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Exploited vulnerability · CISA KEV

Is CVE-2019-16256 exploited? Yes: in CISA KEV since 3 Nov 2021

Gociux · SIMalliance Toolbox Browser · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2019-16256, SIMalliance Toolbox Browser Command Injection Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 3 Nov 2021, 783 days after it was published. It affects SIMalliance Toolbox Browser. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 3 Nov 2021
ransomwareNot knownno confirmed use
EPSStop 10%more likely than most to be exploited
severity9.8CVSS 3.1 · critical
US federal due3 May 2022BOD 22-01 deadline

What it is

SIMalliance Toolbox Browser contains an command injection vulnerability that could allow remote attackers to retrieve location and IMEI information or execute a range of other attacks by modifying the attack message.

VendorSIMalliance (1 exploited CVE in KEV)
ProductToolbox Browser
VulnerabilitySIMalliance Toolbox Browser Command Injection Vulnerability
Weaknessnot specified
Published12 Sep 2019
Added to KEV3 Nov 2021
Reported by (CNA)mitre

What to do

  1. Check whether you run it. Look for Toolbox Browser in your asset inventory, including appliances and cloud images. Stack check lists every exploited SIMalliance 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 12 Sep 2019.
  4. Get told next time. Email alerts when CISA adds a CVE for SIMalliance.

References

Questions

Is CVE-2019-16256 being exploited?

Yes. CISA added CVE-2019-16256 to the Known Exploited Vulnerabilities catalog on 3 Nov 2021, which means there is reliable evidence of exploitation in the wild.

Is CVE-2019-16256 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2019-16256?

Apply updates per vendor instructions. Check SIMalliance's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Toolbox Browser 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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