Permissions, Privileges, and Access Controls in phpmyadmin (Alpine package)

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU33348

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-9849

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

An issue was discovered in phpMyAdmin. It is possible to bypass AllowRoot restriction ($cfg['Servers'][$i]['AllowRoot']) and deny rules for username by using Null Byte in the username. All 4.6.x versions (prior to 4.6.5), 4.4.x versions (prior to 4.4.15.9), and 4.0.x versions (prior to 4.0.10.18) are affected.

Mitigation

Install update from vendor's website.

Vulnerable software versions

phpmyadmin (Alpine package): 4.0.4.1-r0 - 4.4.15.8-r0

CPE2.3

• cpe:2.3:o:alpine:phpmyadmin_alpine_package:4.0.9-r0:*:*:*:*:alpine_linux:*:
• cpe:2.3:o:alpine:phpmyadmin_alpine_package:4.0.9-r1:*:*:*:*:alpine_linux:*:
• cpe:2.3:o:alpine:phpmyadmin_alpine_package:4.0.10.1-r0:*:*:*:*:alpine_linux:*:

External links

http://git.alpinelinux.org/aports/commit/?id=e3226bf79b872494874e7f139d2c88c069c4d60f
http://git.alpinelinux.org/aports/commit/?id=3c5da8c4643bf2ec21c87b1c68b3ad2c149fc3b9
http://git.alpinelinux.org/aports/commit/?id=b36b3560d17cde1b9b07e17906ea6b7612b04cce
http://git.alpinelinux.org/aports/commit/?id=3e72f91bb20ef89058467b81ddaf2c5793af3ec9
http://git.alpinelinux.org/aports/commit/?id=517afce6b9a2a1a80adab744a77278db53d919f7
http://git.alpinelinux.org/aports/commit/?id=a35fc5fa306c1b74cf13f5f8a6624b47b0409a82

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.