ubuntu-cve-2021-28994
Vulnerability from osv_ubuntu
Published
2021-03-31 23:15
Modified
2026-04-22 07:39
Summary
Details

kopano-ical (formerly zarafa-ical) in Kopano Groupware Core through 8.7.16, 9.x through 9.1.0, 10.x through 10.0.7, and 11.x through 11.0.1 and Zarafa 6.30.x through 7.2.x allows memory exhaustion via long HTTP headers.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "kopano-archiver",
            "binary_version": "8.5.5-0ubuntu1+esm1"
          },
          {
            "binary_name": "kopano-backup",
            "binary_version": "8.5.5-0ubuntu1+esm1"
          },
          {
            "binary_name": "kopano-common",
            "binary_version": "8.5.5-0ubuntu1+esm1"
          },
          {
            "binary_name": "kopano-contacts",
            "binary_version": "8.5.5-0ubuntu1+esm1"
          },
          {
            "binary_name": "kopano-core",
            "binary_version": "8.5.5-0ubuntu1+esm1"
          },
          {
            "binary_name": "kopano-dagent",
            "binary_version": "8.5.5-0ubuntu1+esm1"
          },
          {
            "binary_name": "kopano-gateway",
            "binary_version": "8.5.5-0ubuntu1+esm1"
          },
          {
            "binary_name": "kopano-ical",
            "binary_version": "8.5.5-0ubuntu1+esm1"
          },
          {
            "binary_name": "kopano-l10n",
            "binary_version": "8.5.5-0ubuntu1+esm1"
          },
          {
            "binary_name": "kopano-libs",
            "binary_version": "8.5.5-0ubuntu1+esm1"
          },
          {
            "binary_name": "kopano-monitor",
            "binary_version": "8.5.5-0ubuntu1+esm1"
          },
          {
            "binary_name": "kopano-presence",
            "binary_version": "8.5.5-0ubuntu1+esm1"
          },
          {
            "binary_name": "kopano-search",
            "binary_version": "8.5.5-0ubuntu1+esm1"
          },
          {
            "binary_name": "kopano-server",
            "binary_version": "8.5.5-0ubuntu1+esm1"
          },
          {
            "binary_name": "kopano-spooler",
            "binary_version": "8.5.5-0ubuntu1+esm1"
          },
          {
            "binary_name": "kopano-utils",
            "binary_version": "8.5.5-0ubuntu1+esm1"
          },
          {
            "binary_name": "php-mapi",
            "binary_version": "8.5.5-0ubuntu1+esm1"
          },
          {
            "binary_name": "php7.1-mapi",
            "binary_version": "8.5.5-0ubuntu1+esm1"
          },
          {
            "binary_name": "python-kopano",
            "binary_version": "8.5.5-0ubuntu1+esm1"
          },
          {
            "binary_name": "python-mapi",
            "binary_version": "8.5.5-0ubuntu1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "kopanocore",
        "purl": "pkg:deb/ubuntu/kopanocore@8.5.5-0ubuntu1+esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.1.0-3ubuntu5",
        "8.1.0-3ubuntu6",
        "8.3.4-4ubuntu4",
        "8.5.2-1ubuntu1",
        "8.5.5-0ubuntu1",
        "8.5.5-0ubuntu1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "kopano-archiver",
            "binary_version": "8.7.0-7ubuntu1.1"
          },
          {
            "binary_name": "kopano-backup",
            "binary_version": "8.7.0-7ubuntu1.1"
          },
          {
            "binary_name": "kopano-common",
            "binary_version": "8.7.0-7ubuntu1.1"
          },
          {
            "binary_name": "kopano-contacts",
            "binary_version": "8.7.0-7ubuntu1.1"
          },
          {
            "binary_name": "kopano-core",
            "binary_version": "8.7.0-7ubuntu1.1"
          },
          {
            "binary_name": "kopano-dagent",
            "binary_version": "8.7.0-7ubuntu1.1"
          },
          {
            "binary_name": "kopano-gateway",
            "binary_version": "8.7.0-7ubuntu1.1"
          },
          {
            "binary_name": "kopano-ical",
            "binary_version": "8.7.0-7ubuntu1.1"
          },
          {
            "binary_name": "kopano-l10n",
            "binary_version": "8.7.0-7ubuntu1.1"
          },
          {
            "binary_name": "kopano-libs",
            "binary_version": "8.7.0-7ubuntu1.1"
          },
          {
            "binary_name": "kopano-monitor",
            "binary_version": "8.7.0-7ubuntu1.1"
          },
          {
            "binary_name": "kopano-presence",
            "binary_version": "8.7.0-7ubuntu1.1"
          },
          {
            "binary_name": "kopano-search",
            "binary_version": "8.7.0-7ubuntu1.1"
          },
          {
            "binary_name": "kopano-server",
            "binary_version": "8.7.0-7ubuntu1.1"
