CVE-2021-32765 log

Severity High
Remote Yes
Type Arbitrary code execution
Hiredis before version 1.0.1 is vulnurable to integer overflow if provided maliciously crafted or corrupted RESP mult-bulk protocol data.

When parsing multi-bulk (array-like) replies, hiredis fails to check if count * sizeof(redisReply*) can be represented in SIZE_MAX. If it can not, and the calloc() call doesn't itself make this check, it would result in a short allocation and subsequent buffer overflow.

Users of hiredis who are unable to update may set the maxelements context option to a value small enough that no overflow is possible.
Group Package Affected Fixed Severity Status Ticket
AVG-2441 hiredis 1.0.0-1 1.0.1-1 High Fixed