Infinite loop in php7 (Alpine package)

Published: 2018-01-20

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2018-5711
CWE-ID	CWE-835
Exploitation vector	Local
Public exploit	N/A
Vulnerable software	php7 (Alpine package) Operating systems & Components / Operating system package or component
Vendor	Alpine Linux Development Team

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Infinite loop

EUVDB-ID: #VU10390

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-5711

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

Description

The disclosed vulnerability allows a local unauthenticated attacker to cause DoS condition.

The vulnerability exists in PHP GD Graphics Library due to insufficient sanitization of user-supplied data. A local attacker can submit a specially crafted GIF, trigger an infinite loop and cause the service to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

php7 (Alpine package): 7.0.7-r0 - 7.0.25-r0

CPE2.3

External links

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.