          },
          {
            "binary_name": "kopano-spamd",
            "binary_version": "8.7.0-7ubuntu1.1"
          },
          {
            "binary_name": "kopano-spooler",
            "binary_version": "8.7.0-7ubuntu1.1"
          },
          {
            "binary_name": "kopano-utils",
            "binary_version": "8.7.0-7ubuntu1.1"
          },
          {
            "binary_name": "php-mapi",
            "binary_version": "8.7.0-7ubuntu1.1"
          },
          {
            "binary_name": "python3-kopano",
            "binary_version": "8.7.0-7ubuntu1.1"
          },
          {
            "binary_name": "python3-mapi",
            "binary_version": "8.7.0-7ubuntu1.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "kopanocore",
        "purl": "pkg:deb/ubuntu/kopanocore@8.7.0-7ubuntu1.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.7.0-3build2",
        "8.7.0-5ubuntu5",
        "8.7.0-5ubuntu6",
        "8.7.0-6ubuntu1",
        "8.7.0-6ubuntu2",
        "8.7.0-6ubuntu3",
        "8.7.0-7ubuntu1",
        "8.7.0-7ubuntu1.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "kopano-archiver",
            "binary_version": "8.7.0-7.1ubuntu10.1"
          },
          {
            "binary_name": "kopano-backup",
            "binary_version": "8.7.0-7.1ubuntu10.1"
          },
          {
            "binary_name": "kopano-common",
            "binary_version": "8.7.0-7.1ubuntu10.1"
          },
          {
            "binary_name": "kopano-contacts",
            "binary_version": "8.7.0-7.1ubuntu10.1"
          },
          {
            "binary_name": "kopano-core",
            "binary_version": "8.7.0-7.1ubuntu10.1"
          },
          {
            "binary_name": "kopano-dagent",
            "binary_version": "8.7.0-7.1ubuntu10.1"
          },
          {
            "binary_name": "kopano-gateway",
            "binary_version": "8.7.0-7.1ubuntu10.1"
          },
          {
            "binary_name": "kopano-ical",
            "binary_version": "8.7.0-7.1ubuntu10.1"
          },
          {
            "binary_name": "kopano-l10n",
            "binary_version": "8.7.0-7.1ubuntu10.1"
          },
          {
            "binary_name": "kopano-libs",
            "binary_version": "8.7.0-7.1ubuntu10.1"
          },
          {
            "binary_name": "kopano-monitor",
            "binary_version": "8.7.0-7.1ubuntu10.1"
          },
          {
            "binary_name": "kopano-presence",
            "binary_version": "8.7.0-7.1ubuntu10.1"
          },
          {
            "binary_name": "kopano-search",
            "binary_version": "8.7.0-7.1ubuntu10.1"
          },
          {
            "binary_name": "kopano-server",
            "binary_version": "8.7.0-7.1ubuntu10.1"
          },
          {
            "binary_name": "kopano-spamd",
            "binary_version": "8.7.0-7.1ubuntu10.1"
          },
          {
            "binary_name": "kopano-spooler",
            "binary_version": "8.7.0-7.1ubuntu10.1"
          },
          {
            "binary_name": "kopano-utils",
            "binary_version": "8.7.0-7.1ubuntu10.1"
          },
          {
            "binary_name": "php-mapi",
            "binary_version": "8.7.0-7.1ubuntu10.1"
          },
          {
            "binary_name": "python3-kopano",
            "binary_version": "8.7.0-7.1ubuntu10.1"
          },
          {
            "binary_name": "python3-mapi",
            "binary_version": "8.7.0-7.1ubuntu10.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "kopanocore",
        "purl": "pkg:deb/ubuntu/kopanocore@8.7.0-7.1ubuntu10.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.7.0-7.1ubuntu4",
        "8.7.0-7.1ubuntu6",
        "8.7.0-7.1ubuntu7",
        "8.7.0-7.1ubuntu8",
        "8.7.0-7.1ubuntu10",
        "8.7.0-7.1ubuntu10.1"
      ]
    }
  ],
  "aliases": [],
  "details": "kopano-ical (formerly zarafa-ical) in Kopano Groupware Core through 8.7.16, 9.x through 9.1.0, 10.x through 10.0.7, and 11.x through 11.0.1 and Zarafa 6.30.x through 7.2.x allows memory exhaustion via long HTTP headers.",
  "id": "UBUNTU-CVE-2021-28994",
  "modified": "2026-04-22T07:39:59Z",
  "published": "2021-03-31T23:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-28994"
    },
    {
      "type": "REPORT",
      "url": "https://www.openwall.com/lists/oss-security/2021/03/19/6"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-28994"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-28994"
  ]
}



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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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Detection rules are retrieved from Rulezet.