CVE-2021-29477: Vulnerability in the STRALGO LCS command
A flaw was found in redis. An integer overflow bug could be exploited to corrupt the heap and potentially result with remote code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Other sources
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.
Affected Software
Remediation
Information
Event History
Parent advisories
This vulnerability appears in the following advisories.
Frequently Asked Questions
What is CVE-2021-29477?
CVE-2021-29477 is a vulnerability in Redis version 6.0 or newer that could be exploited to corrupt the heap and potentially result in remote code execution.
How severe is CVE-2021-29477?
CVE-2021-29477 has a severity rating of 8.8, which is considered high.
Which versions of Redis are affected by CVE-2021-29477?
Redis versions 6.0 or newer, up to and including version 6.2.3, are affected by CVE-2021-29477.
How can CVE-2021-29477 be fixed?
To fix CVE-2021-29477, update Redis to version 6.2.3 if you are using version 6.0 or newer.
Where can I find more information about CVE-2021-29477?
You can find more information about CVE-2021-29477 on the Redis.io website, the GitHub security advisories page, and the Red Hat Bugzilla page.