Dark Reading 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.

Vulnerabilities / Threats

9/6/2019
02:15 PM
50%
50%

Mail System Vulnerability Delivers Root Privileges

The vulnerability in Exim could allow an attacker to remotely execute code with root privileges.

Exim, the mail transfer agent used by more than half the email servers on the Internet, has a vulnerability. The flaw, found in versions from 4.80 through 4.92.1, allows a malicious actor to use an encrypted TLS connection to remotely execute code with root privileges.

The vulnerability, designated CVE-2019-15846, was discovered by researcher Zerons in late July. It takes advantage of the TLS ServerName Indicator (SNI), a feature that allows TLS to serve different certificates for various websites on a single server. A buffer overflow triggered by a relatively simple SNI request followed by a counterfeit client certificate are enough to exploit the vulnerability.

Responsible disclosure procedures were followed and a patch for the vulnerability has been made available in Exim 4.92.2.

For more, read here.

Check out The Edge, Dark Reading's new section for features, threat data, and in-depth perspectives. Today's top story: "8 Ways To Spot an Insider Threat"

Dark Reading's Quick Hits delivers a brief synopsis and summary of the significance of breaking news events. For more information from the original source of the news item, please follow the link provided in this article. View Full Bio

Comment  | 
Print  | 
More Insights
Comments
Oldest First  |  Newest First  |  Threaded View
HackerOne Drops Mobile Voting App Vendor Voatz
Dark Reading Staff 3/30/2020
Limited-Time Free Offers to Secure the Enterprise Amid COVID-19
Curtis Franklin Jr., Senior Editor at Dark Reading,  3/31/2020
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Current Issue
6 Emerging Cyber Threats That Enterprises Face in 2020
This Tech Digest gives an in-depth look at six emerging cyber threats that enterprises could face in 2020. Download your copy today!
Flash Poll
State of Cybersecurity Incident Response
State of Cybersecurity Incident Response
Data breaches and regulations have forced organizations to pay closer attention to the security incident response function. However, security leaders may be overestimating their ability to detect and respond to security incidents. Read this report to find out more.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2020-11518
PUBLISHED: 2020-04-04
Zoho ManageEngine ADSelfService Plus before 5815 allows unauthenticated remote code execution.
CVE-2020-5347
PUBLISHED: 2020-04-04
Dell EMC Isilon OneFS versions 8.2.2 and earlier contain a denial of service vulnerability. SmartConnect had an error condition that may be triggered to loop, using CPU and potentially preventing other SmartConnect DNS responses.
CVE-2020-5348
PUBLISHED: 2020-04-04
Dell Latitude 7202 Rugged Tablet BIOS versions prior to A28 contain a UAF vulnerability in EFI_BOOT_SERVICES in system management mode. A local unauthenticated attacker may exploit this vulnerability by overwriting the EFI_BOOT_SERVICES structure to execute arbitrary code in system management mode.
CVE-2020-8142
PUBLISHED: 2020-04-03
A security restriction bypass vulnerability has been discovered in Revive Adserver version < 5.0.5 by HackerOne user hoangn144. Revive Adserver, like many other applications, requires the logged in user to type the current password in order to change the e-mail address or the password. It was how...
CVE-2020-8143
PUBLISHED: 2020-04-03
An Open Redirect vulnerability was discovered in Revive Adserver version < 5.0.5 and reported by HackerOne user hoangn144. A remote attacker could trick logged-in users to open a specifically crafted link and have them redirected to any destination.The CSRF protection of the “/...