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Exploited vulnerability · CISA KEV

Is CVE-2019-16278 exploited? Yes: in CISA KEV since 7 Nov 2024

Gociux · Nostromo nhttpd · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2019-16278, Nostromo nhttpd Directory Traversal Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 7 Nov 2024, 1851 days after it was published. It affects Nostromo nhttpd. If you run it, CISA's required action is: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

exploitedYesCISA KEV · 7 Nov 2024
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity9.8CVSS 3.1 · critical
US federal due28 Nov 2024BOD 22-01 deadline

What it is

Nostromo nhttpd contains a directory traversal vulnerability in the http_verify() function in a non-chrooted nhttpd server allowing for remote code execution.

VendorNostromo (1 exploited CVE in KEV)
Productnhttpd
VulnerabilityNostromo nhttpd Directory Traversal Vulnerability
WeaknessCWE-22
Published14 Oct 2019
Added to KEV7 Nov 2024
Reported by (CNA)mitre

What to do

  1. Check whether you run it. Look for nhttpd in your asset inventory, including appliances and cloud images. Stack check lists every exploited Nostromo CVE at once.
  2. Apply the fix. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
  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 14 Oct 2019.
  4. Get told next time. Email alerts when CISA adds a CVE for Nostromo.

References

Questions

Is CVE-2019-16278 being exploited?

Yes. CISA added CVE-2019-16278 to the Known Exploited Vulnerabilities catalog on 7 Nov 2024, which means there is reliable evidence of exploitation in the wild.

Is CVE-2019-16278 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-2019-16278?

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Check Nostromo's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected nhttpd 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 2024 · act-now radar.

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