CVE-2016-4542

The exif_process_IFD_TAG function in ext/exif/exif.c in PHP before 5.5.35, 5.6.x before 5.6.21, and 7.x before 7.0.6 does not properly construct spprintf…

published May 22, 2016

CVSS
—
EPSS
6%
Percentile
93.3
In the wild
Unconfirmed
What it is

⚠️ A misuse of spprintf arguments in PHP could open the door to an unwanted service crash. It’s like inviting guests over but leaving the door ajar for anyone to peek in! Think of it like a restaurant kitchen where the chef misreads the recipe and ends up with a dish that overflows everywhere. Instead of a tasty meal, you get a chaotic mess that stops the whole operation! An attacker could exploit this vulnerability to trigger an out-of-bounds read, potentially causing the application to crash. This could lead to a denial of service, meaning your service could become unavailable to real users, impacting both reputation and functionality. Yikes!

Put simply

Think of it like a restaurant kitchen where the chef misreads the recipe and ends up with a dish that overflows everywhere. Instead of a tasty meal, you get a chaotic mess that stops the whole operation! This vulnerability in the exif_process_IFD_TAG function allows for improper handling of spprintf arguments, leading to potential memory access violations. If an attacker crafts their header data just right, it can cause significant disruption.

What to do

An attacker could exploit this vulnerability to trigger an out-of-bounds read, potentially causing the application to crash. This could lead to a denial of service, meaning your service could become unavailable to real users, impacting both reputation and functionality. Yikes! To fix this, ensure you are using PHP version 5.5.35, 5.6.21, or 7.0.6 and later. Regularly update your PHP installations and keep an eye out for security patches to maintain your defenses. 🛡️ You've got this! Stay proactive with your updates, and you’ll keep your environment secure and thriving! 🚀

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.06063 · 93.3th percentile
Published
2016-05-22T01:00Z
EPSS history
Timeline
  • 22 MAY 01:00Z
    The exif_process_IFD_TAG function in ext/exif/exif.c in PHP before 5.5.35, 5.6.x before 5.6.21, and 7.x before 7.0.6 does not properly construct spprintf…
    cvelistv5