CVE-2021-29478: Vulnerability in the COPY command for large intsets
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 6.2 before 6.2.3 could be exploited to corrupt the heap and potentially result with remote code execution. Redis 6.0 and earlier are not directly affected by this issue. The problem is fixed in version 6.2.3. An additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from modifying the set-max-intset-entries configuration parameter. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command.
Affected Software
Remediation
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Event History
Frequently Asked Questions
What is the vulnerability ID for this Redis flaw?
The vulnerability ID for this Redis flaw is CVE-2021-29478.
What is Redis?
Redis is an open source (BSD licensed), in-memory data structure store, used as a database, cache, and message broker.
What is the severity of CVE-2021-29478?
The severity of CVE-2021-29478 is high, with a CVSS score of 8.8.
How can CVE-2021-29478 be exploited?
CVE-2021-29478 can be exploited using an integer overflow bug in Redis version 6.2 before 6.2.3, which could potentially result in remote code execution.
How do I fix CVE-2021-29478?
To fix CVE-2021-29478, update Redis to version 6.2.3 or later.