Actively exploited · Published Oct 22, 2021 · Assigned by mitre
CVE-2021-42258
Critical 9.8 Exploited Ransomware
In plain English
A critical-severity SQL injection in BillQuick Web Suite from BQE. Attackers are actively exploiting it in the wild (listed by CISA on November 3, 2021). It has been used in ransomware campaigns. The chance it is exploited in the next 30 days is estimated at 75.2% (higher than 99.5% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit, Nuclei. Apply updates per vendor instructions.
CISA guidance
Apply updates per vendor instructions.
Federal agencies must remediate by Nov 17, 2021.
Official description
BQE BillQuick Web Suite 2018 through 2021 before 22.0.9.1 allows SQL injection for unauthenticated remote code execution, as exploited in the wild in October 2021 for ransomware installation. SQL injection can, for example, use the txtID (aka username) parameter. Successful exploitation can include the ability to execute arbitrary code as MSSQLSERVER$ via xp_cmdshell.
Affected products (as reported)
Weakness: CWE-89 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H