github - ghsa-hrfc-mjc4-cv8f

GHSA-HRFC-MJC4-CV8F

Vulnerability from github – Published: 2022-05-24 17:46 – Updated: 2022-08-06 00:00

Details

There's a flaw in the zeromq server in versions before 4.3.3 in src/decoder_allocators.hpp. The decoder static allocator could have its sized changed, but the buffer would remain the same as it is a static buffer. A remote, unauthenticated attacker who sends a crafted request to the zeromq server could trigger a buffer overflow WRITE of arbitrary data if CURVE/ZAP authentication is not enabled. The greatest impact of this flaw is to application availability, data integrity, and confidentiality.

Severity ?

8.1 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2021-20235"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-120",
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-04-01T14:15:00Z",
    "severity": "HIGH"
  },
  "details": "There\u0027s a flaw in the zeromq server in versions before 4.3.3 in src/decoder_allocators.hpp. The decoder static allocator could have its sized changed, but the buffer would remain the same as it is a static buffer. A remote, unauthenticated attacker who sends a crafted request to the zeromq server could trigger a buffer overflow WRITE of arbitrary data if CURVE/ZAP authentication is not enabled. The greatest impact of this flaw is to application availability, data integrity, and confidentiality.",
  "id": "GHSA-hrfc-mjc4-cv8f",
  "modified": "2022-08-06T00:00:40Z",
  "published": "2022-05-24T17:46:03Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/zeromq/libzmq/security/advisories/GHSA-fc3w-qxf5-7hp6"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-20235"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1921983"
    }
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  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2021-20235 (GCVE-0-2021-20235)

Vulnerability from cvelistv5 – Published: 2021-04-01 13:47 – Updated: 2024-08-03 17:37

Summary

Severity ?

No CVSS data available.

CWE

CWE-120 - >CWE-787

Assigner

redhat

References

URL

Tags

	https://bugzilla.redhat.com/show_bug.cgi?id=1921983	x_refsource_MISC
	https://github.com/zeromq/libzmq/security/advisor…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	n/a	zeromq	Affected: zeromq 4.3.3

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-HRFC-MJC4-CV8F

CVE-2021-20235 (GCVE-0-2021-20235)

Tags

Sightings

Nomenclature