CVE-2021-32675

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Summary

CVECVE-2021-32675
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-10-04 18:15:00 UTC
Updated2023-11-07 03:35:00 UTC
DescriptionRedis is an open source, in-memory database that persists on disk. When parsing an incoming Redis Standard Protocol (RESP) request, Redis allocates memory according to user-specified values which determine the number of elements (in the multi-bulk header) and size of each element (in the bulk header). An attacker delivering specially crafted requests over multiple connections can cause the server to allocate significant amount of memory. Because the same parsing mechanism is used to handle authentication requests, this vulnerability can also be exploited by unauthenticated users. The problem is fixed in Redis versions 6.2.6, 6.0.16 and 5.0.14. An additional workaround to mitigate this problem without patching the redis-server executable is to block access to prevent unauthenticated users from connecting to Redis. This can be done in different ways: Using network access control tools like firewalls, iptables, security groups, etc. or Enabling TLS and requiring users to authenticate using client side certificates.

Risk And Classification

Problem Types: CWE-770

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 10.0 All All All
Operating System Debian Debian Linux 11.0 All All All
Operating System Fedoraproject Fedora 33 All All All
Operating System Fedoraproject Fedora 34 All All All
Operating System Fedoraproject Fedora 35 All All All
Application Netapp Hci - All All All
Application Netapp Management Services For Element Software - All All All
Application Netapp Management Services For Netapp Hci - All All All
Application Oracle Communications Operations Monitor 4.3 All All All
Application Oracle Communications Operations Monitor 4.4 All All All
Application Oracle Communications Operations Monitor 5.0 All All All
Application Redis Redis All All All All

References

ReferenceSourceLinkTags
[SECURITY] Fedora 33 Update: redis-6.0.16-1.fc33 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
Redis: Multiple Vulnerabilities (GLSA 202209-17) — Gentoo security GENTOO security.gentoo.org
[SECURITY] Fedora 33 Update: redis-6.0.16-1.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
Debian -- Security Information -- DSA-5001-1 redis DEBIAN www.debian.org
Oracle Critical Patch Update Advisory - April 2022 MISC www.oracle.com
[SECURITY] Fedora 35 Update: redis-6.2.6-1.fc35 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
DoS vulnerability in Redis · Advisory · redis/redis · GitHub CONFIRM github.com
[geode-notifications] 20211013 [GitHub] [geode] jdeppe-pivotal opened a new pull request #6994: GEODE-9676: Limit array and string sizes for unauthenticated Radish connections lists.apache.org
Pony Mail! MLIST lists.apache.org
October 2021 Redis Vulnerabilities in NetApp Products | NetApp Product Security CONFIRM security.netapp.com
[SECURITY] Fedora 35 Update: redis-6.2.6-1.fc35 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
Prevent unauthenticated client from easily consuming lots of memory (… · redis/redis@5674b00 · GitHub MISC github.com
[SECURITY] Fedora 34 Update: redis-6.2.6-1.fc34 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
FEDORA-2021-61c487f241 FEDORA lists.fedoraproject.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 159435 Oracle Enterprise Linux Security Update for redis:5 (ELSA-2021-3918)
  • 159436 Oracle Enterprise Linux Security Update for redis:6 (ELSA-2021-3945)
  • 178879 Debian Security Update for redis (DSA 5001-1)
  • 178883 Debian Security Update for redis (DLA 2810-1)
  • 183640 Debian Security Update for redis (CVE-2021-32675)
  • 239688 Red Hat Update for redis:5 (RHSA-2021:3918)
  • 239725 Red Hat Update for red hat openstack platform 13.0 (redis) (RHSA-2021:3980)
  • 239726 Red Hat Update for red hat openstack platform 10.0 (redis) (RHSA-2021:3971)
  • 239727 Red Hat Update for rh-redis5-redis (RHSA-2021:3947)
  • 239728 Red Hat Update for redis:5 (RHSA-2021:3946)
  • 239731 Red Hat Update for redis:5 (RHSA-2021:3944)
  • 239733 Red Hat Update for redis:6 (RHSA-2021:3945)
  • 281978 Fedora Security Update for redis (FEDORA-2021-61c487f241)
  • 281979 Fedora Security Update for redis (FEDORA-2021-8913c7900c)
  • 356248 Amazon Linux Security Advisory for redis : ALASREDIS6-2023-007
  • 376213 Redis Server Heap Overflow Vulnerability
  • 500601 Alpine Linux Security Update for redis
  • 501484 Alpine Linux Security Update for redis
  • 501777 Alpine Linux Security Update for redis
  • 504356 Alpine Linux Security Update for redis
  • 710625 Gentoo Linux Redis Multiple Vulnerabilities (GLSA 202209-17)
  • 730745 Redis Server Multiple Vulnerabilities (GHSA-vw22-qm3h-49pr)
  • 751395 OpenSUSE Security Update for redis (openSUSE-SU-2021:3772-1)
  • 900392 Common Base Linux Mariner (CBL-Mariner) Security Update for redis (5968)
  • 900931 Common Base Linux Mariner (CBL-Mariner) Security Update for redis (6848-1)
  • 940139 AlmaLinux Security Update for redis:6 (ALSA-2021:3945)
  • 940141 AlmaLinux Security Update for redis:5 (ALSA-2021:3918)
  • 960683 Rocky Linux Security Update for redis:6 (RLSA-2021:3945)
  • 960717 Rocky Linux Security Update for redis:5 (RLSA-2021:3918)
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