Vulnerability-Lookup

OESA-2021-1389 (CVE-2021-21705)

Vulnerability from osv_openeuler – Published: 2021-10-15 11:04 – Updated: 2026-08-06 11:04 – Source website

Summary

php security update

Details

PHP is an HTML-embedded scripting language. PHP attempts to make it easy for developers to write dynamically generated web pages. PHP also offers built-in database integration for several commercial and non-commercial database management systems, so writing a database-enabled webpage with PHP is fairly simple. The most common use of PHP coding is probably as a replacement for CGI scripts. The php package contains the module (often referred to as mod_php) which adds support for the PHP language to Apache HTTP Server.

Security Fix(es):

In PHP versions 7.3.x below 7.3.29, 7.4.x below 7.4.21 and 8.0.x below 8.0.8, when using URL validation functionality via filter_var() function with FILTER_VALIDATE_URL parameter, an URL with invalid password field can be accepted as valid. This can lead to the code incorrectly parsing the URL and potentially leading to other security implications - like contacting a wrong server or making a wrong access decision.(CVE-2021-21705)

In PHP versions 7.3.x below 7.3.29, 7.4.x below 7.4.21 and 8.0.x below 8.0.8, when using Firebird PDO driver extension, a malicious database server could cause crashes in various database functions, such as getAttribute(), execute(), fetch() and others by returning invalid response data that is not parsed correctly by the driver. This can result in crashes, denial of service or potentially memory corruption.(CVE-2021-21704)

Severity

5.9 (Medium)


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

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-21705	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-21704	ADVISORY

JSON

To clipboard

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        }
      ]
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  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "PHP is an HTML-embedded scripting language. PHP attempts to make it easy for developers to write dynamically generated web pages. PHP also offers built-in database integration for several commercial and non-commercial database management systems, so writing a database-enabled webpage with PHP is fairly simple. The most common use of PHP coding is probably as a replacement for CGI scripts. The php package contains the module (often referred to as mod_php) which adds support for the PHP language to Apache HTTP Server.\r\n\r\nSecurity Fix(es):\r\n\r\nIn PHP versions 7.3.x below 7.3.29, 7.4.x below 7.4.21 and 8.0.x below 8.0.8, when using URL validation functionality via filter_var() function with FILTER_VALIDATE_URL parameter, an URL with invalid password field can be accepted as valid. This can lead to the code incorrectly parsing the URL and potentially leading to other security implications - like contacting a wrong server or making a wrong access decision.(CVE-2021-21705)\r\n\r\nIn PHP versions 7.3.x below 7.3.29, 7.4.x below 7.4.21 and 8.0.x below 8.0.8, when using Firebird PDO driver extension, a malicious database server could cause crashes in various database functions, such as getAttribute(), execute(), fetch() and others by returning invalid response data that is not parsed correctly by the driver. This can result in crashes, denial of service or potentially memory corruption.(CVE-2021-21704)",
  "id": "OESA-2021-1389",
  "modified": "2026-08-06T11:04:39Z",
  "published": "2021-10-15T11:04:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1389"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21705"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21704"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "php security update",
  "upstream": [
    "CVE-2021-21705",
    "CVE-2021-21704"
  ]
}

CVE-2021-21704 (GCVE-0-2021-21704)

Vulnerability from cvelistv5 – Published: 2021-10-04 04:00 – Updated: 2024-09-17 00:45

Title

Multiple vulnerabilities in Firebird client extension

Summary

Severity

5 (Medium)


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

CWE

CWE-125 - Out-of-bounds Read
CWE-190 - Integer Overflow or Wraparound

Assigner

php mitre root

References

6 references

URL	Tags
https://bugs.php.net/bug.php?id=76448	x_refsource_MISC
https://bugs.php.net/bug.php?id=76449	x_refsource_MISC
https://bugs.php.net/bug.php?id=76450	x_refsource_MISC
https://bugs.php.net/bug.php?id=76452	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2021102…	x_refsource_CONFIRM
https://security.gentoo.org/glsa/202209-20	vendor-advisoryx_refsource_GENTOO

Impacted products

1 product

Vendor	Product	Version
PHP Group	PHP	Affected: 7.3.x , < 7.3.29 (custom) Affected: 7.4.x , < 7.4.21 (custom) Affected: 8.0.X , < 8.0.8 (custom)

Date Public

2021-06-21 00:00

Credits

reported by trichimtrich at gmail dot com

Show details on NVD website

JSON

To clipboard

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            },
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-190 Integer Overflow or Wraparound"
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              ]
            }
          ]
        },
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            },
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              "url": "https://security.gentoo.org/glsa/202209-20"
            }
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CVE-2021-21705 (GCVE-0-2021-21705)

Vulnerability from cvelistv5 – Published: 2021-10-04 04:00 – Updated: 2024-09-17 04:09

Title

Incorrect URL validation in FILTER_VALIDATE_URL

Summary

Severity

4.3 (Medium)


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

CWE

CWE-20 - Improper Input Validation

Assigner

php mitre root

References

4 references

URL	Tags
https://bugs.php.net/bug.php?id=81122	x_refsource_MISC
https://www.oracle.com/security-alerts/cpujan2022.html	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2021102…	x_refsource_CONFIRM
https://security.gentoo.org/glsa/202209-20	vendor-advisoryx_refsource_GENTOO

Impacted products

1 product

Vendor	Product	Version
PHP Group	PHP	Affected: 7.3.x , < 7.3.29 (custom) Affected: 7.4.x , < 7.4.21 (custom) Affected: 8.0.X , < 8.0.8 (custom)

Date Public

2021-06-28 00:00

Credits

reported by vi at hackberry dot xyz

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.

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.

Action not permitted

OESA-2021-1389 (CVE-2021-21705)

CVE-2021-21704 (GCVE-0-2021-21704)

CVE-2021-21705 (GCVE-0-2021-21705)

Tags

Sightings

Nomenclature

Related by attack behaviour