Debian Security Advisory DSA 148-1 (hylafax)

Published: 2008-01-17 21:24:46
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:


Technical Details:
A set of problems have been discovered in Hylafax, a flexible client/server fax software distributed with many GNU/Linux distributions. Quoting SecurityFocus the problems are in detail: * A format string vulnerability makes it possible for users to potentially execute arbitrary code on some implementations. Due to insufficient checking of input, it's possible to execute a format string attack. Since this only affects systems with the faxrm and faxalter programs installed setuid, Debian is not vulnerable. * A buffer overflow has been reported in Hylafax. A malicious fax transmission may include a long scan line that will overflow a memory buffer, corrupting adjacent memory. An exploid may result in a denial of service condition, or possibly the execution of arbitrary code with root privileges. * A format string vulnerability has been discovered in faxgetty. Incoming fax messages include a Transmitting Subscriber Identification (TSI) string, used to identify the sending fax machine. Hylafax uses this data as part of a format string without properly sanitizing the input. Malicious fax data may cause the server to crash, resulting in a denial of service condition. * Marcin Dawcewicz discovered a format string vulnerability in hfaxd, which will crash hfaxd under certain circumstances. Since Debian doesn't have hfaxd installed setuid root, this problem can not directly lead into a vulnerability. This has been fixed by Darren Nickerson, which was already present in newer versions, but not in the potato version. These problems have been fixed in version 4.0.2-14.3 for the old stable distribution (potato), in version 4.1.1-1.1 for the current stable distribution (woody) and in version 4.1.2-2.1 for the unstable distribution (sid). We recommend that you upgrade your hylafax Linux Distribution Packages.

The remote host is missing an update to hylafax announced via advisory DSA 148-1.

Detection Type:
Linux Distribution Package

Solution Type:
Vendor Patch

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

SecurityFocus Bugtraq ID:

CVSS Score
Debian Local Security Checks

Free Vulnerability Scanning, Assessment and Management

Mageni's Platform is packed with all the features you need to scan, assess and manage vulnerabilities like this - it is free, open source, lightning fast, reliable and scalable.


Frequently Asked Questions

No, you can scan concurrently as many assets as you want. Please note that you must be aware of the hardware requeriments of the platform to ensure a good performance.

No, you can add as many assest as you want. It doesn't matters if you have millions of assets, we won't charge you for that.

No. The software is completely free. We have no intention to charge you to use the software, in fact - it completely goes against our beliefs and business model.

A vulnerability is defined in the ISO 27002 standard as “A weakness of an asset or group of assets that can be exploited by one or more threats” (International Organization for Standardization, 2005)

We generate revenue by providing support and other services for customers that require a subscription so they get guaranteed support and enterprise services. To use Mageni's Platform is completely free, with no limits at all.

Yes. Mageni understands that there are professionals and businesses that need commercial support so Mageni provides an active support subscription with everything needed to run Mageni's Platform reliably and securely. More than software, it's access to security experts, knowledge resources, security updates, and support tools you can't get anywhere else. The subscription includes:

  • Ongoing delivery
    • Patches
    • Bug fixes
    • Updates
    • Upgrades
  • Technical support
    • 24/7 availability
    • Unlimited Incidents
    • Specialty-based routing
    • Multi-Channel
  • Commitments
    • Software certifications
    • Software assurance
    • SLA

No, we don't store the information of your vulnerabilities in our servers.

Vulnerability management is the process in which vulnerabilities in IT are identified and the risks of these vulnerabilities are evaluated. This evaluation leads to correcting the vulnerabilities and removing the risk or a formal risk acceptance by the management of an organization. The term vulnerability management is often confused with vulnerability scanning. Despite the fact both are related, there is an important difference between the two. Vulnerability scanning consists of using a computer program to identify vulnerabilities in networks, computer infrastructure or applications. Vulnerability management is the process surrounding vulnerability scanning, also taking into account other aspects such as risk acceptance, remediation etc. Source: "Implementing a Vulnerability Management Process". SANS Institute.

I am ready to start scanning for vulnerabilities