Vulnerability Name:

CVE-2021-32675 (CCN-210727)

Assigned:2021-10-04
Published:2021-10-04
Updated:2022-10-06
Summary:Redis 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.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
7.5 High (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-770
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2021-32675

Source: XF
Type: UNKNOWN
redis-cve202132675-dos(210727)

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/redis/redis/commit/5674b0057ff2903d43eaff802017eddf37c360f8

Source: CCN
Type: Redis GIT Repository
DoS vulnerability in Redis

Source: CONFIRM
Type: Third Party Advisory
https://github.com/redis/redis/security/advisories/GHSA-f6pw-v9gw-v64p

Source: MLIST
Type: Patch, Third Party Advisory
[geode-notifications] 20211013 [GitHub] [geode] jdeppe-pivotal opened a new pull request #6994: GEODE-9676: Limit array and string sizes for unauthenticated Radish connections

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-61c487f241

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-8913c7900c

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-aa94492a09

Source: GENTOO
Type: Third Party Advisory
GLSA-202209-17

Source: CONFIRM
Type: Third Party Advisory
https://security.netapp.com/advisory/ntap-20211104-0003/

Source: DEBIAN
Type: Third Party Advisory
DSA-5001

Source: CCN
Type: IBM Security Bulletin 6523748 (Event Streams)
Multiple vulnerabilities in Redis affecting the IBM Event Streams UI

Source: CCN
Type: IBM Security Bulletin 6524682 (Spectrum Protect Plus)
Vulnerabilities in Redis, OpenSSH, Golang Go, and Apache Kafka may affect IBM Spectrum Protect Plus Container Backup and Restore for Kubernetes and OpenShift

Source: CCN
Type: IBM Security Bulletin 6587098 (DataPower Gateway)
IBM DataPower Gateway: Update Redis to remediate two CVEs

Source: CCN
Type: IBM Security Bulletin 6597535 (Watson Knowledge Catalog on-prem)
Mutiple Vulnerabilities in Redis affecting Watson Knowledge Catalog for IBM Cloud Pak for Data

Source: CCN
Type: IBM Security Bulletin 6599643 (Cloud Pak for Multicloud Management Monitoring)
IBM Cloud Pak for Multicloud Management Monitoring is vulnerable to various attacks due to its use of redis (CVE-2021-32675, CVE-2021-32626, CVE-2021-32672)

Source: CCN
Type: IBM Security Bulletin 6825987 (Robotic Process Automation)
Multiple security vulnerabilities may affect IBM Robotic Process Automation for Cloud Pak

Source: CCN
Type: IBM Security Bulletin 7006571 (Robotic Process Automation for Cloud Pak)
Multiple vulnerabilities in Redis may affect IBM Robotic Process Automation for Cloud Pak

Source: MISC
Type: Patch, Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html

Vulnerable Configuration:Configuration 1:
  • cpe:/a:redis:redis:*:*:*:*:*:*:*:* (Version >= 6.2.0 and < 6.2.6)
  • OR cpe:/a:redis:redis:*:*:*:*:*:*:*:* (Version >= 6.0.0 and < 6.0.16)
  • OR cpe:/a:redis:redis:*:*:*:*:*:*:*:* (Version >= 5.0.0 and < 5.0.14)

    • Configuration 2:
  • cpe:/o:fedoraproject:fedora:33:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:34:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:35:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/o:debian:debian_linux:10.0:*:*:*:*:*:*:*
  • OR cpe:/o:debian:debian_linux:11.0:*:*:*:*:*:*:*

    • Configuration 4:
  • cpe:/a:netapp:management_services_for_element_software:-:*:*:*:*:*:*:*
  • OR cpe:/a:netapp:management_services_for_netapp_hci:-:*:*:*:*:*:*:*

    • Configuration 5:
  • cpe:/a:oracle:communications_operations_monitor:4.3:*:*:*:*:*:*:*
  • OR cpe:/a:oracle:communications_operations_monitor:4.4:*:*:*:*:*:*:*
  • OR cpe:/a:oracle:communications_operations_monitor:5.0:*:*:*:*:*:*:*

