Out-of-bounds read in php (Alpine package)

Published: 2017-07-07

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2017-9224
CWE-ID	CWE-125
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	php (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) Out-of-bounds read

EUVDB-ID: #VU7345

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-9224

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information.

The weakness exists in the mbstring due to stack out-of-bounds read in match_at() during regular expression searching. A remote attacker can trigger a logical error involving order of validation and access in match_at() and read arbitrary files on the system.

Successful exploitation of the vulnerability results in information disclosure.

Mitigation

Install update from vendor's website.

Vulnerable software versions

php (Alpine package): 5.6.30-r0

External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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