Vulnerability-Lookup

OESA-2021-1432 (CVE-2021-32626)

Vulnerability from osv_openeuler – Published: 2021-11-12 11:04 – Updated: 2026-08-06 11:04 – Source website

Summary

redis6 security update

Details

Redis is an advanced key-value store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets and sorted sets. Security Fix(es):

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.(CVE-2021-32626)

Severity

8.8 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-32626	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "redis6-6.0.11-4.oe1.aarch64.rpm",
          "redis6-debuginfo-6.0.11-4.oe1.aarch64.rpm",
          "redis6-debugsource-6.0.11-4.oe1.aarch64.rpm",
          "redis6-devel-6.0.11-4.oe1.aarch64.rpm"
        ],
        "noarch": [
          "redis6-doc-6.0.11-4.oe1.noarch.rpm"
        ],
        "src": [
          "redis6-6.0.11-4.oe1.src.rpm"
        ],
        "x86_64": [
          "redis6-6.0.11-4.oe1.x86_64.rpm",
          "redis6-debuginfo-6.0.11-4.oe1.x86_64.rpm",
          "redis6-debugsource-6.0.11-4.oe1.x86_64.rpm",
          "redis6-devel-6.0.11-4.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "redis6",
        "purl": "pkg:rpm/openEuler/redis6\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.0.11-4.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "redis6-6.0.11-4.oe1.aarch64.rpm",
          "redis6-debuginfo-6.0.11-4.oe1.aarch64.rpm",
          "redis6-debugsource-6.0.11-4.oe1.aarch64.rpm",
          "redis6-devel-6.0.11-4.oe1.aarch64.rpm"
        ],
        "noarch": [
          "redis6-doc-6.0.11-4.oe1.noarch.rpm"
        ],
        "src": [
          "redis6-6.0.11-4.oe1.src.rpm "
        ],
        "x86_64": [
          "redis6-6.0.11-4.oe1.x86_64.rpm",
          "redis6-debuginfo-6.0.11-4.oe1.x86_64.rpm",
          "redis6-debugsource-6.0.11-4.oe1.x86_64.rpm",
          "redis6-devel-6.0.11-4.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP2",
        "name": "redis6",
        "purl": "pkg:rpm/openEuler/redis6\u0026distro=openEuler-20.03-LTS-SP2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.0.11-4.oe1 "
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "Redis is an advanced key-value store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets and sorted sets.\r\nSecurity Fix(es):\r\n\r\nRedis 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.(CVE-2021-32626)",
  "id": "OESA-2021-1432",
  "modified": "2026-08-06T11:04:42Z",
  "published": "2021-11-12T11:04:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1432"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-32626"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "redis6 security update",
  "upstream": [
    "CVE-2021-32626"
  ]
}

CVE-2021-32626 (GCVE-0-2021-32626)

Vulnerability from cvelistv5 – Published: 2021-10-04 17:30 – Updated: 2024-08-03 23:25

Title

Lua scripts can overflow the heap-based Lua stack in Redis

Summary

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-122 - Heap-based Buffer Overflow
CWE-787 - Out-of-bounds Write

Assigner

GitHub_M mitre root

References

10 references

URL	Tags
https://github.com/redis/redis/security/advisorie…	x_refsource_CONFIRM
https://github.com/redis/redis/commit/666ed7facf4…	x_refsource_MISC
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.apache.org/thread.html/r75490c61c2c…	mailing-listx_refsource_MLIST
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://www.debian.org/security/2021/dsa-5001	vendor-advisoryx_refsource_DEBIAN
https://www.oracle.com/security-alerts/cpuapr2022.html	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2021110…	x_refsource_CONFIRM
https://security.gentoo.org/glsa/202209-17	vendor-advisoryx_refsource_GENTOO

Impacted products

1 product

Vendor	Product	Version
redis	redis	Affected: >= 6.2.0, < 6.2.6 Affected: >= 6.0.0, < 6.0.16 Affected: >= 2.6.0, < 5.0.14

