Multiple vulnerabilities in Redis

Published: 2021-05-04

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-29477 CVE-2021-29478
CWE-ID	CWE-190
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Redis Server applications / Database software
Vendor	Redis Labs

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Integer overflow

EUVDB-ID: #VU52828

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-2021-29477

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

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

The vulnerability exists due to integer overflow in STRALGO LCS command. A remote attacker can pass specially crafted data to the application, trigger integer overflow and execute arbitrary code on the target system.

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

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Redis: 6.0.0 - 6.2.2

External links

http://github.com/redis/redis/releases/tag/6.0.13
http://github.com/redis/redis/releases/tag/6.2.3

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

2) Integer overflow

EUVDB-ID: #VU52829