Heap-based buffer overflow in memcached (Alpine package)

1) Heap-based buffer overflow

EUVDB-ID: #VU4140

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2016-8706

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists in the process_bin_sasl_auth() function due to integer overflow. A remote attacker can send specially crafted Memcached binary protocol commands, trigger heap-based buffer overflow and execute arbitrary code.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Install update from vendor's website.

Vulnerable software versions

memcached (Alpine package): 1.4.25-r2 - 1.4.32-r0

CPE2.3

• cpe:2.3:a:alpine:memcached_alpine_package:1.4.25-r2:*:*:*:*:alpine_linux:*:3.3
• cpe:2.3:a:alpine:memcached_alpine_package:1.4.32-r0:*:*:*:*:alpine_linux:*:3.4

External links

https://git.alpinelinux.org/aports/commit/?id=ffbc207515e6c9e7c3184fb12c1ae8b8e5596a9e
https://git.alpinelinux.org/aports/commit/?id=a4354fb67cc359513d95c5b0233cd3d90e21ad78
https://git.alpinelinux.org/aports/commit/?id=eff24145e92ae8c015cb86c2fd808311821f1d55

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.