CVE-2021-32765

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Summary

CVECVE-2021-32765
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-10-04 21:15:00 UTC
Updated2022-12-07 01:52:00 UTC
DescriptionHiredis 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.

Risk And Classification

Problem Types: CWE-190

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 9.0 All All All
Application Netapp Management Services For Element Software And Netapp Hci - All All All
Application Redis Hiredis All All All All

References

ReferenceSourceLinkTags
Integer Overflow to Buffer Overflow in hiredis · Advisory · redis/hiredis · GitHub CONFIRM github.com
[SECURITY] [DLA 2783-1] hiredis security update MLIST lists.debian.org
Fix for integer/buffer overflow CVE-2021-32765 · redis/hiredis@76a7b10 · GitHub MISC github.com
October 2021 Redis Vulnerabilities in NetApp Products | NetApp Product Security CONFIRM security.netapp.com
MEM07-C. Ensure that the arguments to calloc(), when multiplied, do not wrap - SEI CERT C Coding Standard - Confluence MISC wiki.sei.cmu.edu
hiredis, hiredis-py: Multiple Vulnerabilities (GLSA 202210-32) — Gentoo security GENTOO security.gentoo.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 178832 Debian Security Update for hiredis (DLA 2783-1)
  • 183894 Debian Security Update for hiredis (CVE-2021-32765)
  • 282306 Fedora Security Update for hiredis (FEDORA-2022-ec83686a30)
  • 356261 Amazon Linux Security Advisory for hiredis : ALASREDIS6-2023-004
  • 690856 Free Berkeley Software Distribution (FreeBSD) Security Update for hiredis (2220827b-c732-11ec-b272-901b0e934d69)
  • 710650 Gentoo Linux hiredis, hiredis-py Multiple Vulnerabilities (GLSA 202210-32)
  • 751463 OpenSUSE Security Update for hiredis (openSUSE-SU-2021:1536-1)
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