#VU57035 Out-of-bounds read in Redis - CVE-2021-32672

Vulnerability identifier: #VU57035

Vulnerability risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-32672

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Redis
Server applications / Database software

Vendor: Redis Labs

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition, related to Lua Debugger. A remote attacker can read random data from heap.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Redis: 5.0.0 - 5.0.13, 6.0.0 - 6.0.15, 6.2.0 - 6.2.5

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

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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.