RHSA-2021:3918

Vulnerability from csaf_opensuse - Published: 2021-10-19 00:00 - Updated: 2026-09-20 11:16
Summary
security update for redis
Severity
Important
Notes
Title of the patch: security update for redis
Description of the patch: This security update provides a functional equivalent of RHSA-2021:3918. The original Red Hat(R) advisory is available from the Red Hat web site at https://access.redhat.com/errata/RHSA-2021:3918.
Patchnames: RHSA-2021:3918
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
CVE-2021-32626
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Liberty Linux 8:redis-0:5.0.3-5.module+el8.4.0+12927+b9845322.x86_64::redis:5 —
Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:redis-devel-0:5.0.3-5.module+el8.4.0+12927+b9845322.x86_64::redis:5 —
Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:redis-doc-0:5.0.3-5.module+el8.4.0+12927+b9845322.noarch::redis:5 —
Vendor Fix
Threats
Impact important
CVE-2021-32627
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Recommended 3 products, the same list as for CVE-2021-32626
Threats
Impact important
CVE-2021-32628
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Recommended 3 products, the same list as for CVE-2021-32626
Threats
Impact important
CVE-2021-32675
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Recommended 3 products, the same list as for CVE-2021-32626
Threats
Impact important
CVE-2021-32687
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Recommended 3 products, the same list as for CVE-2021-32626
Threats
Impact important
CVE-2021-41099
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Recommended 3 products, the same list as for CVE-2021-32626
Threats
Impact important
References
To clipboard 

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          "text": "Redis is an open source, in-memory database that persists on disk. In affected versions specially crafted Lua scripts executing in Redis can cause the heap-based Lua stack to be overflowed, due to incomplete checks for this condition. This can result with heap corruption and potentially remote code execution. This problem exists in all versions of Redis with Lua scripting support, starting from 2.6. The problem is fixed in versions 6.2.6, 6.0.16 and 5.0.14. For users unable to update an additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from executing Lua scripts. This can be done using ACL to restrict EVAL and EVALSHA commands.",
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          "text": "Redis is an open source, in-memory database that persists on disk. In affected versions an integer overflow bug in Redis can be exploited to corrupt the heap and potentially result with remote code execution. The vulnerability involves changing the default proto-max-bulk-len and client-query-buffer-limit configuration parameters to very large values and constructing specially crafted very large stream elements. The problem is fixed in Redis 6.2.6, 6.0.16 and 5.0.14. For users unable to upgrade an additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from modifying the proto-max-bulk-len configuration parameter. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command.",
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          "text": "Redis is an open source, in-memory database that persists on disk. An integer overflow bug in the ziplist data structure used by all versions of Redis can be exploited to corrupt the heap and potentially result with remote code execution. The vulnerability involves modifying the default ziplist configuration parameters (hash-max-ziplist-entries, hash-max-ziplist-value, zset-max-ziplist-entries or zset-max-ziplist-value) to a very large value, and then constructing specially crafted commands to create very large ziplists. The problem is fixed in Redis versions 6.2.6, 6.0.16, 5.0.14. An additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from modifying the above configuration parameters. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command.",
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          "text": "https://www.suse.com/security/cve/CVE-2021-32675"
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          "category": "general",
          "text": "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.",
          "title": "CVE description"
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          "SUSE Liberty Linux 8:redis-0:5.0.3-5.module+el8.4.0+12927+b9845322.x86_64::redis:5",
          "SUSE Liberty Linux 8:redis-devel-0:5.0.3-5.module+el8.4.0+12927+b9845322.x86_64::redis:5",
          "SUSE Liberty Linux 8:redis-doc-0:5.0.3-5.module+el8.4.0+12927+b9845322.noarch::redis:5"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2021-32675",
          "url": "https://www.suse.com/security/cve/CVE-2021-32675"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1191303 for CVE-2021-32675",
          "url": "https://bugzilla.suse.com/1191303"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Liberty Linux 8:redis-0:5.0.3-5.module+el8.4.0+12927+b9845322.x86_64::redis:5",
