Executive Summary

Summary
Title New pptpd packages fix remote root exploit
Informations
Name DSA-295 First vendor Publication 2003-04-30
Vendor Debian Last vendor Modification 2003-04-30
Severity (Vendor) N/A Revision 1

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 7.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Timo Sirainen discovered a vulnerability in pptpd, a Point to Point Tunneling Server, which implements PPTP-over-IPSEC and is commonly used to create Virtual Private Networks (VPN). By specifying a small packet length an attacker is able to overflow a buffer and execute code under the user id that runs pptpd, probably root. An exploit for this problem is already circulating.

For the stable distribution (woody) this problem has been fixed in version 1.1.2-1.4.

For the old stable distribution (potato) this problem has been fixed in version 1.0.0-4.2.

For the unstable distribution (sid) this problem has been fixed in version 1.1.4-0.b3.2.

We recommend that you upgrade your pptpd package immediately.

Original Source

Url : http://www.debian.org/security/2003/dsa-295

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 6

OpenVAS Exploits

Date Description
2008-01-17 Name : Debian Security Advisory DSA 295-1 (pptpd)
File : nvt/deb_295_1.nasl
2005-11-03 Name : PPTP overflow
File : nvt/poptop_negative_read.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
3293 PoPToP PPTP ctrlpacket.c Negative Read Remote Overflow

The PoPToP PPTP Server contains a flaw that may allow a malicious user to execute arbitrary code. The issue is triggered when the server receives a malicious packet with the length field to set either zero or one. This causes a read operation to use a negative value, allowing sensitive memory regions to be overwritten with user-supplied data. It is possible that the flaw may allow arbitrary code execution on the Linux platform, resulting in a loss of integrity or availability.

Snort® IPS/IDS

Date Description
2014-01-10 PPTP echo request buffer overflow attempt
RuleID : 3664 - Revision : 16 - Type : SERVER-OTHER

Nessus® Vulnerability Scanner

Date Description
2004-09-29 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-295.nasl - Type : ACT_GATHER_INFO
2003-04-16 Name : Arbitrary code may be run on the remote server.
File : poptop_negative_read.nasl - Type : ACT_DESTRUCTIVE_ATTACK

Alert History

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0
1
Date Informations
2014-02-17 11:32:36
  • Multiple Updates
2014-01-19 21:29:39
  • Multiple Updates