HOMEVULNERABILITIESCVE-2017-20005
CRITICAL

CVE-2017-20005

CWE-190Published: June 6, 2021· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2017-20005 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Debian1 product(s)
debian linux
f51 product(s)
nginx
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/nginx/nginx/commit/0206ebe76f748bb39d9de4dd4b3fce777fdfdccf
PATCHhttps://github.com/nginx/nginx/commit/b900cc28fcbb4cf5a32ab62f80b59292e1c85b4b
PATCHhttps://trac.nginx.org/nginx/ticket/1368
PATCHhttps://github.com/nginx/nginx/commit/0206ebe76f748bb39d9de4dd4b3fce777fdfdccf
PATCHhttps://github.com/nginx/nginx/commit/b900cc28fcbb4cf5a32ab62f80b59292e1c85b4b
PATCHhttps://trac.nginx.org/nginx/ticket/1368
ADVISORYhttp://nginx.org/en/CHANGES
ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/06/msg00009.html
ADVISORYhttps://security.netapp.com/advisory/ntap-20210805-0006/
ADVISORYhttp://nginx.org/en/CHANGES
ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/06/msg00009.html
ADVISORYhttps://security.netapp.com/advisory/ntap-20210805-0006/

All References (12)

→
http://nginx.org/en/CHANGESRelease Notes · Vendor Advisory
→
https://github.com/nginx/nginx/commit/0206ebe76f748bb39d9de4dd4b3fce777fdfdccfPatch · Third Party Advisory
→
https://github.com/nginx/nginx/commit/b900cc28fcbb4cf5a32ab62f80b59292e1c85b4bPatch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2021/06/msg00009.htmlMailing List · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20210805-0006/Third Party Advisory
→
https://trac.nginx.org/nginx/ticket/1368Exploit · Patch · Vendor Advisory
→
http://nginx.org/en/CHANGESRelease Notes · Vendor Advisory
→
https://github.com/nginx/nginx/commit/0206ebe76f748bb39d9de4dd4b3fce777fdfdccfPatch · Third Party Advisory
→
https://github.com/nginx/nginx/commit/b900cc28fcbb4cf5a32ab62f80b59292e1c85b4bPatch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2021/06/msg00009.htmlMailing List · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20210805-0006/Third Party Advisory
→
https://trac.nginx.org/nginx/ticket/1368Exploit · Patch · Vendor Advisory

Quick Facts

CVE IDCVE-2017-20005
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-190
CISA KEVNo
Affected2 vendor(s)
PublishedJun 6, 2021

Related CVEs (CWE-190)

CVE-2015-5097
10.0
CVE-2010-3254
10.0
CVE-2008-2663
10.0
CVE-2026-24814
10.0
CVE-2010-1233
10.0
CVE-2015-5108
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2017-20005 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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