CVE-2019-11360

Published: 12 July 2019

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.

Priority

Negligible

CVSS 3 base score: 4.2

Status

Package Release Status
iptables
Launchpad, Ubuntu, Debian
Upstream
Released (1.8.3-2)
Ubuntu 20.10 (Groovy Gorilla) Not vulnerable
(1.8.3-2ubuntu4)
Ubuntu 20.04 LTS (Focal Fossa) Not vulnerable
(1.8.3-2ubuntu4)
Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable

Ubuntu 16.04 LTS (Xenial Xerus) Not vulnerable

Ubuntu 14.04 ESM (Trusty Tahr) Not vulnerable

Patches:
Upstream: https://git.netfilter.org/iptables/commit/iptables/xshared.c?id=2ae1099a42e6a0f06de305ca13a842ac83d4683e (1.8.3)
Upstream: https://git.netfilter.org/iptables/commit/iptables/xshared.c?id=2ae1099a42e6a0f06de305ca13a842ac83d4683e

Notes

AuthorNote
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.

References