Honeyd remote detection vulnerability via a probe packet

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200401-02 / honeyd
Release Date	January 21, 2004
Latest Revision	January 21, 2004: 01
Impact	low
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-analyzer/honeyd	< 0.8	>= 0.8	All supported architectures

Related bugreports: #38934

Synopsis

Identification of Honeyd installations allows an adversary to launch attacks specifically against Honeyd. No remote root exploit is currently known.

2. Impact Information

Background

Honeyd is a virtual honeypot daemon that can simulate virtual hosts on unallocated IP addresses.

Description

A bug in handling NMAP fingerprints caused Honeyd to reply to TCP packets with both the SYN and RST flags set. Watching for replies, it is possible to detect IP addresses simulated by Honeyd.

Impact

Although there are no public exploits known for Honeyd, the detection of Honeyd IP addresses may in some cases be undesirable.

3. Resolution Information

Workaround

Honeyd 0.8 has been released along with an advisory to address this issue. In addition, Honeyd 0.8 drops privileges if permitted by the configuration file and contains command line flags to force dropping of privileges.

Resolution

All users are recommended to update to honeyd version 0.8:

Code Listing 3.1: Resolution

$> emerge sync
$> emerge -pv ">=net-analyzer/honeyd-0.8"
$> emerge ">=net-analyzer/honeyd-0.8"

4. References

Honeyd Security Advisory 2004-001

Page updated January 21, 2004

Summary: This is a Gentoo Linux Security Advisory

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