CVE-2018-8787: canonical ubuntu_linux Integer Overflow to Buffer Overflow

Vulnerability summary

CVE-2018-8787 is a critical (CVSS 9.8) Integer Overflow to Buffer Overflow vulnerability in canonical ubuntu_linux. EPSS estimates a 8.36% chance of exploitation in the next 30 days, higher than 94.9% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 29-11-2018
   PublishedVulnerability first disclosed.
2. 16-09-2024
   Last modifiedVulnerability information updated.

Description

FreeRDP prior to version 2.0.0-rc4 contains an Integer Overflow that leads to a Heap-Based Buffer Overflow in function gdi_Bitmap_Decompress() and results in a memory corruption and probably even a remote code execution.

• CWE-680Integer Overflow to Buffer OverflowThe product performs a calculation to determine how much memory to allocate, but an integer overflow can occur that causes less memory to be allocated than expected, leading to a buffer overflow.
• CWE-190Integer Overflow or WraparoundThe product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.