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T23:25:30.986Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/redis/redis/security/advisories/GHSA-p486-xggp-782c"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/redis/redis/commit/666ed7facf4524bf6d19b11b20faa2cf93fdf591"
          },
          {
            "name": "FEDORA-2021-8913c7900c",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VL5KXFN3ATM7IIM7Q4O4PWTSRGZ5744Z/"
          },
          {
            "name": "FEDORA-2021-61c487f241",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HTYQ5ZF37HNGTZWVNJD3VXP7I6MEEF42/"
          },
          {
            "name": "[druid-commits] 20211025 [GitHub] [druid] jihoonson opened a new pull request #11844: Bump netty4 to 4.1.68; suppress CVE-2021-37136 and CVE-2021-37137 for netty3",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.apache.org/thread.html/r75490c61c2cb7b6ae2c81238fd52ae13636c60435abcd732d41531a0%40%3Ccommits.druid.apache.org%3E"
          },
          {
            "name": "FEDORA-2021-aa94492a09",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WR5WKJWXD4D6S3DJCZ56V74ESLTDQRAB/"
          },
          {
            "name": "DSA-5001",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2021/dsa-5001"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20211104-0003/"
          },
          {
            "name": "GLSA-202209-17",
            "tags": [
              "vendor-advisory",
              "x_refsource_GENTOO",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202209-17"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "redis",
          "vendor": "redis",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 6.2.0, \u003c 6.2.6"
            },
            {
              "status": "affected",
              "version": "\u003e= 6.0.0, \u003c 6.0.16"
            },
            {
              "status": "affected",
              "version": "\u003e= 2.6.0, \u003c 5.0.14"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-122",
              "description": "CWE-122: Heap-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787: Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-09-29T16:07:36.000Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/redis/redis/security/advisories/GHSA-p486-xggp-782c"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/redis/redis/commit/666ed7facf4524bf6d19b11b20faa2cf93fdf591"
        },
        {
          "name": "FEDORA-2021-8913c7900c",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VL5KXFN3ATM7IIM7Q4O4PWTSRGZ5744Z/"
        },
        {
          "name": "FEDORA-2021-61c487f241",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HTYQ5ZF37HNGTZWVNJD3VXP7I6MEEF42/"
        },
        {
          "name": "[druid-commits] 20211025 [GitHub] [druid] jihoonson opened a new pull request #11844: Bump netty4 to 4.1.68; suppress CVE-2021-37136 and CVE-2021-37137 for netty3",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.apache.org/thread.html/r75490c61c2cb7b6ae2c81238fd52ae13636c60435abcd732d41531a0%40%3Ccommits.druid.apache.org%3E"
        },
        {
          "name": "FEDORA-2021-aa94492a09",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WR5WKJWXD4D6S3DJCZ56V74ESLTDQRAB/"
        },
        {
          "name": "DSA-5001",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "https://www.debian.org/security/2021/dsa-5001"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20211104-0003/"
        },
        {
          "name": "GLSA-202209-17",
          "tags": [
            "vendor-advisory",
            "x_refsource_GENTOO"
          ],
          "url": "https://security.gentoo.org/glsa/202209-17"
        }
      ],
      "source": {
        "advisory": "GHSA-p486-xggp-782c",
        "discovery": "UNKNOWN"
      },
      "title": "Lua scripts can overflow the heap-based Lua stack in Redis",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2021-32626",
          "STATE": "PUBLIC",
          "TITLE": "Lua scripts can overflow the heap-based Lua stack in Redis"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "redis",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "\u003e= 6.2.0, \u003c 6.2.6"
                          },
                          {
                            "version_value": "\u003e= 6.0.0, \u003c 6.0.16"
                          },
                          {
                            "version_value": "\u003e= 2.6.0, \u003c 5.0.14"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "redis"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "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."
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-122: Heap-based Buffer Overflow"
                }
              ]
            },
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-787: Out-of-bounds Write"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/redis/redis/security/advisories/GHSA-p486-xggp-782c",
              "refsource": "CONFIRM",
              "url": "https://github.com/redis/redis/security/advisories/GHSA-p486-xggp-782c"
            },
            {
              "name": "https://github.com/redis/redis/commit/666ed7facf4524bf6d19b11b20faa2cf93fdf591",
              "refsource": "MISC",
              "url": "https://github.com/redis/redis/commit/666ed7facf4524bf6d19b11b20faa2cf93fdf591"
            },
            {
              "name": "FEDORA-2021-8913c7900c",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VL5KXFN3ATM7IIM7Q4O4PWTSRGZ5744Z/"
            },
            {
              "name": "FEDORA-2021-61c487f241",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HTYQ5ZF37HNGTZWVNJD3VXP7I6MEEF42/"
            },
            {
              "name": "[druid-commits] 20211025 [GitHub] [druid] jihoonson opened a new pull request #11844: Bump netty4 to 4.1.68; suppress CVE-2021-37136 and CVE-2021-37137 for netty3",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/r75490c61c2cb7b6ae2c81238fd52ae13636c60435abcd732d41531a0@%3Ccommits.druid.apache.org%3E"
            },
            {
              "name": "FEDORA-2021-aa94492a09",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WR5WKJWXD4D6S3DJCZ56V74ESLTDQRAB/"
            },
            {
              "name": "DSA-5001",
              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2021/dsa-5001"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpuapr2022.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20211104-0003/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20211104-0003/"
            },
            {
              "name": "GLSA-202209-17",
              "refsource": "GENTOO",
              "url": "https://security.gentoo.org/glsa/202209-17"
            }
          ]
        },
        "source": {
          "advisory": "GHSA-p486-xggp-782c",
          "discovery": "UNKNOWN"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2021-32626",
    "datePublished": "2021-10-04T17:30:11.000Z",
    "dateReserved": "2021-05-12T00:00:00.000Z",
    "dateUpdated": "2024-08-03T23:25:30.986Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.