Vulnerability-Lookup

GHSA-XFMX-53V5-938G

Vulnerability from github – Published: 2022-05-14 02:00 – Updated: 2022-05-14 02:00

Details

The URL percent-encoding decode function in libcurl before 7.51.0 is called curl_easy_unescape. Internally, even if this function would be made to allocate a unscape destination buffer larger than 2GB, it would return that new length in a signed 32 bit integer variable, thus the length would get either just truncated or both truncated and turned negative. That could then lead to libcurl writing outside of its heap based buffer.

Severity

9.8 (Critical)


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

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2016-8622"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-07-31T21:29:00Z",
    "severity": "CRITICAL"
  },
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  "id": "GHSA-xfmx-53v5-938g",
  "modified": "2022-05-14T02:00:02Z",
  "published": "2022-05-14T02:00:02Z",
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    },
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    },
    {
      "type": "WEB",
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    },
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      "type": "WEB",
      "url": "https://curl.haxx.se/docs/adv_20161102H.html"
    },
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      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/201701-47"
    },
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      "type": "WEB",
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    },
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      "type": "WEB",
      "url": "http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html"
    },
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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"
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}

CVE-2016-8622 (GCVE-0-2016-8622)

Vulnerability from cvelistv5 – Published: 2018-07-31 21:00 – Updated: 2026-04-15 20:54

Summary

The URL percent-encoding decode function in libcurl before 7.51.0 is called `curl_easy_unescape`. Internally, even if this function would be made to allocate a unscape destination buffer larger than 2GB, it would return that new length in a signed 32 bit integer variable, thus the length would get either just truncated or both truncated and turned negative. That could then lead to libcurl writing outside of its heap based buffer.

Severity

3.7 (Low)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-15 20:54 UTC

CWE

Assigner

redhat CNA under the redhat root

CNA scorecard B 81/100 over 978 records in the last 180 days details

References

9 references

URL	Tags
https://access.redhat.com/errata/RHSA-2018:3558	vendor-advisoryx_refsource_REDHAT
https://curl.haxx.se/docs/adv_20161102H.html	x_refsource_CONFIRM
https://www.tenable.com/security/tns-2016-21	x_refsource_CONFIRM
http://www.securitytracker.com/id/1037192	vdb-entryx_refsource_SECTRACK
http://www.oracle.com/technetwork/security-adviso…	x_refsource_CONFIRM
http://www.securityfocus.com/bid/94105	vdb-entryx_refsource_BID
https://access.redhat.com/errata/RHSA-2018:2486	vendor-advisoryx_refsource_REDHAT
https://security.gentoo.org/glsa/201701-47	vendor-advisoryx_refsource_GENTOO
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
The Curl Project	curl	Affected: 7.51.0

Date Public

2016-11-02 00:00

Show details on NVD website

JSON

To clipboard

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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.

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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.
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