CVE-2019-8276: kaspersky lab ultravnc Stack-based Buffer Overflow

Vulnerability summary

CVE-2019-8276 is a high (CVSS 7.5) Stack-based Buffer Overflow vulnerability in kaspersky lab ultravnc. EPSS estimates a 5.72% chance of exploitation in the next 30 days, higher than 92.9% of scored vulnerabilities.

Timeline

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

Description

UltraVNC revision 1211 has a stack buffer overflow vulnerability in VNC server code inside file transfer request handler, which can result in Denial of Service (DoS). This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1212.

• CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.