CVE Vulnerabilities

CVE-2017-11142

Uncontrolled Resource Consumption

Published: Jul 10, 2017 | Modified: Apr 20, 2025
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
7.8 HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C
RedHat/V2
RedHat/V3
5.3 LOW
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Ubuntu
LOW

In PHP before 5.6.31, 7.x before 7.0.17, and 7.1.x before 7.1.3, remote attackers could cause a CPU consumption denial of service attack by injecting long form variables, related to main/php_variables.c.

Weakness

The product does not properly control the allocation and maintenance of a limited resource.

Affected Software

Name Vendor Start Version End Version
Php Php * 5.6.30 (including)
Php Php 7.0.0 (including) 7.0.0 (including)
Php Php 7.0.1 (including) 7.0.1 (including)
Php Php 7.0.2 (including) 7.0.2 (including)
Php Php 7.0.3 (including) 7.0.3 (including)
Php Php 7.0.4 (including) 7.0.4 (including)
Php Php 7.0.5 (including) 7.0.5 (including)
Php Php 7.0.6 (including) 7.0.6 (including)
Php Php 7.0.7 (including) 7.0.7 (including)
Php Php 7.0.8 (including) 7.0.8 (including)
Php Php 7.0.9 (including) 7.0.9 (including)
Php Php 7.0.10 (including) 7.0.10 (including)
Php Php 7.0.11 (including) 7.0.11 (including)
Php Php 7.0.12 (including) 7.0.12 (including)
Php Php 7.0.13 (including) 7.0.13 (including)
Php Php 7.0.14 (including) 7.0.14 (including)
Php Php 7.0.15 (including) 7.0.15 (including)
Php Php 7.0.16 (including) 7.0.16 (including)
Php Php 7.1.0 (including) 7.1.0 (including)
Php Php 7.1.1 (including) 7.1.1 (including)
Php Php 7.1.2 (including) 7.1.2 (including)
Php5 Ubuntu upstream *
Php7.0 Ubuntu upstream *
Php7.0 Ubuntu yakkety *
Php7.1 Ubuntu upstream *

Potential Mitigations

  • Mitigation of resource exhaustion attacks requires that the target system either:

  • The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.

  • The second solution is simply difficult to effectively institute – and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.

References