github - ghsa-6vwf-m72q-cw8h

GHSA-6VWF-M72Q-CW8H

Vulnerability from github – Published: 2022-05-13 01:34 – Updated: 2025-04-17 15:32

Details

A heap use-after-free flaw was found in curl versions from 7.59.0 through 7.61.1 in the code related to closing an easy handle. When closing and cleaning up an 'easy' handle in the Curl_close() function, the library code first frees a struct (without nulling the pointer) and might then subsequently erroneously write to a struct field within that already freed struct.

Severity ?

9.8 (Critical)


                  
                    CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2018-16840"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-10-31T18:29:00Z",
    "severity": "CRITICAL"
  },
  "details": "A heap use-after-free flaw was found in curl versions from 7.59.0 through 7.61.1 in the code related to closing an easy handle. When closing and cleaning up an \u0027easy\u0027 handle in the `Curl_close()` function, the library code first frees a struct (without nulling the pointer) and might then subsequently erroneously write to a struct field within that already freed struct.",
  "id": "GHSA-6vwf-m72q-cw8h",
  "modified": "2025-04-17T15:32:25Z",
  "published": "2022-05-13T01:34:06Z",
  "references": [
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      "url": "https://github.com/curl/curl/commit/81d135d67155c5295b1033679c606165d4e28f3f"
    },
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      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16840"
    },
    {
      "type": "WEB",
      "url": "https://curl.haxx.se/docs/CVE-2018-16840.html"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/201903-03"
    },
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      "type": "WEB",
      "url": "https://usn.ubuntu.com/3805-1"
    },
    {
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      "url": "http://www.securitytracker.com/id/1042013"
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  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2018-16840 (GCVE-0-2018-16840)

Vulnerability from cvelistv5 – Published: 2018-10-31 18:00 – Updated: 2024-08-05 10:32

Summary

A heap use-after-free flaw was found in curl versions from 7.59.0 through 7.61.1 in the code related to closing an easy handle. When closing and cleaning up an 'easy' handle in the `Curl_close()` function, the library code first frees a struct (without nulling the pointer) and might then subsequently erroneously write to a struct field within that already freed struct.

Severity ?

4.3 (Medium)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

CWE

CWE-416

Assigner

redhat

References

URL

Tags

	https://security.gentoo.org/glsa/201903-03	vendor-advisoryx_refsource_GENTOO
	https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2…	x_refsource_CONFIRM
	https://github.com/curl/curl/commit/81d135d67155c…	x_refsource_CONFIRM
	http://www.securitytracker.com/id/1042013	vdb-entryx_refsource_SECTRACK
	https://curl.haxx.se/docs/CVE-2018-16840.html	x_refsource_MISC
	https://usn.ubuntu.com/3805-1/	vendor-advisoryx_refsource_UBUNTU

Impacted products

	Vendor	Product	Version
	The Curl Project	curl	Affected: from 7.59.0 to 7.61.1

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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-6VWF-M72Q-CW8H

CVE-2018-16840 (GCVE-0-2018-16840)

Tags

Sightings

Nomenclature