{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "state": "PUBLISHED",
        "cveId": "CVE-2021-32765",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "dateUpdated": "2024-08-03T23:33:55.893Z",
        "dateReserved": "2021-05-12T00:00:00.000Z",
        "datePublished": "2021-10-04T00:00:00.000Z"
    },
    "containers": {
        "cna": {
            "title": "Integer Overflow to Buffer Overflow in Hiredis",
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2022-10-31T00:00:00.000Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Hiredis is a minimalistic C client library for the Redis database. In affected versions Hiredis is vulnurable to integer overflow if provided maliciously crafted or corrupted `RESP` `mult-bulk` protocol data. When parsing `multi-bulk` (array-like) replies, hiredis fails to check if `count * sizeof(redisReply*)` can be represented in `SIZE_MAX`. If it can not, and the `calloc()` call doesn't itself make this check, it would result in a short allocation and subsequent buffer overflow. Users of hiredis who are unable to update may set the [maxelements](https://github.com/redis/hiredis#reader-max-array-elements) context option to a value small enough that no overflow is possible."
                }
            ],
            "affected": [
                {
                    "vendor": "redis",
                    "product": "hiredis",
                    "versions": [
                        {
                            "version": "< 1.0.1",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://github.com/redis/hiredis/security/advisories/GHSA-hfm9-39pp-55p2"
                },
                {
                    "url": "https://github.com/redis/hiredis/commit/76a7b10005c70babee357a7d0f2becf28ec7ed1e"
                },
                {
                    "url": "https://wiki.sei.cmu.edu/confluence/display/c/MEM07-C.+Ensure+that+the+arguments+to+calloc%28%29%2C+when+multiplied%2C+do+not+wrap"
                },
                {
                    "name": "[debian-lts-announce] 20211012 [SECURITY] [DLA 2783-1] hiredis security update",
                    "tags": [
                        "mailing-list"
                    ],
                    "url": "https://lists.debian.org/debian-lts-announce/2021/10/msg00007.html"
                },
                {
                    "url": "https://security.netapp.com/advisory/ntap-20211104-0003/"
                },
                {
                    "name": "GLSA-202210-32",
                    "tags": [
                        "vendor-advisory"
                    ],
                    "url": "https://security.gentoo.org/glsa/202210-32"
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "availabilityImpact": "HIGH",
                        "baseScore": 8.8,
                        "baseSeverity": "HIGH"
                    }
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "type": "CWE",
                            "lang": "en",
                            "description": "CWE-190: Integer Overflow or Wraparound",
                            "cweId": "CWE-190"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "type": "CWE",
                            "lang": "en",
                            "description": "CWE-680: Integer Overflow to Buffer Overflow",
                            "cweId": "CWE-680"
                        }
                    ]
                }
            ],
            "source": {
                "advisory": "GHSA-hfm9-39pp-55p2",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-03T23:33:55.893Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://github.com/redis/hiredis/security/advisories/GHSA-hfm9-39pp-55p2",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://github.com/redis/hiredis/commit/76a7b10005c70babee357a7d0f2becf28ec7ed1e",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://wiki.sei.cmu.edu/confluence/display/c/MEM07-C.+Ensure+that+the+arguments+to+calloc%28%29%2C+when+multiplied%2C+do+not+wrap",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "name": "[debian-lts-announce] 20211012 [SECURITY] [DLA 2783-1] hiredis security update",
                        "tags": [
                            "mailing-list",
                            "x_transferred"
                        ],
                        "url": "https://lists.debian.org/debian-lts-announce/2021/10/msg00007.html"
                    },
                    {
                        "url": "https://security.netapp.com/advisory/ntap-20211104-0003/",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "name": "GLSA-202210-32",
                        "tags": [
                            "vendor-advisory",
                            "x_transferred"
                        ],
                        "url": "https://security.gentoo.org/glsa/202210-32"
                    }
                ]
            }
        ]
    }
}