Vulnerability-Lookup

GSD-2021-32761

Vulnerability from gsd - Updated: 2023-12-13 01:23

Details

Redis is an in-memory database that persists on disk. A vulnerability involving out-of-bounds read and integer overflow to buffer overflow exists starting with version 2.2 and prior to versions 5.0.13, 6.0.15, and 6.2.5. On 32-bit systems, Redis `*BIT*` command are vulnerable to integer overflow that can potentially be exploited to corrupt the heap, leak arbitrary heap contents or trigger remote code execution. The vulnerability involves changing the default `proto-max-bulk-len` configuration parameter to a very large value and constructing specially crafted commands bit commands. This problem only affects Redis on 32-bit platforms, or compiled as a 32-bit binary. Redis versions 5.0.`3m 6.0.15, and 6.2.5 contain patches for this issue. 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.

Aliases

CVE-2021-32761

Aliases

CVE-2021-32761

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2021-32761",
    "description": "Redis is an in-memory database that persists on disk. A vulnerability involving out-of-bounds read and integer overflow to buffer overflow exists starting with version 2.2 and prior to versions 5.0.13, 6.0.15, and 6.2.5. On 32-bit systems, Redis `*BIT*` command are vulnerable to integer overflow that can potentially be exploited to corrupt the heap, leak arbitrary heap contents or trigger remote code execution. The vulnerability involves changing the default `proto-max-bulk-len` configuration parameter to a very large value and constructing specially crafted commands bit commands. This problem only affects Redis on 32-bit platforms, or compiled as a 32-bit binary. Redis versions 5.0.`3m 6.0.15, and 6.2.5 contain patches for this issue. 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.",
    "id": "GSD-2021-32761",
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      "https://advisories.mageia.org/CVE-2021-32761.html",
      "https://security.archlinux.org/CVE-2021-32761",
      "https://ubuntu.com/security/CVE-2021-32761"
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}

CVE-2021-32761 (GCVE-0-2021-32761)

Vulnerability from cvelistv5 – Published: 2021-07-21 20:50 – Updated: 2024-08-03 23:33

Title

Integer overflow issues with *BIT commands on 32-bit systems

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-125 - Out-of-bounds Read
CWE-680 - Integer Overflow to Buffer Overflow

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7698 records in the last 180 days details

References

8 references

URL	Tags
https://github.com/redis/redis/security/advisorie…	x_refsource_CONFIRM
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://security.netapp.com/advisory/ntap-2021082…	x_refsource_CONFIRM
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST
https://www.debian.org/security/2021/dsa-5001	vendor-advisoryx_refsource_DEBIAN
https://security.gentoo.org/glsa/202209-17	vendor-advisoryx_refsource_GENTOO

Impacted products

1 product

Vendor	Product	Version
redis	redis	Affected: >= 2.2, < 5.0.13 Affected: >= 6.0.0, < 6.0.15 Affected: >= 6.2.0, < 6.2.5

Show details on NVD website

JSON

To clipboard

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          "name": "[debian-lts-announce] 20210722 [SECURITY] [DLA 2717-1] redis security update",
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          "url": "https://lists.debian.org/debian-lts-announce/2021/07/msg00017.html"
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          "name": "FEDORA-2021-76cf1653b3",
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          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6O7AUOROBYGP5IMGJPC5HZ3R2RB6GZ5X/"
        },
        {
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          "url": "https://security.netapp.com/advisory/ntap-20210827-0004/"
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        },
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          "name": "DSA-5001",
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          "url": "https://www.debian.org/security/2021/dsa-5001"
        },
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          "name": "GLSA-202209-17",
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            "x_refsource_GENTOO"
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      ],
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        "advisory": "GHSA-8wxq-j7rp-g8wj",
        "discovery": "UNKNOWN"
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          "ID": "CVE-2021-32761",
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            "baseScore": 7.5,
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    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2021-32761",
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    "dateReserved": "2021-05-12T00:00:00.000Z",
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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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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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.

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