What is CVE-2021-22982?

CVE-2021-22982 is a high-severity vulnerability in F5 Big-Ip Domain Name System, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.2/10. Published 2021-02-12.

How severe is CVE-2021-22982?

High severity. CVSS v3 base score is 7.2 out of 10.

Buffer overflow in F5 Big-Ip Domain Name System

CVE-2021-22982

On BIG-IP DNS and GTM version 13.1.x before 13.1.0.4, and all versions of 12.1.x and 11.6.x, big3d does not securely handle and parse certain payloads resulting in a buffer overflow. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

Vulnerability class: Buffer Overflow

EPSS: 0.010 (59.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

F5 Big-ip_domain_name_system
F5 Big-ip_global_traffic_manager
N/a Big-ip Dns And Gtm — versions 13.1.x before 13.1.0.4, and all versions of 12.1.x and 11.6.x

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

f5sirt@f5.com (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-22982?: CVE-2021-22982 is a high-severity vulnerability in F5 Big-Ip Domain Name System, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.2/10. Published 2021-02-12.
How severe is CVE-2021-22982?: High severity. CVSS v3 base score is 7.2 out of 10.