CVE-2019-11704

A flaw in Thunderbird's implementation of iCal causes a heap buffer overflow in icalmemory_strdup_and_dequote when processing certain email messages, resulting…

published July 23, 2019

CVSS
—
EPSS
11%
Percentile
95.8
In the wild
Unconfirmed
What it is

⚠️ A sneaky buffer overflow lurks in Thunderbird! When it processes certain iCal messages, it can lead to a crash, like a waiter dropping a tray full of drinks at a busy restaurant. 🍹 Think of this flaw as a kitchen with a poorly designed counter space: if too many ingredients are piled on one side, it can lead to a catastrophic spill. In this case, the heap buffer overflow is the resulting chaos that can crash your email client. If exploited, this vulnerability could make Thunderbird unstable, leading to crashes that disrupt your communication. While there hasn’t been any known exploitation yet, being caught off guard can be absolutely devastating for your productivity! 📉

Put simply

Think of this flaw as a kitchen with a poorly designed counter space: if too many ingredients are piled on one side, it can lead to a catastrophic spill. In this case, the heap buffer overflow is the resulting chaos that can crash your email client. The flaw occurs in Thunderbird's handling of iCal via a heap buffer overflow in the function icalmemory_strdup_and_dequote when processing specific email messages, affecting versions prior to 60.7.1.

What to do

If exploited, this vulnerability could make Thunderbird unstable, leading to crashes that disrupt your communication. While there hasn’t been any known exploitation yet, being caught off guard can be absolutely devastating for your productivity! 📉 To protect yourself, update Thunderbird to version 60.7.1 or later immediately. It's always wise to check for any potential incoming iCal messages from unknown sources as a precaution. 🔄 You've got this! Stay vigilant and keep your software up to date to keep your email experience smooth and crash-free! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.10527 · 95.8th percentile
Published
2019-07-23T13:20Z
EPSS history
Timeline
  • 23 JUL 13:20Z
    A flaw in Thunderbird's implementation of iCal causes a heap buffer overflow in icalmemory_strdup_and_dequote when processing certain email messages, resulting…
    cvelistv5