ubuntu-cve-2020-9488
Vulnerability from osv_ubuntu
Published
2020-04-27 16:15
Modified
2026-06-01 07:05
Summary
Details

Improper validation of certificate with host mismatch in Apache Log4j SMTP appender. This could allow an SMTPS connection to be intercepted by a man-in-the-middle attack which could leak any log messages sent through that appender. Fixed in Apache Log4j 2.12.3 and 2.13.1

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

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "liblog4j2-java",
            "binary_version": "2.4-2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "apache-log4j2",
        "purl": "pkg:deb/ubuntu/apache-log4j2@2.4-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.2-1",
        "2.4-1",
        "2.4-2",
        "2.4-2ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "liblog4j2-java",
            "binary_version": "2.12.4-0ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "apache-log4j2",
        "purl": "pkg:deb/ubuntu/apache-log4j2@2.12.4-0ubuntu0.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.8.2-1",
        "2.8.2-2",
        "2.10.0-1",
        "2.10.0-2",
        "2.10.0-2ubuntu0.1",
        "2.12.4-0ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "liblog4j2-java",
            "binary_version": "2.16.0-0.20.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "apache-log4j2",
        "purl": "pkg:deb/ubuntu/apache-log4j2@2.16.0-0.20.04.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.16.0-0.20.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.11.1-2",
        "2.11.2-1",
        "2.15.0-0.20.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "Improper validation of certificate with host mismatch in Apache Log4j SMTP appender. This could allow an SMTPS connection to be intercepted by a man-in-the-middle attack which could leak any log messages sent through that appender. Fixed in Apache Log4j 2.12.3 and 2.13.1",
  "id": "UBUNTU-CVE-2020-9488",
  "modified": "2026-06-01T07:05:24Z",
  "published": "2020-04-27T16:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-9488"
    },
    {
      "type": "REPORT",
      "url": "https://www.openwall.com/lists/oss-security/2020/04/25/1"
    },
    {
      "type": "REPORT",
      "url": "https://issues.apache.org/jira/browse/LOG4J2-2819"
    },
    {
      "type": "REPORT",
      "url": "https://gitbox.apache.org/repos/asf?p=logging-log4j2.git;h=6851b5083ef9610bae320bf07e1f24d2aa08851b"
    },
    {
      "type": "REPORT",
      "url": "https://gitbox.apache.org/repos/asf?p=logging-log4j2.git;h=fb91a3d71e2f3dadad6fd1beb2ab857f44fe8bbb"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-9488"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2020-9488"
  ]
}



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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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