CVE-2021-29477
High
Description
Redis is an open source (BSD licensed), in-memory data structure store, used as a database, cache, and message broker. An integer overflow bug in Redis version 6.0 or newer could be exploited using the `STRALGO LCS` command to corrupt the heap and potentially result with remote code execution. The problem is fixed in version 6.2.3 and 6.0.13. An additional workaround to mitigate the problem without patching the redis-server executable is to use ACL configuration to prevent clients from using the `STRALGO LCS` command.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Redis
PublishedMay 4, 2021
First seenMay 4, 2021
Weakness typeCWE-190Integer overflow
How to fix
Update
- redislabs redis6.0.13, 6.2.3 or later
Vendor advisories
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EZJ6JGQ2ETZB2DWTQSGCOGG7EF3ILV4V/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BPWBIZXA67JFIB63W2CNVVILCGIC2ME5/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BHWOF7CBVUGDK3AN6H3BN3VNTH2TDUZZ/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SN7INTZFE34MIQJO7WDDTIY5LIBGN6GI/
- security.gentoo.org/glsa/202107-20
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| redislabs redis | 6.0.0 ≤ v < 6.0.13, 6.2.0 ≤ v < 6.2.3 | 6.0.13, 6.2.3 |
| fedoraproject fedora | 33, 34 | — |
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