Vulnerability-Lookup

FKIE_CVE-2020-7065

Vulnerability from fkie_nvd - Published: 2020-04-01 04:15 - Updated: 2026-06-17 03:24

Severity

7.4 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Summary

In PHP versions 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while using mb_strtolower() function with UTF-32LE encoding, certain invalid strings could cause PHP to overwrite stack-allocated buffer. This could lead to memory corruption, crashes and potentially code execution.

References

URL	Tags
security@php.net	https://bugs.php.net/bug.php?id=79371	Exploit, Issue Tracking, Patch, Vendor Advisory
security@php.net	https://security.netapp.com/advisory/ntap-20200403-0001/	Third Party Advisory
security@php.net	https://usn.ubuntu.com/4330-1/	Third Party Advisory
security@php.net	https://usn.ubuntu.com/4330-2/	Third Party Advisory
security@php.net	https://www.debian.org/security/2020/dsa-4719	Third Party Advisory
security@php.net	https://www.oracle.com/security-alerts/cpuoct2021.html	Patch, Third Party Advisory
security@php.net	https://www.php.net/ChangeLog-7.php#7.4.4	Release Notes, Vendor Advisory
security@php.net	https://www.tenable.com/security/tns-2021-14	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://bugs.php.net/bug.php?id=79371	Exploit, Issue Tracking, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://security.netapp.com/advisory/ntap-20200403-0001/	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://usn.ubuntu.com/4330-1/	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://usn.ubuntu.com/4330-2/	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.debian.org/security/2020/dsa-4719	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.oracle.com/security-alerts/cpuoct2021.html	Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.php.net/ChangeLog-7.php#7.4.4	Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.tenable.com/security/tns-2021-14	Third Party Advisory

Impacted products

Vendor	Product	Version
php	php	*
php	php	*
debian	debian_linux	10.0
canonical	ubuntu_linux	12.04
canonical	ubuntu_linux	14.04
canonical	ubuntu_linux	16.04
canonical	ubuntu_linux	18.04
canonical	ubuntu_linux	19.10
canonical	ubuntu_linux	20.04
tenable	tenable.sc	*

JSON

To clipboard

{
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          "product": "PHP",
          "vendor": "PHP Group",
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    },
    {
      "lang": "es",
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  ],
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  "lastModified": "2026-06-17T03:24:17.803",
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    },
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}

CVE-2020-7065 (GCVE-0-2020-7065)

Vulnerability from cvelistv5 – Published: 2020-04-01 03:35 – Updated: 2024-09-17 04:25

Title

mb_strtolower (UTF-32LE): stack-buffer-overflow at php_unicode_tolower_full

Summary

Severity

7.4 (High)


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

CWE

CWE-121 - Stack-based Buffer Overflow

Assigner

php mitre root

References

8 references

URL	Tags
https://usn.ubuntu.com/4330-1/	vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4330-2/	vendor-advisoryx_refsource_UBUNTU
https://www.debian.org/security/2020/dsa-4719	vendor-advisoryx_refsource_DEBIAN
https://security.netapp.com/advisory/ntap-2020040…	x_refsource_CONFIRM
https://www.oracle.com/security-alerts/cpuoct2021.html	x_refsource_MISC
https://bugs.php.net/bug.php?id=79371	x_refsource_MISC
https://www.php.net/ChangeLog-7.php#7.4.4	x_refsource_CONFIRM
https://www.tenable.com/security/tns-2021-14	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
PHP Group	PHP	Affected: 7.3.x , < 7.3.16 (custom) Affected: 7.4.x , < 7.4.4 (custom)

Date Public

2020-03-17 00:00

Credits

anatoly dot trosinenko at gmail dot com

Show details on NVD website

JSON

To clipboard

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        },
        "generator": {
          "engine": "Vulnogram 0.0.9"
        },
        "impact": {
          "cvss": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-121 Stack-based Buffer Overflow"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "USN-4330-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/4330-1/"
            },
            {
              "name": "USN-4330-2",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/4330-2/"
            },
            {
              "name": "DSA-4719",
              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2020/dsa-4719"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20200403-0001/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20200403-0001/"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpuoct2021.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
            },
            {
              "name": "https://bugs.php.net/bug.php?id=79371",
              "refsource": "MISC",
              "url": "https://bugs.php.net/bug.php?id=79371"
            },
            {
              "name": "https://www.php.net/ChangeLog-7.php#7.4.4",
              "refsource": "CONFIRM",
              "url": "https://www.php.net/ChangeLog-7.php#7.4.4"
            },
            {
              "name": "https://www.tenable.com/security/tns-2021-14",
              "refsource": "CONFIRM",
              "url": "https://www.tenable.com/security/tns-2021-14"
            }
          ]
        },
        "source": {
          "defect": [
            "https://bugs.php.net/bug.php?id=79371"
          ],
          "discovery": "EXTERNAL"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "dd77f84a-d19a-4638-8c3d-a322d820ed2b",
    "assignerShortName": "php",
    "cveId": "CVE-2020-7065",
    "datePublished": "2020-04-01T03:35:13.554Z",
    "dateReserved": "2020-01-15T00:00:00.000Z",
    "dateUpdated": "2024-09-17T04:25:45.769Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

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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FKIE_CVE-2020-7065

CVE-2020-7065 (GCVE-0-2020-7065)

Tags

Sightings

Nomenclature

Related by attack behaviour