Buffer overflow in Redislabs Redis

CVE-2021-3470

A heap overflow issue was found in Redis in versions before 5.0.10, before 6.0.9 and before 6.2.0 when using a heap allocator other than jemalloc or glibc's malloc, leading to potential out of bound write or process crash. Effectively this flaw does not affect the vast majority of users, who use jemalloc or glibc malloc.

Vulnerability class: Buffer Overflow

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.011 (66.2th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 66.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-3470: held from 0.011 to 0.011.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

  • Redislabs Redis — versions 6.2.0
  • Redis — versions redis 5.0.10, redis 6.0.9, redis 6.2.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-3470?
CVE-2021-3470 is a medium-severity vulnerability in Redislabs Redis, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2021-03-31.
How severe is CVE-2021-3470?
Medium severity. CVSS v3 base score is 5.3 out of 10.