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Gentoo Linux: CVE-2021-32765: hiredis, hiredis-py: Multiple Vulnerabilities

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Gentoo Linux: CVE-2021-32765: hiredis, hiredis-py: Multiple Vulnerabilities

Severity
7
CVSS
(AV:N/AC:L/Au:S/C:P/I:P/A:P)
Published
10/04/2021
Created
10/31/2022
Added
10/31/2022
Modified
10/31/2022

Description

Hiredis is a minimalistic C client library for the Redis database. In affected versions Hiredis 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](https://github.com/redis/hiredis#reader-max-array-elements) context option to a value small enough that no overflow is possible.

Solution(s)

  • gentoo-linux-upgrade-dev-libs-hiredis
  • gentoo-linux-upgrade-dev-python-hiredis

References

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