Paper/Archive/CVE-2021-42258

CVE-2021-42258

BQE BillQuick Web Suite — BQE BillQuick Web Suite SQL Injection Vulnerability

KEV · due 17 Nov ransomware use EPSS 75%public exploit SSVC act CVSS 9.8

CVSS 9.8 (ADP)9.8 / 10 × 3029.4 In CISA KEV+3030.0 EPSS percentile 99.5.995 × 2019.9 Exploit: SSVC active+1010.0 SSVC exploitation: active+1010.0

Description · from the CVE record

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

ProductAffectedFixed inSource

n/an/a–CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA ADPSSVCExploitation: active · Automatable: yes · Technical impact: total

References

refhuntress.com/blog/threat-advisory-hackers-are-exploiting-a-vulnerability-in-popular-billing-software-to-deploy-ransomware refcisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-42258 kevcisa.gov/known-exploited-vulnerabilities-catalog