Vulnerability-Lookup

OESA-2022-1792 (CVE-2021-46823)

Vulnerability from osv_openeuler – Published: 2022-07-30 11:05 – Updated: 2026-08-06 11:05 – Source website

Summary

python-ldap security update

Details

python-ldap provides an object-oriented API for working with LDAP within Python programs. It allows access to LDAP directory servers by wrapping the OpenLDAP 2.x libraries, and contains modules for other LDAP-related tasks (including processing LDIF, LDAPURLs, LDAPv3 schema, etc.).

Security Fix(es):

python-ldap before 3.4.0 is vulnerable to a denial of service when ldap.schema is used for untrusted schema definitions, because of a regular expression denial of service (ReDoS) flaw in the LDAP schema parser. By sending crafted regex input, a remote authenticated attacker could exploit this vulnerability to cause a denial of service condition.(CVE-2021-46823)

Severity

6.5 (Medium)


                    
                      CVSS:3.1/AV:N/AC:L/PR:L/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-2021-46823	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "python3-ldap-3.1.0-4.oe1.aarch64.rpm"
        ],
        "noarch": [
          "python-ldap-help-3.1.0-4.oe1.noarch.rpm"
        ],
        "src": [
          "python-ldap-3.1.0-4.oe1.src.rpm"
        ],
        "x86_64": [
          "python3-ldap-3.1.0-4.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "python-ldap",
        "purl": "pkg:rpm/openEuler/python-ldap\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.1.0-4.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "python-ldap-debuginfo-3.3.1-4.oe2203.aarch64.rpm",
          "python-ldap-debugsource-3.3.1-4.oe2203.aarch64.rpm",
          "python3-ldap-3.3.1-4.oe2203.aarch64.rpm"
        ],
        "noarch": [
          "python-ldap-help-3.3.1-4.oe2203.noarch.rpm"
        ],
        "src": [
          "python-ldap-3.3.1-4.oe2203.src.rpm"
        ],
        "x86_64": [
          "python3-ldap-3.3.1-4.oe2203.x86_64.rpm",
          "python-ldap-debuginfo-3.3.1-4.oe2203.x86_64.rpm",
          "python-ldap-debugsource-3.3.1-4.oe2203.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS",
        "name": "python-ldap",
        "purl": "pkg:rpm/openEuler/python-ldap\u0026distro=openEuler-22.03-LTS"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.3.1-4.oe2203"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "python-ldap provides an object-oriented API for working with LDAP within Python programs.  It allows access to LDAP directory servers by wrapping the OpenLDAP 2.x libraries, and contains modules for other LDAP-related tasks (including processing LDIF, LDAPURLs, LDAPv3 schema, etc.).\r\n\r\nSecurity Fix(es):\r\n\r\npython-ldap before 3.4.0 is vulnerable to a denial of service when ldap.schema is used for untrusted schema definitions, because of a regular expression denial of service (ReDoS) flaw in the LDAP schema parser. By sending crafted regex input, a remote authenticated attacker could exploit this vulnerability to cause a denial of service condition.(CVE-2021-46823)",
  "id": "OESA-2022-1792",
  "modified": "2026-08-06T11:05:04Z",
  "published": "2022-07-30T11:05:04Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1792"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-46823"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "python-ldap security update",
  "upstream": [
    "CVE-2021-46823"
  ]
}

CVE-2021-46823 (GCVE-0-2021-46823)

Vulnerability from cvelistv5 – Published: 2022-06-18 15:27 – Updated: 2024-08-04 05:17

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

2 references

URL	Tags
https://github.com/python-ldap/python-ldap/securi…	x_refsource_MISC
https://exchange.xforce.ibmcloud.com/vulnerabilit…	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

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          },
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            ],
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          }
        ],
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      }
    ],
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          "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/221507"
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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.