    • Configuration RedHat 1:
  • cpe:/a:redhat:enterprise_linux:8:*:*:*:*:*:*:*

    • Configuration RedHat 2:
  • cpe:/a:redhat:enterprise_linux:8::appstream:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:redislabs:redis:*:*:*:*:*:*:*:*
  • AND
  • cpe:/a:ibm:datapower_gateway:2018.4.1.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:spectrum_protect_plus:10.1.5:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:event_streams:2019.4.1:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:spectrum_protect_plus:10.1.6:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:event_streams:2019.4.2:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:event_streams:10.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:event_streams:2019.4.3:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:event_streams:10.1.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:datapower_gateway:10.0.1.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:spectrum_protect_plus:10.1.7:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:event_streams:10.2.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:spectrum_protect_plus:10.1.8:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:datapower_gateway:10.0.2.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:event_streams:10.3.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:event_streams:10.3.1:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:robotic_process_automation:21.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:datapower_gateway:10.0.3.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:robotic_process_automation:21.0.1:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:robotic_process_automation:21.0.2:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:robotic_process_automation:21.0.3:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:robotic_process_automation_for_cloud_pak:21.0.1:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:8004
    P
    		dom4j-1.6.1-150200.12.6.3 on GA media (Moderate)
    2023-06-20
    oval:org.opensuse.security:def:8069
    P
    		velocity-1.7-150200.3.7.3 on GA media (Moderate)
    2023-06-20
    oval:org.opensuse.security:def:3519
    P
    		gv-3.7.4-1.36 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:95149
    P
    		redis-6.2.6-150400.1.5 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:113332
    P
    		redis-6.2.6-1.1 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:69093
    P
    		Security update for redis (Important)
    2021-11-23
    oval:org.opensuse.security:def:102222
    P
    		Security update for redis (Important)
    2021-11-23
    oval:org.opensuse.security:def:109441
    P
    		Security update for redis (Important)
    2021-11-23
    oval:org.opensuse.security:def:118537
    P
    		Security update for redis (Important)
    2021-11-23
    oval:org.opensuse.security:def:69158
    P
    		Security update for redis (Important)
    2021-11-23
    oval:org.opensuse.security:def:1646
    P
    		Security update for redis (Important)
    2021-11-23
    oval:org.opensuse.security:def:96085
    P
    		Security update for redis (Important)
    2021-11-23
    oval:org.opensuse.security:def:111795
    P
    		Security update for redis (Important)
    2021-11-23
    oval:org.opensuse.security:def:102775
    P
    		Security update for redis (Important)
    2021-11-23
    oval:com.redhat.rhsa:def:20213945
    P
    		RHSA-2021:3945: redis:6 security update (Important)
    2021-10-20
    oval:com.redhat.rhsa:def:20213918
    P
    		RHSA-2021:3918: redis:5 security update (Important)
    2021-10-19
    BACK
    redis redis *
    redis redis *
    redis redis *
    fedoraproject fedora 33
    fedoraproject fedora 34
    fedoraproject fedora 35
    debian debian linux 10.0
    debian debian linux 11.0
    netapp management services for element software -
    netapp management services for netapp hci -
    oracle communications operations monitor 4.3
    oracle communications operations monitor 4.4
    oracle communications operations monitor 5.0
    redislabs redis *
    ibm datapower gateway 2018.4.1.0
    ibm spectrum protect plus 10.1.5
    ibm event streams 2019.4.1
    ibm spectrum protect plus 10.1.6
    ibm event streams 2019.4.2
    ibm event streams 10.0.0
    ibm event streams 2019.4.3
    ibm event streams 10.1.0
    ibm datapower gateway 10.0.1.0
    ibm spectrum protect plus 10.1.7
    ibm event streams 10.2.0
    ibm spectrum protect plus 10.1.8
    ibm datapower gateway 10.0.2.0
    ibm event streams 10.3.0
    ibm event streams 10.3.1
    ibm robotic process automation 21.0.0
    ibm datapower gateway 10.0.3.0
    ibm robotic process automation 21.0.1
    ibm robotic process automation 21.0.2
    ibm robotic process automation 21.0.3
    ibm robotic process automation for cloud pak 21.0.1