UBUNTU-CVE-2021-32625 (CVE-2021-32625)

Vulnerability from osv_ubuntu – Published: 2021-06-02 20:15 – Updated: 2026-04-14 08:14 – Source website
VLAI
Details

Redis is an open source (BSD licensed), in-memory data structure store, used as a database, cache, and message broker. An integer overflow bug in Redis version 6.0 or newer, could be exploited using the STRALGO LCS command to corrupt the heap and potentially result with remote code execution. This is a result of an incomplete fix by CVE-2021-29477. The problem is fixed in version 6.2.4 and 6.0.14. An additional workaround to mitigate the problem without patching the redis-server executable is to use ACL configuration to prevent clients from using the STRALGO LCS command. On 64 bit systems which have the fixes of CVE-2021-29477 (6.2.3 or 6.0.13), it is sufficient to make sure that the proto-max-bulk-len config parameter is smaller than 2GB (default is 512MB).

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "redis-server",
            "binary_version": "2:2.8.4-2ubuntu0.2+esm5"
          },
          {
            "binary_name": "redis-tools",
            "binary_version": "2:2.8.4-2ubuntu0.2+esm5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "redis",
        "purl": "pkg:deb/ubuntu/redis@2:2.8.4-2ubuntu0.2+esm5?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:2.6.13-1",
        "2:2.6.16-3",
        "2:2.8.0-1",
        "2:2.8.2-1",
        "2:2.8.4-2",
        "2:2.8.4-2ubuntu0.2",
        "2:2.8.4-2ubuntu0.2+esm1",
        "2:2.8.4-2ubuntu0.2+esm2",
        "2:2.8.4-2ubuntu0.2+esm3",
        "2:2.8.4-2ubuntu0.2+esm4",
        "2:2.8.4-2ubuntu0.2+esm5"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "redis-sentinel",
            "binary_version": "2:3.0.6-1ubuntu0.4+esm5"
          },
          {
            "binary_name": "redis-server",
            "binary_version": "2:3.0.6-1ubuntu0.4+esm5"
          },
          {
            "binary_name": "redis-tools",
            "binary_version": "2:3.0.6-1ubuntu0.4+esm5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "redis",
        "purl": "pkg:deb/ubuntu/redis@2:3.0.6-1ubuntu0.4+esm5?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:3.0.3-3",
        "2:3.0.5-1",
        "2:3.0.5-2",
        "2:3.0.5-3",
        "2:3.0.5-4",
        "2:3.0.6-1",
        "2:3.0.6-1ubuntu0.2",
        "2:3.0.6-1ubuntu0.3",
        "2:3.0.6-1ubuntu0.4",
        "2:3.0.6-1ubuntu0.4+esm1",
        "2:3.0.6-1ubuntu0.4+esm2",
        "2:3.0.6-1ubuntu0.4+esm3",
        "2:3.0.6-1ubuntu0.4+esm4",
        "2:3.0.6-1ubuntu0.4+esm5"
      ]
    }
  ],
  "aliases": [],
  "details": "Redis is an open source (BSD licensed), in-memory data structure store, used as a database, cache, and message broker. An integer overflow bug in Redis version 6.0 or newer, could be exploited using the STRALGO LCS command to corrupt the heap and potentially result with remote code execution. This is a result of an incomplete fix by CVE-2021-29477. The problem is fixed in version 6.2.4 and 6.0.14. An additional workaround to mitigate the problem without patching the redis-server executable is to use ACL configuration to prevent clients from using the STRALGO LCS command. On 64 bit systems which have the fixes of CVE-2021-29477 (6.2.3 or 6.0.13), it is sufficient to make sure that the proto-max-bulk-len config parameter is smaller than 2GB (default is 512MB).",
  "id": "UBUNTU-CVE-2021-32625",
  "modified": "2026-04-14T08:14:15Z",
  "published": "2021-06-02T20:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-32625"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/redis/redis/pull/9011"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/redis/redis/commit/1ddecf1958924b178b76a31d989ef1e05af81964"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-32625"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-32625"
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.