CVE-2020-19695: f5 njs Classic Buffer Overflow

Vulnerability summary

CVE-2020-19695 is a critical (CVSS 9.8) Classic Buffer Overflow vulnerability in f5 njs. EPSS estimates a 1.33% chance of exploitation in the next 30 days, higher than 70.6% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 04-04-2023
   PublishedVulnerability first disclosed.
2. 14-02-2025
   Last modifiedVulnerability information updated.

Description

Buffer Overflow found in Nginx NJS allows a remote attacker to execute arbitrary code via the njs_object_property parameter of the njs/njs_vm.c function.

• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.