CVE-2009-1491

McAfee GroupShield for Microsoft Exchange on Exchange Server 2000, and possibly other anti-virus or anti-spam products from McAfee or other vendors, does not…

published May 5, 2009

CVSS
—
EPSS
3%
Percentile
86.5
In the wild
Unconfirmed
What it is

⚠️ A crafty message is all it takes to dodge virus detection! This vulnerability in McAfee GroupShield lets attackers slip through malicious content using X- headers without breaking a sweat. 🤯 Think of it like a restaurant that only checks the main course for allergens but ignores the appetizer. An attacker can sneak in a harmful X- header as if it were a harmless salad dressing! If exploited, this could lead to a complete bypass of your virus detection, allowing harmful messages to infiltrate your Exchange Server. Imagine a silent invader slipping past your defenses — they could spread malware or other malicious payloads without detection, creating chaos in your systems.

Put simply

Think of it like a restaurant that only checks the main course for allergens but ignores the appetizer. An attacker can sneak in a harmful X- header as if it were a harmless salad dressing! McAfee GroupShield for Microsoft Exchange does not scan X- headers for malicious content. This allows attackers to craft messages that evade detection, effectively bypassing virus protection mechanisms.

What to do

If exploited, this could lead to a complete bypass of your virus detection, allowing harmful messages to infiltrate your Exchange Server. Imagine a silent invader slipping past your defenses — they could spread malware or other malicious payloads without detection, creating chaos in your systems. To mitigate this risk, update your McAfee GroupShield to the latest version that addresses this issue. Additionally, review and refine your email filtering policies to include inspections of all headers, not just the body of the message. Regularly audit your security settings to ensure they are up-to-date. You've got this! Take these steps, and you'll fortify your defenses in no time. 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.02818 · 86.5th percentile
Published
2009-05-05T19:00Z
EPSS history
Timeline
  • 05 MAY 19:00Z
    McAfee GroupShield for Microsoft Exchange on Exchange Server 2000, and possibly other anti-virus or anti-spam products from McAfee or other vendors, does not…
    cvelistv5