// For flags

CVE-2016-4450

nginx: NULL pointer dereference while writing client request body

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

os/unix/ngx_files.c in nginx before 1.10.1 and 1.11.x before 1.11.1 allows remote attackers to cause a denial of service (NULL pointer dereference and worker process crash) via a crafted request, involving writing a client request body to a temporary file.

os/unix/ngx_files.c en nginx en versiones anteriores a 1.10.1 y 1.11.x en versiones anteriores a 1.11.1 permite a atacantes remotos provocar una denegación de servicio (referencia a puntero NULL y caída de proceso worker) a través de una petición manipulada, implicando la escritura de una petición de cuerpo de cliente en un archivo temporal.

A NULL pointer dereference flaw was found in the nginx code responsible for saving client request body to a temporary file. A remote attacker could send a specially crafted request that would cause nginx worker process to crash.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2016-05-02 CVE Reserved
  • 2016-06-01 CVE Published
  • 2024-08-06 CVE Updated
  • 2024-09-07 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-476: NULL Pointer Dereference
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Canonical
Search vendor "Canonical"
Ubuntu Linux
Search vendor "Canonical" for product "Ubuntu Linux"
14.04
Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04"
esm
Affected
Canonical
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Ubuntu Linux
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15.10
Search vendor "Canonical" for product "Ubuntu Linux" and version "15.10"
-
Affected
Canonical
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Ubuntu Linux
Search vendor "Canonical" for product "Ubuntu Linux"
16.04
Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04"
lts
Affected
F5
Search vendor "F5"
Nginx
Search vendor "F5" for product "Nginx"
>= 1.3.9 < 1.10.1
Search vendor "F5" for product "Nginx" and version " >= 1.3.9 < 1.10.1"
-
Affected
F5
Search vendor "F5"
Nginx
Search vendor "F5" for product "Nginx"
1.11.0
Search vendor "F5" for product "Nginx" and version "1.11.0"
-
Affected
Debian
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Debian Linux
Search vendor "Debian" for product "Debian Linux"
8.0
Search vendor "Debian" for product "Debian Linux" and version "8.0"
-
Affected