            "SUSE Liberty Linux 8:redis-devel-0:5.0.3-5.module+el8.4.0+12927+b9845322.x86_64::redis:5",
            "SUSE Liberty Linux 8:redis-doc-0:5.0.3-5.module+el8.4.0+12927+b9845322.noarch::redis:5"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Liberty Linux 8:redis-0:5.0.3-5.module+el8.4.0+12927+b9845322.x86_64::redis:5",
            "SUSE Liberty Linux 8:redis-devel-0:5.0.3-5.module+el8.4.0+12927+b9845322.x86_64::redis:5",
            "SUSE Liberty Linux 8:redis-doc-0:5.0.3-5.module+el8.4.0+12927+b9845322.noarch::redis:5"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2021-10-19T00:00:00Z",
          "details": "important"
        }
      ],
      "title": "CVE-2021-32675"
    },
    {
      "cve": "CVE-2021-32687",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2021-32687"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "Redis is an open source, in-memory database that persists on disk. An integer overflow bug affecting all versions of Redis can be exploited to corrupt the heap and potentially be used to leak arbitrary contents of the heap or trigger remote code execution. The vulnerability involves changing the default set-max-intset-entries configuration parameter to a very large value and constructing specially crafted commands to manipulate sets. The problem is fixed in Redis versions 6.2.6, 6.0.16 and 5.0.14. An additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from modifying the set-max-intset-entries configuration parameter. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Liberty Linux 8:redis-0:5.0.3-5.module+el8.4.0+12927+b9845322.x86_64::redis:5",
          "SUSE Liberty Linux 8:redis-devel-0:5.0.3-5.module+el8.4.0+12927+b9845322.x86_64::redis:5",
          "SUSE Liberty Linux 8:redis-doc-0:5.0.3-5.module+el8.4.0+12927+b9845322.noarch::redis:5"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2021-32687",
          "url": "https://www.suse.com/security/cve/CVE-2021-32687"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1191302 for CVE-2021-32687",
          "url": "https://bugzilla.suse.com/1191302"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Liberty Linux 8:redis-0:5.0.3-5.module+el8.4.0+12927+b9845322.x86_64::redis:5",
            "SUSE Liberty Linux 8:redis-devel-0:5.0.3-5.module+el8.4.0+12927+b9845322.x86_64::redis:5",
            "SUSE Liberty Linux 8:redis-doc-0:5.0.3-5.module+el8.4.0+12927+b9845322.noarch::redis:5"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Liberty Linux 8:redis-0:5.0.3-5.module+el8.4.0+12927+b9845322.x86_64::redis:5",
            "SUSE Liberty Linux 8:redis-devel-0:5.0.3-5.module+el8.4.0+12927+b9845322.x86_64::redis:5",
            "SUSE Liberty Linux 8:redis-doc-0:5.0.3-5.module+el8.4.0+12927+b9845322.noarch::redis:5"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2021-10-19T00:00:00Z",
          "details": "important"
        }
      ],
      "title": "CVE-2021-32687"
    },
    {
      "cve": "CVE-2021-41099",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2021-41099"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "Redis is an open source, in-memory database that persists on disk. An integer overflow bug in the underlying string library can be used to corrupt the heap and potentially result with denial of service or remote code execution. The vulnerability involves changing the default proto-max-bulk-len configuration parameter to a very large value and constructing specially crafted network payloads or commands. The problem is fixed in Redis versions 6.2.6, 6.0.16 and 5.0.14. An additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from modifying the proto-max-bulk-len configuration parameter. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Liberty Linux 8:redis-0:5.0.3-5.module+el8.4.0+12927+b9845322.x86_64::redis:5",
          "SUSE Liberty Linux 8:redis-devel-0:5.0.3-5.module+el8.4.0+12927+b9845322.x86_64::redis:5",
          "SUSE Liberty Linux 8:redis-doc-0:5.0.3-5.module+el8.4.0+12927+b9845322.noarch::redis:5"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2021-41099",
          "url": "https://www.suse.com/security/cve/CVE-2021-41099"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1191299 for CVE-2021-41099",
          "url": "https://bugzilla.suse.com/1191299"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Liberty Linux 8:redis-0:5.0.3-5.module+el8.4.0+12927+b9845322.x86_64::redis:5",
            "SUSE Liberty Linux 8:redis-devel-0:5.0.3-5.module+el8.4.0+12927+b9845322.x86_64::redis:5",
            "SUSE Liberty Linux 8:redis-doc-0:5.0.3-5.module+el8.4.0+12927+b9845322.noarch::redis:5"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Liberty Linux 8:redis-0:5.0.3-5.module+el8.4.0+12927+b9845322.x86_64::redis:5",
            "SUSE Liberty Linux 8:redis-devel-0:5.0.3-5.module+el8.4.0+12927+b9845322.x86_64::redis:5",
            "SUSE Liberty Linux 8:redis-doc-0:5.0.3-5.module+el8.4.0+12927+b9845322.noarch::redis:5"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2021-10-19T00:00:00Z",
          "details": "important"
        }
      ],
      "title": "CVE-2021-41099"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.