CVE-2019-16278

Nostromo nhttpd: Directory Traversal

As of , CVE-2019-16278 in Nostromo nhttpd is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.

Exploited
Yes: CISA listed it on 7 November 2024
US federal deadline
28 November 202421 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Not known to CISA
EPSS score
0.99Higher than 99% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
0.97 on 7 November 2024EPSS on the day CISA listed it.
Public exploit
1 Metasploit module and 2 Exploit-DB entries (2 verified)
Fix
Vendor advice: www.nazgul.chLinks below, from CISA's entry.

What CISA says to do

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CISA's required action

What the flaw is

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

CISA's description

Directory Traversal in the function http_verify in nostromo nhttpd through 1.9.6 allows an attacker to achieve remote code execution via a crafted HTTP request.

The CVE record's description, from mitre

CVE published
14 October 2019
Assigned by
mitre
CVSS
9.8 Critical (CVSS 3.1, from CISA-ADP)
CWE-22
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CISA SSVC, exploitation
active
CISA SSVC, automatable
yes
CISA SSVC, technical impact
total

Timeline

  1. The CVE record was published.
  2. Exploit-DB published an exploit (EDB-ID 47573).
  3. Exploit-DB published an exploit (EDB-ID 47837).
  4. CISA added it to its list of exploited vulnerabilities.
  5. The US federal deadline to fix it.

Public exploits

Facts from Metasploit's module list and Exploit-DB's index; we never copy exploit code.

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