Vulnerability-Lookup

Vulnerability from bitnami_vulndb

Published

2024-03-06 10:54

Modified

2025-05-20 10:02

Summary

null pointer dereference in h2 fuzzing

Details

While fuzzing the 2.4.49 httpd, a new null pointer dereference was detected during HTTP/2 request processing, allowing an external source to DoS the server. This requires a specially crafted request. The vulnerability was recently introduced in version 2.4.49. No exploit is known to the project.

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "apache",
        "purl": "pkg:bitnami/apache"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.4.49"
            },
            {
              "fixed": "2.4.50"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-41524"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:apache:http_server:2.4.49:*:*:*:*:*:*:*",
      "cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*"
    ],
    "severity": "High"
  },
  "details": "While fuzzing the 2.4.49 httpd, a new null pointer dereference was detected during HTTP/2 request processing, allowing an external source to DoS the server. This requires a specially crafted request. The vulnerability was recently introduced in version 2.4.49. No exploit is known to the project.",
  "id": "BIT-apache-2021-41524",
  "modified": "2025-05-20T10:02:07.006Z",
  "published": "2024-03-06T10:54:53.365Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2021/10/05/1"
    },
    {
      "type": "WEB",
      "url": "https://httpd.apache.org/security/vulnerabilities_24.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DSM6UWQICBJ2TU727RENU3HBKEAFLT6T/"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUVJVRJRBW5QVX4OY3NOHZDQ3B3YOTSG/"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202208-20"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20211029-0009/"
    },
    {
      "type": "WEB",
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-httpd-pathtrv-LAzg68cZ"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-41524"
    }
  ],
  "schema_version": "1.5.0",
  "summary": "null pointer dereference in h2 fuzzing"
}

CVE-2021-41524 (GCVE-0-2021-41524)

Vulnerability from cvelistv5 – Published: 2021-10-05 08:40 – Updated: 2024-08-04 03:15

Title

null pointer dereference in h2 fuzzing

Summary

Severity ?

No CVSS data available.

CWE

CWE-476 - NULL Pointer Dereference

Assigner

apache

References

URL

Tags

	https://httpd.apache.org/security/vulnerabilities…	x_refsource_MISC
	http://www.openwall.com/lists/oss-security/2021/10/05/1	mailing-listx_refsource_MLIST
	https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
	https://tools.cisco.com/security/center/content/C…	vendor-advisoryx_refsource_CISCO
	https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
	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/202208-20	vendor-advisoryx_refsource_GENTOO

Impacted products

	Vendor	Product	Version
	Apache Software Foundation	Apache HTTP Server	Affected: 2.4.49

Credits

Apache httpd team would like to thank LI ZHI XIN from NSFocus Security Team for reporting this issue.

Show details on NVD website

JSON

To clipboard

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          },
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          },
          {
            "name": "20211007 Apache HTTP Server Vulnerabilties: October 2021",
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            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-httpd-pathtrv-LAzg68cZ"
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          },
          {
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          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20211029-0009/"
          },
          {
            "name": "GLSA-202208-20",
            "tags": [
              "vendor-advisory",
              "x_refsource_GENTOO",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202208-20"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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      "credits": [
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        }
      ],
      "metrics": [
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        },
        {
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        },
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          "url": "https://security.gentoo.org/glsa/202208-20"
        }
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      "source": {
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          "time": "2021-09-17T00:00:00",
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          "time": "2021-09-26T00:00:00",
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        }
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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

Vulnerability from bitnami_vulndb

CVE-2021-41524 (GCVE-0-2021-41524)

Tags

Sightings

Nomenclature