484838 – (CVE-2013-4343) Kernel : net: use-after-free TUNSETIFF (CVE-2013-4343)

Bug 484838 (CVE-2013-4343) - Kernel : net: use-after-free TUNSETIFF (CVE-2013-4343)

Summary: Kernel : net: use-after-free TUNSETIFF (CVE-2013-4343)

Status:	RESOLVED FIXED

Alias:	CVE-2013-4343

Product:	Gentoo Security
Classification:	Unclassified
Component:	Kernel (show other bugs)
Hardware:	All Linux

Importance:	Normal normal (vote)
Assignee:	Gentoo Kernel Security

URL:	https://bugzilla.redhat.com/show_bug....
Whiteboard:
Keywords:

Depends on:
Blocks:

Reported:	2013-09-14 06:55 UTC by Agostino Sarubbo
Modified:	2022-03-25 15:37 UTC (History)
CC List:	1 user (show)

See Also:
Package list:
Runtime testing required:	---

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.

Description Agostino Sarubbo gentoo-dev

2013-09-14 06:55:46 UTC

From ${URL} :

Linux kernel built with the Universal TUN/TAP device driver(CONFIG_TUN) support
is vulnerable to a potential privilege escalation via an use-after-free flaw.
It could occur while doing an ioctl(TUNSETIFF) call.

A privileged(CAP_NET_ADMIN) user/program could use this flaw to crash the
kernel resulting DoS or potentially escalate privileges to gain root access
to a system.

Upstream fix:
-------------
 -> https://lkml.org/lkml/2013/9/11/335

Reference:
----------
 -> http://www.openwall.com/lists/oss-security/2013/09/12/3

Comment 1 GLSAMaker/CVETool Bot gentoo-dev

2013-09-30 16:26:26 UTC

CVE-2013-4343 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-4343):
  Use-after-free vulnerability in drivers/net/tun.c in the Linux kernel
  through 3.11.1 allows local users to gain privileges by leveraging the
  CAP_NET_ADMIN capability and providing an invalid tuntap interface name in a
  TUNSETIFF ioctl call.

Comment 2 John Helmert III archtester

2022-03-25 15:37:54 UTC

In 3.11.5 onwards