CVE-2021-39275 (GCVE-0-2021-39275)

Vulnerability from cvelistv5 – Published: 2021-09-16 14:40 – Updated: 2024-08-04 02:06
VLAI
Title
ap_escape_quotes buffer overflow
Summary
ap_escape_quotes() may write beyond the end of a buffer when given malicious input. No included modules pass untrusted data to these functions, but third-party / external modules may. This issue affects Apache HTTP Server 2.4.48 and earlier.
Severity
No CVSS data available.
CWE
  • Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version CPE status
Apache Software Foundation Apache HTTP Server Affected: Apache HTTP Server 2.4 , ≤ 2.4.48 (custom)
guessed Create a notification for this product.
Credits
ClusterFuzz
Show details on NVD website
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      "id": "CVE-2021-39275",
      "lastModified": "2024-11-21T06:19:05.913",
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      "published": "2021-09-16T15:15:07.580",
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      "sourceIdentifier": "security@apache.org",
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    },
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Advisory\"]},{\"url\":\"https://www.debian.org/security/2021/dsa-4982\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpuapr2022.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpujan2022.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T07:48:46+00:00",
      "cve": "CVE-2021-39275",
      "id": "CVE-2021-39275",
      "initial_release_date": "2021-09-16T00:00:00+00:00",
      "product_status:fixed": "218",
      "product_status:known_affected": "13",
      "product_status:known_not_affected": "141",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "httpd: Out-of-bounds write in ap_escape_quotes() via malicious input",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-39275.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-07-25T17:39:25Z",
      "cve": "CVE-2021-39275",
      "id": "CVE-2021-39275",
      "initial_release_date": "2023-02-15T03:38:14Z",
      "product_status:known_affected": "419",
      "product_status:known_not_affected": "1",
      "product_status:recommended": "421",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-39275",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-39275.json",
      "version": "34"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.