Denial of service in Hiredis library for Redis

Published: 2020-01-16 | Updated: 2020-08-04
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-7105
Exploitation vector Network
Public exploit N/A
Vulnerable software
Universal components / Libraries / Libraries used by multiple products

Vendor Redis Labs

Security Bulletin

This security bulletin contains information about 1 vulnerabilities.

Updated 04.08.2020

Added fixed version.

1) NULL pointer dereference

EUVDB-ID: #VU24357

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-7105

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in "async.c" and "dict.c" in "libhiredis.a" because malloc return values are unchecked. A remote attacker can perform a denial of service (DoS) attack.


Install updates from vendor's website.

Vulnerable software versions

Hiredis: 0.0.1 - 0.14.0

CPE2.3 External links

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.