Vulnerability identifier: #VU57031

Vulnerability risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-32687

CWE-ID: CWE-190

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Redis
Server applications / Database software

Vendor: Redis Labs

Description

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

The vulnerability exists due to integer overflow when handling intsets, if set-max-intset-entries is manually configured to a non-default, very large value. A remote attacker can pass specially crafted data to the application, trigger an 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: 6.2.0 - 6.2.5, 6.0.0 - 6.0.15, 5.0.0 - 5.0.13

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CPE

• cpe:2.3:a:redis_labs:redis:6.2.5:*:*:*:*:*:*:*

External links
http://github.com/redis/redis/releases/tag/5.0.14
http://github.com/antirez/redis/releases/tag/6.0.16
http://github.com/antirez/redis/releases/tag/6.2.6

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?