CVE-2018-15361: ultravnc Buffer Underflow

Vulnerability summary

CVE-2018-15361 is a critical (CVSS 9.8) Buffer Underflow vulnerability in ultravnc. EPSS estimates a 2.88% chance of exploitation in the next 30 days, higher than 86.6% of scored vulnerabilities.

Timeline

1. 05-03-2019
   PublishedVulnerability first disclosed.
2. 16-09-2024
   Last modifiedVulnerability information updated.

Description

UltraVNC revision 1198 has a buffer underflow vulnerability in VNC client code, which can potentially result in code execution. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1199.

• CWE-124Buffer Underwrite ('Buffer Underflow')The product writes to a buffer using an index or pointer that references a memory location prior to the beginning of the buffer.
• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.