#VU13401 Buffer overflow in Redis - CVE-2018-12326

Vulnerability identifier: #VU13401

Vulnerability risk: Low

CVSSv4.0: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/U:Clear]

CVE-ID: CVE-2018-12326

CWE-ID: CWE-120

Exploitation vector: Local

Exploit availability: Yes

Vulnerable software:
Redis
Server applications / Database software

Vendor: Salvatore Sanfilippo

Description

The vulnerability allows a local attacker to gain elevated privileges on the target system.

The vulnerability exists due to a buffer overflow condition in the redis-clicomponent. A local attacker can execute a specially crafted command that submits malicious input, trigger memory corruption and execute arbitrary code with elevated privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Update to version 4.0.10, 5.0 RC3.

Vulnerable software versions

Redis: 4.0.0 - 5.0

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External links
https://raw.githubusercontent.com/antirez/redis/4.0/00-RELEASENOTES
https://raw.githubusercontent.com/antirez/redis/5.0/00-RELEASENOTES

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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. However, proof of concept for this vulnerability is available.