New Sendmail Vulnerability - InformationWeek

InformationWeek is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

IoT
IoT
News

New Sendmail Vulnerability

Vulnerable versions of Sendmail can give attackers 'root' access to a company's Sendmail servers.

The information security clearinghouse CERT Coordination Center is warning of another serious security flaw in the popular Sendmail E-mail server software.

According to CERT, vulnerable versions of Sendmail can give attackers "root" access to a company's Sendmail servers. From there, attackers can run any of the company's applications or open the servers up to denial-of-service attacks.

Vulnerable Sendmail apps include all Sendmail Pro and open-source Sendmail versions prior to 8.12.8, including Unix and Linux versions. Several versions of Sendmail Switch and Sendmail for Windows NT also are vulnerable, according to CERT.

This Sendmail problem is unrelated to one discovered by Internet Security Systems Inc. and revealed in early March. The trouble occurs in the way Sendmail fails to adequately check the length of E-mail addresses, a situation referred to as "stack overflow," which enablers an attacker to gain control of a server.

Sendmail is widely used by midsize and large businesses, and CERT says most companies probably have vulnerable servers in operation. Even if a company is using another E-mail server at its gateway, properly designed E-mails could be forwarded to vulnerable internal Sendmail servers and cause trouble. To make matters more frustrating for admins, many Unix and Linux workstations contain an implementation of Sendmail that's enabled by default.

CERT's advisory, CA-2003-12, is available on its Web site. For additional information, see www.sendmail.org and www.sendmail.com/security.

We welcome your comments on this topic on our social media channels, or [contact us directly] with questions about the site.
Comment  | 
Print  | 
More Insights
The State of Cloud Computing - Fall 2020
The State of Cloud Computing - Fall 2020
Download this report to compare how cloud usage and spending patterns have changed in 2020, and how respondents think they'll evolve over the next two years.
Commentary
2021 Outlook: Tackling Cloud Transformation Choices
Joao-Pierre S. Ruth, Senior Writer,  1/4/2021
News
Enterprise IT Leaders Face Two Paths to AI
Jessica Davis, Senior Editor, Enterprise Apps,  12/23/2020
Slideshows
10 IT Trends to Watch for in 2021
Cynthia Harvey, Freelance Journalist, InformationWeek,  12/22/2020
Register for InformationWeek Newsletters
Video
Current Issue
2021 Top Enterprise IT Trends
We've identified the key trends that are poised to impact the IT landscape in 2021. Find out why they're important and how they will affect you.
White Papers
Slideshows
Twitter Feed
Sponsored Live Streaming Video
Everything You've Been Told About Mobility Is Wrong
Attend this video symposium with Sean Wisdom, Global Director of Mobility Solutions, and learn about how you can harness powerful new products to mobilize your business potential.
Sponsored Video
Flash Poll