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osvGoogleOSV:RLSA-2021:3918
HistoryOct 19, 2021 - 1:14 p.m.

Important: redis:5 security update

2021-10-1913:14:11
Google
osv.dev
14
redis
security update
lua scripts
heap-based lua stack
integer overflow
streams
ziplist data structure
denial of service
redis standard protocol
intsets
strings
cve-2021-32626
cve-2021-32627
cve-2021-32628
cve-2021-32675
cve-2021-32687
cve-2021-41099

AI Score

9.1

Confidence

High

EPSS

0.023

Percentile

89.9%

Redis is an advanced key-value store. It is often referred to as a data-structure server since keys can contain strings, hashes, lists, sets, and sorted sets. For performance, Redis works with an in-memory data set. You can persist it either by dumping the data set to disk every once in a while, or by appending each command to a log.

Security Fix(es):

  • redis: Lua scripts can overflow the heap-based Lua stack (CVE-2021-32626)

  • redis: Integer overflow issue with Streams (CVE-2021-32627)

  • redis: Integer overflow bug in the ziplist data structure (CVE-2021-32628)

  • redis: Denial of service via Redis Standard Protocol (RESP) request (CVE-2021-32675)

  • redis: Integer overflow issue with intsets (CVE-2021-32687)

  • redis: Integer overflow issue with strings (CVE-2021-41099)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.