into restoring a set of iptables rules from a malicious iptables-save file. This is quite an unlikely scenario. Reproducer doesn’t work on xenial and bionic, like an issue in 1.8.2 only.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
iptables

Severity score breakdown

Parameter Value
Base score 4.2 · Medium
Attack vector Local
Attack complexity Low
Privileges required High
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H