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Exploited vulnerability · CISA KEV

Is CVE-2013-1690 exploited? Yes: in CISA KEV since 28 Mar 2022

Gociux · Mozilla Firefox and Thunderbird · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2013-1690, Mozilla Firefox and Thunderbird Denial-of-Service Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 28 Mar 2022, 3197 days after it was published. It affects Mozilla Firefox and Thunderbird. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 28 Mar 2022
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity8.8CVSS 3.1 · high
US federal due18 Apr 2022BOD 22-01 deadline

What it is

Mozilla Firefox and Thunderbird do not properly handle onreadystatechange events in conjunction with page reloading, which allows remote attackers to cause a denial-of-service (DoS) or possibly execute malicious code via a crafted web site.

VendorMozilla (13 exploited CVEs in KEV)
ProductFirefox and Thunderbird
VulnerabilityMozilla Firefox and Thunderbird Denial-of-Service Vulnerability
WeaknessCWE-119
Published26 Jun 2013
Added to KEV28 Mar 2022
Reported by (CNA)mozilla

What to do

  1. Check whether you run it. Look for Firefox and Thunderbird in your asset inventory, including appliances and cloud images. Stack check lists every exploited Mozilla 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 26 Jun 2013.
  4. Get told next time. Email alerts when CISA adds a CVE for Mozilla.

Other exploited CVEs in Firefox and Thunderbird

References

Questions

Is CVE-2013-1690 being exploited?

Yes. CISA added CVE-2013-1690 to the Known Exploited Vulnerabilities catalog on 28 Mar 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2013-1690 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-2013-1690?

Apply updates per vendor instructions. Check Mozilla's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Firefox and Thunderbird 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 March 2022 · Mozilla scorecard · act-now radar.

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