CVE-2019-15694: kaspersky tigervnc Heap-based Buffer Overflow

Vulnerability summary

CVE-2019-15694 is a high (CVSS 7.2) Heap-based Buffer Overflow vulnerability in kaspersky tigervnc. EPSS estimates a 4.49% chance of exploitation in the next 30 days, higher than 91.3% of scored vulnerabilities. 2 public exploits are recorded.

Timeline

1. 26-12-2019
   PublishedVulnerability first disclosed.
2. 05-08-2024
   Last modifiedVulnerability information updated.

Description

TigerVNC version prior to 1.10.1 is vulnerable to heap buffer overflow, which could be triggered from DecodeManager::decodeRect. Vulnerability occurs due to the signdness error in processing MemOutStream. Exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity.

• CWE-122Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.