# CVE-2021-32687: redis: Redis is an advanced key-value store

CVE-2021-32687 is fixed in 6 products on 1 platform, first by redis 5:4.0.9-1ubuntu0.2+esm3, released October 4, 2021. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2021-32687
- Priority: High
- CVSS: 7.5 (Important)
- EPSS: 0.0409
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 4, 2021

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | redis RHEL 8 | 0:6.0.9-5.module+el8.4.0+12929+1bb0d2aa | [RHSA-2021:3945](https://patchblox.com/security/data/fix/linux/rhsa-2021-3945.md) | Oct 20, 2021 |
| Linux | redis Ubuntu 18.04.6 LTS (bionic) | 5:4.0.9-1ubuntu0.2+esm3 | [redis 5:4.0.9-1ubuntu0.2+esm3](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-redis-5-4.0.9-1ubuntu0.2-esm3.md) | Oct 4, 2021 |
| Linux | redis Ubuntu 20.04 LTS (focal) | 5:5.0.7-2ubuntu0.1+esm1 | [redis 5:5.0.7-2ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-redis-5-5.0.7-2ubuntu0.1-esm1.md) | Oct 4, 2021 |
| Linux | redis ol 8 | 0:5.0.3-5.module+el8.4.0+20382+7694043a | [ELSA-2021-3918](https://patchblox.com/security/data/fix/linux/elsa-2021-3918.md) | Oct 19, 2021 |
| Linux | redis-devel RHEL 8 | 0:6.0.9-5.module+el8.4.0+12929+1bb0d2aa | [RHSA-2021:3945](https://patchblox.com/security/data/fix/linux/rhsa-2021-3945.md) | Oct 20, 2021 |
| Linux | redis-devel ol 8 | 0:5.0.3-5.module+el8.4.0+20382+7694043a | [ELSA-2021-3918](https://patchblox.com/security/data/fix/linux/elsa-2021-3918.md) | Oct 19, 2021 |
| Linux | redis-doc RHEL 8 | 0:6.0.9-5.module+el8.4.0+12929+1bb0d2aa | [RHSA-2021:3945](https://patchblox.com/security/data/fix/linux/rhsa-2021-3945.md) | Oct 20, 2021 |
| Linux | redis-doc ol 8 | 0:5.0.3-5.module+el8.4.0+20382+7694043a | [ELSA-2021-3918](https://patchblox.com/security/data/fix/linux/elsa-2021-3918.md) | Oct 19, 2021 |
| Linux | redis-sentinel Ubuntu 18.04.6 LTS (bionic) | 5:4.0.9-1ubuntu0.2+esm3 | [redis-sentinel 5:4.0.9-1ubuntu0.2+esm3](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-redis-sentinel-5-4.0.9-1ubuntu0.2-esm3.md) | Oct 4, 2021 |
| Linux | redis-sentinel Ubuntu 20.04 LTS (focal) | 5:5.0.7-2ubuntu0.1+esm1 | [redis-sentinel 5:5.0.7-2ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-redis-sentinel-5-5.0.7-2ubuntu0.1-esm1.md) | Oct 4, 2021 |
| Linux | redis-server Ubuntu 18.04.6 LTS (bionic) | 5:4.0.9-1ubuntu0.2+esm3 | [redis-server 5:4.0.9-1ubuntu0.2+esm3](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-redis-server-5-4.0.9-1ubuntu0.2-esm3.md) | Oct 4, 2021 |
| Linux | redis-server Ubuntu 20.04 LTS (focal) | 5:5.0.7-2ubuntu0.1+esm1 | [redis-server 5:5.0.7-2ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-redis-server-5-5.0.7-2ubuntu0.1-esm1.md) | Oct 4, 2021 |
| Linux | redis-tools Ubuntu 18.04.6 LTS (bionic) | 5:4.0.9-1ubuntu0.2+esm3 | [redis-tools 5:4.0.9-1ubuntu0.2+esm3](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-redis-tools-5-4.0.9-1ubuntu0.2-esm3.md) | Oct 4, 2021 |
| Linux | redis-tools Ubuntu 20.04 LTS (focal) | 5:5.0.7-2ubuntu0.1+esm1 | [redis-tools 5:5.0.7-2ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-redis-tools-5-5.0.7-2ubuntu0.1-esm1.md) | Oct 4, 2021 |

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