Friday, March 29, 2024

Flaws With Horde Webmail Let Attackers Gain Full Access to the Email Account

Cybersecurity experts have urged companies and users to immediately change the default setting of the Horde Webmail who use the Horde Webmail application to view their emails.

As recently, it has been discovered that a default feature of Horde Webmail contains a nine-year-old unpatched security flaw that could be exploited by the threat actors to gain full access to the email accounts.

Here’s what the security analysts at Sonar Source, SIMON SCANNELL has stated:-

“We discovered a code vulnerability in Horde that allows an attacker to gain full access to the email account of a victim when it loads the preview of a harmless-looking email attachment.” 

“This gives the attacker access to all sensitive and perhaps secret information a victim has stored in their email account and could allow them to gain further access to the internal services of an organization.”

Horde Webmail app is one of the popular clients that comes pre-installed with the cPanel that is used by several hosting companies and millions of website admins.

A flaw in Horde Webmail

The flaw detected in Horde Webmail resides in one of the default features of the client which takes the OpenOffice documents and then creates previews to show them inside the browser.

This security flaw is an XSS vulnerability (cross-site scripting flaw) that was initially detected 9-years-ago with the commit 325a7ae. A malicious OpenOffice document can be crafted by an attacker which could be transformed to XHTML for preview by Horde.

Here, at this point when Horde generates the preview of the transformed XHTML can trigger the execution of a malicious JavaScript payload.

While Scannell added:-

“If an attacker succeeds in targeting an administrator with a personalized, malicious email, they could abuse this privileged access to take over the entire webmail server.”

However, due to an informal matching rule in an XSLT document, this XSS vulnerability emerges.  

No patch, but there’s a way to stop

Currently, there is no official patch available for this vulnerability, but, still you can block such attacks. What you have to do is:-

  • Inside the Horde webmail app, you have to disable the rendering of OpenOffice attachments.

You can follow us on Linkedin, Twitter, Facebook for daily Cybersecurity and hacking news updates.

Website

Latest articles

GoPlus’s Latest Report Highlights How Blockchain Communities Are Leveraging Critical API Security Data To Mitigate Web3 Threats

GoPlus Labs, the leading Web3 security infrastructure provider, has unveiled a groundbreaking report highlighting...

Wireshark 4.2.4 Released: What’s New!

Wireshark stands as the undisputed leader, offering unparalleled tools for troubleshooting, analysis, development, and...

Zoom Unveils AI-Powered All-In-One AI Work Workplace

Zoom has taken a monumental leap forward by introducing Zoom Workplace, an all-encompassing AI-powered...

iPhone Users Beware! Darcula Phishing Service Attacking Via iMessage

Phishing allows hackers to exploit human vulnerabilities and trick users into revealing sensitive information...

2 Chrome Zero-Days Exploited at Pwn2Own 2024: Patch Now

Google has announced a crucial update to its Chrome browser, addressing several vulnerabilities, including...

The Moon Malware Hacked 6,000 ASUS Routers in 72hours to Use for Proxy

Black Lotus Labs discovered a multi-year campaign by TheMoon malware targeting vulnerable routers and...
Guru baran
Guru baranhttps://gbhackers.com
Gurubaran is a co-founder of Cyber Security News and GBHackers On Security. He has 10+ years of experience as a Security Consultant, Editor, and Analyst in cybersecurity, technology, and communications.

Mitigating Vulnerability Types & 0-day Threats

Mitigating Vulnerability & 0-day Threats

Alert Fatigue that helps no one as security teams need to triage 100s of vulnerabilities.

  • The problem of vulnerability fatigue today
  • Difference between CVSS-specific vulnerability vs risk-based vulnerability
  • Evaluating vulnerabilities based on the business impact/risk
  • Automation to reduce alert fatigue and enhance security posture significantly

Related Articles