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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2021-41099

Integer overflow issue with strings in Redis

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Status
Published
Published
Updated
Assigning organization
GitHub_M

Description

Redis is an open source, in-memory database that persists on disk. An integer overflow bug in the underlying string library can be used to corrupt the heap and potentially result with denial of service or remote code execution. The vulnerability involves changing the default proto-max-bulk-len configuration parameter to a very large value and constructing specially crafted network payloads or commands. The problem is fixed in Redis versions 6.2.6, 6.0.16 and 5.0.14. An additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from modifying the proto-max-bulk-len configuration parameter. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

redis redis

  • < 5.0.14affected
  • >= 6.0.0, < 6.0.16affected
  • >= 6.2.0, 6.2.6affected

References