Vulnerability-Lookup

BREW-EXIFTOOL-CVE-2020-36846 (CVE-2020-8927)

Vulnerability from osv_homebrew – Published: 2026-08-13 09:21 – Updated: 2026-09-09 23:54 – Source website

Details

A buffer overflow exists in the Brotli library versions prior to 1.0.8 where an attacker controlling the input length of a "one-shot" decompression request to a script can trigger a crash, which happens when copying over chunks of data larger than 2 GiB. It is recommended to update your Brotli library to 1.0.8 or later. If one cannot update, we recommend to use the "streaming" API as opposed to the "one-shot" API, and impose chunk size limits.

Severity

6.5 (Medium)


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

References

URL

Type

	https://lists.fedoraproject.org/archives/list/pac…	WEB
	https://lists.fedoraproject.org/archives/list/pac…	WEB
	https://lists.fedoraproject.org/archives/list/pac…	WEB
	https://lists.fedoraproject.org/archives/list/pac…	WEB
	https://lists.fedoraproject.org/archives/list/pac…	WEB
	https://lists.fedoraproject.org/archives/list/pac…	WEB
	https://lists.fedoraproject.org/archives/list/pac…	WEB
	https://lists.fedoraproject.org/archives/list/pac…	WEB
	https://lists.fedoraproject.org/archives/list/pac…	WEB
	http://lists.opensuse.org/opensuse-security-annou…	ADVISORY
	https://github.com/google/brotli/releases/tag/v1.0.9	ADVISORY
	https://lists.debian.org/debian-lts-announce/2020…	ADVISORY
	https://usn.ubuntu.com/4568-1/	ADVISORY
	https://www.debian.org/security/2020/dsa-4801	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "fix": null,
        "range_state": "affected",
        "resource": "IO::Compress::Brotli",
        "resource_purl": "pkg:cpan/TIMLEGGE/IO-Compress-Brotli@0.019"
      },
      "package": {
        "ecosystem": "Homebrew",
        "name": "exiftool",
        "purl": "pkg:brew/exiftool"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "confidence": "medium",
    "source": "matched",
    "strategy": "cpansa",
    "upstream_evidence": [
      {
        "ecosystem": "CPAN",
        "key": "pkg:cpan/TIMLEGGE/IO-Compress-Brotli@0.019",
        "name": "IO-Compress-Brotli",
        "resource": "IO::Compress::Brotli",
        "strategy": "cpansa",
        "subject_version": "0.019"
      }
    ]
  },
  "details": "A buffer overflow exists in the Brotli library versions prior to 1.0.8 where an attacker controlling the input length of a \"one-shot\" decompression request to a script can trigger a crash, which happens when copying over chunks of data larger than 2 GiB. It is recommended to update your Brotli library to 1.0.8 or later. If one cannot update, we recommend to use the \"streaming\" API as opposed to the \"one-shot\" API, and impose chunk size limits.",
  "id": "BREW-exiftool-CVE-2020-36846",
  "modified": "2026-09-09T23:54:01Z",
  "published": "2026-08-13T09:21:46Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/356JOYTWW4BWSZ42SEFLV7NYHL3S3AEH/"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4TOGTZ2ZWDH662ZNFFSZVL3M5AJXV6JF/"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J4E265WKWKYMK2RYYSIXBEGZTDY5IQE6/"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M4VCDOJGL6BK3HB4XRD2WETBPYX2ITF6/"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MMBKACMLSRX7JJSKBTR35UOEP2WFR6QP/"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQLM7ABVCYJLF6JRPF3M3EBXW63GNC27/"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W23CUADGMVMQQNFKHPHXVP7RPZJZNN6I/"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WW62OZEY2GHJL4JCOLJRBSRETXDHMWRK/"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZXEQ3GQVELA2T4HNZG7VPMS2HDVXMJRG/"
    },
    {
      "type": "ADVISORY",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00108.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/google/brotli/releases/tag/v1.0.9"
    },
    {
      "type": "ADVISORY",
      "url": "https://lists.debian.org/debian-lts-announce/2020/12/msg00003.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://usn.ubuntu.com/4568-1/"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.debian.org/security/2020/dsa-4801"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2020-8927",
    "BIT-brotli-2020-8927",
    "BIT-dotnet-2020-8927",
    "BIT-dotnet-sdk-2020-8927",
    "BIT-powershell-2020-8927",
    "CVE-2020-36846",
    "GHSA-5v8v-66v8-mwm7",
    "GO-2025-3726",
    "PYSEC-2020-29",
    "RUSTSEC-2021-0131",
    "RUSTSEC-2021-0132"
  ]
}

RUSTSEC-2021-0132 (CVE-2020-36846)

Vulnerability from osv_rustsec – Published: 2021-12-20 12:00 – Updated: 2025-10-28 06:02 – Source website

Summary

Integer overflow in the bundled Brotli C library

Details

If one cannot update the C library, its authors recommend to use the "streaming" API as opposed to the "one-shot" API, and impose chunk size limits.

References

URL

Type

	https://crates.io/crates/compu-brotli-sys	PACKAGE
	https://rustsec.org/advisories/RUSTSEC-2021-0132.html	ADVISORY
	https://github.com/google/brotli/releases/tag/v1.0.9	WEB

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "memory-corruption"
        ],
        "cvss": null,
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "compu-brotli-sys",
        "purl": "pkg:cargo/compu-brotli-sys"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "1.0.9"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "CVE-2020-36846",
    "CVE-2020-8927",
    "GHSA-5v8v-66v8-mwm7"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "A buffer overflow exists in the Brotli library versions prior to 1.0.8 where an attacker controlling the input length of a \"one-shot\" decompression request to a script can trigger a crash, which happens when copying over chunks of data larger than 2 GiB.\n\nIf one cannot update the C library, its authors recommend to use the \"streaming\" API as opposed to the \"one-shot\" API, and impose chunk size limits.",
  "id": "RUSTSEC-2021-0132",
  "modified": "2025-10-28T06:02:18Z",
  "published": "2021-12-20T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/compu-brotli-sys"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2021-0132.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com/google/brotli/releases/tag/v1.0.9"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "Integer overflow in the bundled Brotli C library"
}

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.