CVE-2018-14043

mstdlib (aka the M Standard Library for C) 1.2.0 has incorrect file access control in situations where M_fs_perms_can_access attempts to delete an existing…

published July 13, 2018

CVSS
—
EPSS
2%
Percentile
76.2
In the wild
Unconfirmed
What it is

⚠️ A little oversight in mstdlib 1.2.0 could open a door for sneaky file access! The library doesn’t properly check permissions when deleting files during a copy operation. 🔍 Think of it as a restaurant that accidentally lets a diner take home their leftover dish, even when they’ve changed the order—it’s handing out food that shouldn’t leave the kitchen! In this case, an attacker could create a file and gain access to sensitive data that should have been protected. This could lead to unauthorized data exposure, potentially putting users at risk if the attacker leverages this vulnerability. Imagine someone accessing your secret recipe without permission—absolutely devastating!

Put simply

Think of it as a restaurant that accidentally lets a diner take home their leftover dish, even when they’ve changed the order—it’s handing out food that shouldn’t leave the kitchen! This vulnerability arises because mstdlib’s permission checking in the M_fs_perms_can_access function is inadequate. When trying to delete a file during a copy, it fails to enforce the proper access controls, allowing unauthorized access to files lacking public read/write permissions.

What to do

In this case, an attacker could create a file and gain access to sensitive data that should have been protected. This could lead to unauthorized data exposure, potentially putting users at risk if the attacker leverages this vulnerability. Imagine someone accessing your secret recipe without permission—absolutely devastating! To mitigate this vulnerability, developers should update to a patched version of mstdlib as soon as it becomes available. Reviewing and enhancing file access permissions in existing implementations can also be beneficial. You've got this! Stay vigilant and keep your data safe! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01653 · 76.2th percentile
Published
2018-07-13T14:00Z
EPSS history
Timeline
  • 13 JUL 14:00Z
    mstdlib (aka the M Standard Library for C) 1.2.0 has incorrect file access control in situations where M_fs_perms_can_access attempts to delete an existing…
    cvelistv5