CVE-2018-12911

WebKitGTK+ 2.20.3 has an off-by-one error, with a resultant out-of-bounds write, in the get_simple_globs functions in ThirdParty/xdgmime/src/xdgmimecache.c and…

published July 19, 2018

CVSS
—
EPSS
2%
Percentile
77.3
In the wild
Unconfirmed
What it is

⚠️ A sneaky off-by-one error in WebKitGTK+ could lead to an out-of-bounds write — like trying to put one too many groceries in a bag, and watching it burst at the seams! 📦 Imagine you're stacking boxes in a warehouse, but you miscount and try to fit in one more than the shelf can hold. The extra box spills out, causing chaos! That's similar to what's happening in the get_simple_globs functions in WebKitGTK+. An attacker could potentially exploit this vulnerability to manipulate memory, leading to unpredictable behavior in the application. While this isn't a guaranteed disaster, it opens the door for some surprisingly sneaky issues down the line.

Put simply

Imagine you're stacking boxes in a warehouse, but you miscount and try to fit in one more than the shelf can hold. The extra box spills out, causing chaos! That's similar to what's happening in the get_simple_globs functions in WebKitGTK+. This vulnerability arises from an off-by-one error, which causes an out-of-bounds write in the xdgmime functions, allowing for memory manipulation due to improper handling of data sizes.

What to do

An attacker could potentially exploit this vulnerability to manipulate memory, leading to unpredictable behavior in the application. While this isn't a guaranteed disaster, it opens the door for some surprisingly sneaky issues down the line. To mitigate this issue, update WebKitGTK+ to the latest version beyond 2.20.3. Additionally, monitor your applications for any unusual behavior that could indicate memory corruption. You've got this! With a quick update, your WebKitGTK+ will be back to secure and reliable in no time! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01728 · 77.3th percentile
Published
2018-07-19T13:00Z
EPSS history
Timeline
  • 19 JUL 13:00Z
    WebKitGTK+ 2.20.3 has an off-by-one error, with a resultant out-of-bounds write, in the get_simple_globs functions in ThirdParty/xdgmime/src/xdgmimecache.c and…
    cvelistv5