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libapache-mod-jk — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2018-11759

The Apache Web Server (httpd) specific code that normalised the requested path before matching it to the URI-worker map in Apache Tomcat JK (mod_jk) Connector 1.2.0 to 1.2.44 did not handle some edge cases correctly. If only a sub-set of the URLs supported by Tomcat were exposed via httpd, then it was possible for a specially constructed request to expose application functionality through the reverse proxy that was not intended for clients accessing the application via the reverse proxy. It was also possible in some configurations for a specially constructed request to bypass the access controls configured in httpd. While there is some overlap between this issue and CVE-2018-1323, they are not identical.

Products
libapache-mod-jk
Affected versions
Not specified
Fixed versions
1:1.2.46-1
CVEs
CVE-2018-11759
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 00:05 UTC · Revision 1

Source evidence

DEBIAN-CVE-2018-11759

core-osv · Original source

Published 31 Oct 2018, 20:29 UTC

The Apache Web Server (httpd) specific code that normalised the requested path before matching it to the URI-worker map in Apache Tomcat JK (mod_jk) Connector 1.2.0 to 1.2.44 did not handle some edge cases correctly. If only a sub-set of the URLs supported by Tomcat were exposed via httpd, then it was possible for a specially constructed request to expose application functionality through the reverse proxy that was not intended for clients accessing the application via the reverse proxy. It was also possible in some configurations for a specially constructed request to bypass the access controls configured in httpd. While there is some overlap between this issue and CVE-2018-1323, they are not identical.

osv:DEBIAN-CVE-2018-11759

libapache-mod-jk

Fixed versions: 1:1.2.46-1

libapache-mod-jk

Fixed versions: 1:1.2.46-1

libapache-mod-jk

Fixed versions: 1:1.2.46-1

Complete source record
{
  "id": "4621270ffea92a99b35b2f042084fa51af54646c9fad1dd66768f9e13fffc12a",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2018-11759",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2018-11759",
    "summary": "The Apache Web Server (httpd) specific code that normalised the requested path before matching it to the URI-worker map in Apache Tomcat JK (mod_jk) Connector 1.2.0 to 1.2.44 did not handle some edge cases correctly. If only a sub-set of the URLs supported by Tomcat were exposed via httpd, then it was possible for a specially constructed request to expose application functionality through the reverse proxy that was not intended for clients accessing the application via the reverse proxy. It was also possible in some configurations for a specially constructed request to bypass the access controls configured in httpd. While there is some overlap between this issue and CVE-2018-1323, they are not identical.",
    "evidence": "osv:DEBIAN-CVE-2018-11759",
    "products": [
      {
        "name": {
          "value": "libapache-mod-jk",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1:1.2.46-1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libapache-mod-jk",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1:1.2.46-1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libapache-mod-jk",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1:1.2.46-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "DEBIAN-CVE-2018-11759",
      "aliases": [
        "DEBIAN-CVE-2018-11759"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1:1.2.46-1"
                }
              ]
            }
          ],
          "package": {
            "name": "libapache-mod-jk",
            "purl": "pkg:deb/debian/libapache-mod-jk?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-11759.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1:1.2.46-1"
                }
              ]
            }
          ],
          "package": {
            "name": "libapache-mod-jk",
            "purl": "pkg:deb/debian/libapache-mod-jk?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-11759.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1:1.2.46-1"
                }
              ]
            }
          ],
          "package": {
            "name": "libapache-mod-jk",
            "purl": "pkg:deb/debian/libapache-mod-jk?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-11759.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-23T18:02:57.840023345Z",
      "provider": "osv",
      "upstream": [
        "CVE-2018-11759"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2018-11759"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2018-11759",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 419944,
  "published_at": "2018-10-31T20:29:00.293+00:00"
}