CVE-2022-32548: draytek vigor1000b_firmware Classic Buffer Overflow

Vulnerability summary

CVE-2022-32548 is a critical (CVSS 10.0) Classic Buffer Overflow vulnerability in draytek vigor1000b_firmware. EPSS estimates a 33.99% chance of exploitation in the next 30 days, higher than 98.3% of scored vulnerabilities. 2 public exploits are recorded.

Timeline

1. 29-08-2022
   PublishedVulnerability first disclosed.
2. 03-08-2024
   Last modifiedVulnerability information updated.

Description

An issue was discovered on certain DrayTek Vigor routers before July 2022 such as the Vigor3910 before 4.3.1.1. /cgi-bin/wlogin.cgi has a buffer overflow via the username or password to the aa or ab field.

• 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.