VAR-202106-1909

Vulnerability from variot - Updated: 2025-12-18 00:37

NGINX before 1.13.6 has a buffer overflow for years that exceed four digits, as demonstrated by a file with a modification date in 1969 that causes an integer overflow (or a false modification date far in the future), when encountered by the autoindex module. NGINX Exists in an integer overflow vulnerability.Information is obtained, information is tampered with, and service is disrupted (DoS) It may be put into a state. Nginx is a lightweight web server/reverse proxy server and email (IMAP/POP3) proxy server of Nginx Company in the United States. NGINX has a security vulnerability before 1.13.6. The vulnerability stems from the fact that when the autoindex module encounters this file, it will cause an integer overflow. ========================================================================== Ubuntu Security Notice USN-5109-1 October 18, 2021

nginx vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

Ubuntu 16.04 ESM
Ubuntu 14.04 ESM

Summary:

A security issue was fixed in nginx.

Software Description: - nginx: small, powerful, scalable web/proxy server

Details:

It was discovered that nginx incorrectly handled files with certain modification dates. A remote attacker could possibly use this issue to cause a denial of service or other unspecified impact.

Update instructions:

The problem can be corrected by updating your system to the following package versions:

Ubuntu 16.04 ESM: nginx 1.10.3-0ubuntu0.16.04.5+esm2

Ubuntu 14.04 ESM: nginx 1.4.6-1ubuntu3.9+esm3

In general, a standard system update will make all the necessary changes.

References: https://ubuntu.com/security/notices/USN-5109-1 CVE-2017-20005

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        "id": "CNNVD-202106-378"
      }
    ],
    "trust": 0.6
  }
}

CVE-2017-20005 (GCVE-0-2017-20005)

Vulnerability from cvelistv5 – Published: 2021-06-06 21:04 – Updated: 2025-12-05 14:54

Summary

Severity

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-12-04 13:25 UTC

CWE

n/a
CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE-190 - Integer Overflow or Wraparound

Assigner

mitre CNA under the mitre root

CNA scorecard E 29/100 over 2175 records in the last 180 days details

References

6 references

URL	Tags
http://nginx.org/en/CHANGES	x_refsource_MISC
https://trac.nginx.org/nginx/ticket/1368	x_refsource_MISC
https://github.com/nginx/nginx/commit/0206ebe76f7…	x_refsource_MISC
https://github.com/nginx/nginx/commit/b900cc28fcb…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST
https://security.netapp.com/advisory/ntap-2021080…	x_refsource_CONFIRM

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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