CVE-2020-11985 (GCVE-0-2020-11985)

Vulnerability from cvelistv5 – Published: 2020-08-07 15:36 – Updated: 2024-08-04 11:48
VLAI
Summary
IP address spoofing when proxying using mod_remoteip and mod_rewrite For configurations using proxying with mod_remoteip and certain mod_rewrite rules, an attacker could spoof their IP address for logging and PHP scripts. Note this issue was fixed in Apache HTTP Server 2.4.24 but was retrospectively allocated a low severity CVE in 2020.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE
  • CWE-345 - Insufficient verification of data authenticity
Assigner
References
Impacted products
Vendor Product Version CPE status
n/a Apache HTTP Server Affected: 2.4.1 to 2.4.23
Show details on NVD website
To clipboard 

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            "url": "https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A2RN46PRBJE7E7OPD4YZX5SVWV5QKGV5/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HYVYE2ZERFXDV6RMKK3I5SDSDQLPSEIQ/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://security.gentoo.org/glsa/202008-04"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://security.netapp.com/advisory/ntap-20200827-0002/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://www.oracle.com/security-alerts/cpujan2021.html"
          }
        ],
        "sourceIdentifier": "security@apache.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-345"
              }
            ],
            "source": "security@apache.org",
            "type": "Secondary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-345"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T06:22:34+00:00",
      "cve": "CVE-2020-11985",
      "id": "CVE-2020-11985",
      "initial_release_date": "2020-08-07T00:00:00+00:00",
      "product_status:fixed": "138",
      "product_status:known_affected": "3",
      "product_status:known_not_affected": "22",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "httpd: IP address spoofing when proxying using mod_remoteip and mod_rewrite",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-11985.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2025-10-07T03:00:33Z",
      "cve": "CVE-2020-11985",
      "id": "CVE-2020-11985",
      "initial_release_date": "2023-02-15T03:59:25Z",
      "product_status:known_affected": "43",
      "product_status:known_not_affected": "116",
      "product_status:recommended": "135",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2020-11985",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2020-11985.json",
      "version": "9"
    }
  }
}



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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.



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.