Improper Authentication in mysql (Alpine package)

1) Improper Authentication

EUVDB-ID: #VU32786

Risk: Medium

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:A/U:Green]

CVE-ID: CVE-2012-2122

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: Yes

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

sql/password.c in Oracle MySQL 5.1.x before 5.1.63, 5.5.x before 5.5.24, and 5.6.x before 5.6.6, and MariaDB 5.1.x before 5.1.62, 5.2.x before 5.2.12, 5.3.x before 5.3.6, and 5.5.x before 5.5.23, when running in certain environments with certain implementations of the memcmp function, allows remote attackers to bypass authentication by repeatedly authenticating with the same incorrect password, which eventually causes a token comparison to succeed due to an improperly-checked return value.

Mitigation

Install update from vendor's website.

Vulnerable software versions

mysql (Alpine package): 5.1.49-r0 - 5.1.62-r0

CPE2.3

• cpe:2.3:o:alpine:mysql_alpine_package:5.1.49-r0:*:*:*:*:alpine_linux:*:2.0
• cpe:2.3:o:alpine:mysql_alpine_package:5.1.62-r0:*:*:*:*:alpine_linux:*:2.1

External links

https://git.alpinelinux.org/aports/commit/?id=1f43947917a1a1482a74c8ef7c608259db57794e
https://git.alpinelinux.org/aports/commit/?id=67ea73b4c220b4bf12452ea03c343e8219be8ff4
https://git.alpinelinux.org/aports/commit/?id=425c2beb671273cf734eff0c7621127cbd2428b6
https://git.alpinelinux.org/aports/commit/?id=9e18ca4d001907b1492d62769b4f81e0a2ec4fc9

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. However, a fully functional exploit for this vulnerability is available.