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CVE-2017-20005

CRITICAL
9.8
CVSS Score
Published: June 6, 2021 at 09:04 PM UTC
Updated: June 17, 2026 at 01:14 AM UTC
2 products affected across 2 vendorsDebian LinuxNGINX

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Severity
CRITICAL9.8
Exploit prediction
EPSS 3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux· Debiandrupal
95%
9.0
NGINX· F5
95%
v < 1.13.6
Affected range stops below 1.13.6, so it looks safe — our inference, not a vendor statement

References (6)

x_refsource_MISCRelease NotesVendor Advisory
Source: [email protected]
http://nginx.org/en/CHANGES
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/nginx/nginx/commit/0206ebe76f748bb39d9de4dd4b3fce777fdfdccf
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/nginx/nginx/commit/b900cc28fcbb4cf5a32ab62f80b59292e1c85b4b
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2021/06/msg00009.html
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20210805-0006/
x_refsource_MISCExploitPatchVendor Advisory
Source: [email protected]
https://trac.nginx.org/nginx/ticket/1368

SSVC — Action Prioritization

SSVCNo known exploitAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

9.8CRITICALCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-190CWE-120

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