Arch Linux alert ASA-202104-8 (libupnp)

From:
             
 
Santiago Torres-Arias via arch-security <arch-security@lists.archlinux.org>
To:
             
 
Archlinux security <arch-security@archlinux.org>
Subject:
             
 
[ASA-202104-8] libupnp: content spoofing
Date:
             
 
Thu, 29 Apr 2021 17:43:31 -0400
Message-ID:
             
 
<YIsog5eRDPA4QW9p@meme-cluster>
Cc:
             
 
Santiago Torres-Arias <santiago@archlinux.org>
Arch Linux Security Advisory ASA-202104-8
=========================================

Severity: High
Date    : 2021-04-29
CVE-ID  : CVE-2021-29462
Package : libupnp
Type    : content spoofing
Remote  : Yes
Link    : https://security.archlinux.org/AVG-1844

Summary
=======

The package libupnp before version 1.14.6-1 is vulnerable to content
spoofing.

Resolution
==========

Upgrade to 1.14.6-1.

# pacman -Syu "libupnp>=1.14.6-1"

The problem has been fixed upstream in version 1.14.6.

Workaround
==========

None.

Description
===========

The server part of pupnp (libupnp) appears to be vulnerable to DNS
rebinding attacks because it does not check the value of the `Host`
header. This can be mitigated by using DNS revolvers which block DNS-
rebinding attacks. The vulnerability is fixed in version 1.14.6 and
later.

Impact
======

An attacker is able to perform a DNS rebinding attack against a client
browser to trigger local UPnP services. This can be used to, for
example, exfiltrate or tamper data of a client.

References
==========

https://github.com/pupnp/pupnp/security/advisories/GHSA-6...
https://github.com/pupnp/pupnp/commit/21fd85815da7ed2578d...
https://security.archlinux.org/CVE-2021-29462