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Exploited vulnerability · CISA KEV

Is CVE-2021-42258 exploited? Yes: in CISA KEV since 3 Nov 2021

Gociux · BQE BillQuick Web Suite · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2021-42258, BQE BillQuick Web Suite SQL Injection Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 3 Nov 2021, 12 days after it was published. It is known to be used in ransomware campaigns. It affects BQE BillQuick Web Suite. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 3 Nov 2021
ransomwareKnownused in campaigns
EPSStop 1%among the most likely CVEs to be exploited
severity9.8CVSS 3.1 · critical
US federal due17 Nov 2021BOD 22-01 deadline

What it is

BQE BillQuick Web Suite contains an SQL injection vulnerability when accessing the username parameter that may allow for unauthenticated, remote code execution.

VendorBQE (1 exploited CVE in KEV)
ProductBillQuick Web Suite
VulnerabilityBQE BillQuick Web Suite SQL Injection Vulnerability
WeaknessCWE-89
Published22 Oct 2021
Added to KEV3 Nov 2021
Reported by (CNA)mitre

What to do

  1. Check whether you run it. Look for BillQuick Web Suite in your asset inventory, including appliances and cloud images. Stack check lists every exploited BQE CVE at once.
  2. Apply the fix. Apply updates per vendor instructions.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 22 Oct 2021.
  4. Get told next time. Email alerts when CISA adds a CVE for BQE.

References

Questions

Is CVE-2021-42258 being exploited?

Yes. CISA added CVE-2021-42258 to the Known Exploited Vulnerabilities catalog on 3 Nov 2021, which means there is reliable evidence of exploitation in the wild.

Is CVE-2021-42258 used in ransomware attacks?

Yes, CISA lists it as known to be used in ransomware campaigns.

How do I fix CVE-2021-42258?

Apply updates per vendor instructions. Check BQE's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected BillQuick Web Suite and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in November 2021 · act-now radar.

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