CVE-2021-32627

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Source
https://nvd.nist.gov/vuln/detail/CVE-2021-32627
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-32627.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-32627
Aliases
Downstream
Related
Published
2021-10-04T18:15:08Z
Modified
2025-10-15T13:02:03.883992Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Git / github.com/redis/redis

Affected ranges

Type
GIT
Repo
https://github.com/redis/redis
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
f6a40570fa63d5afdd596c78083d754081d80ae3

Affected versions

1.*

1.3.6

2.*

2.2-alpha0
2.2-alpha1
2.2-alpha2
2.2-alpha3
2.2-alpha4
2.2-alpha5
2.2-alpha6
2.2.0-rc1
2.3-alpha0

3.*

3.0-alpha0

6.*

6.0-rc1
6.0-rc2
6.0-rc3
6.0-rc4
6.0.0
6.0.1
6.0.10
6.0.11
6.0.12
6.0.13
6.0.14
6.0.15
6.0.2
6.0.3
6.0.4
6.0.5
6.0.6
6.0.7
6.0.8
6.0.9

v1.*

v1.3.10
v1.3.11
v1.3.12
v1.3.7
v1.3.8
v1.3.9

v2.*

v2.0.0-rc1
v2.1.1-watch

Other

vm-playpen
with-deprecated-diskstore

Database specific

vanir_signatures

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        "target": {
            "file": "src/t_stream.c"
        },
        "id": "CVE-2021-32627-01719506",
        "digest": {
            "threshold": 0.9,
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        "target": {
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        },
        "id": "CVE-2021-32627-05110169",
        "digest": {
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        },
        "id": "CVE-2021-32627-0de9d950",
        "digest": {
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        "target": {
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        "id": "CVE-2021-32627-167e5942",
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        "target": {
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        },
        "id": "CVE-2021-32627-168e1c04",
        "digest": {
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        "target": {
            "function": "streamAppendItem",
            "file": "src/t_stream.c"
        },
        "id": "CVE-2021-32627-1a17035c",
        "digest": {
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        "signature_version": "v1",
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        "target": {
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        },
        "id": "CVE-2021-32627-1ee7c7b4",
        "digest": {
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        "target": {
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            "file": "src/listpack.c"
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        "id": "CVE-2021-32627-249b8ec2",
        "digest": {
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        "target": {
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        "target": {
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        "id": "CVE-2021-32627-3b7a95af",
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    {
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        "target": {
            "function": "zunionInterGenericCommand",
            "file": "src/t_zset.c"
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        "id": "CVE-2021-32627-3f26c394",
        "digest": {
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    {
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        "target": {
            "function": "lposCommand",
            "file": "src/t_list.c"
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        "id": "CVE-2021-32627-454a0e78",
        "digest": {
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        "target": {
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        "target": {
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        "target": {
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        "target": {
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        "target": {
            "function": "hashTypeTryConversion",
            "file": "src/t_hash.c"
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        "id": "CVE-2021-32627-8f92c28e",
        "digest": {
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    {
        "source": "https://github.com/redis/redis/commit/f6a40570fa63d5afdd596c78083d754081d80ae3",
        "target": {
            "function": "_quicklistInsert",
            "file": "src/quicklist.c"
        },
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        "digest": {
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    {
        "source": "https://github.com/redis/redis/commit/f6a40570fa63d5afdd596c78083d754081d80ae3",
        "target": {
            "function": "lsetCommand",
            "file": "src/t_list.c"
        },
        "id": "CVE-2021-32627-912a0bfb",
        "digest": {
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        },
        "signature_version": "v1",
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    },
    {
        "source": "https://github.com/redis/redis/commit/f6a40570fa63d5afdd596c78083d754081d80ae3",
        "target": {
            "function": "pushGenericCommand",
            "file": "src/t_list.c"
        },
        "id": "CVE-2021-32627-b115261f",
        "digest": {
            "function_hash": "162047016710286561014166243975017541613",
            "length": 809.0
        },
        "signature_version": "v1",
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        "deprecated": false
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    {
        "source": "https://github.com/redis/redis/commit/f6a40570fa63d5afdd596c78083d754081d80ae3",
        "target": {
            "function": "xaddCommand",
            "file": "src/t_stream.c"
        },
        "id": "CVE-2021-32627-b6cb1b5e",
        "digest": {
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            "length": 2350.0
        },
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    },
    {
        "source": "https://github.com/redis/redis/commit/f6a40570fa63d5afdd596c78083d754081d80ae3",
        "target": {
            "file": "src/t_zset.c"
        },
        "id": "CVE-2021-32627-b706f104",
        "digest": {
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