usn-5222-1
Vulnerability from osv_ubuntu
Published
2022-01-11 20:42
Modified
2026-06-01 07:03
Summary
apache-log4j2 vulnerabilities
Details

It was discovered that Apache Log4j 2 was vulnerable to remote code execution (RCE) attack when configured to use a JDBC Appender with a JNDI LDAP data source URI. A remote attacker could possibly use this issue to cause a crash, leading to a denial of service. (CVE-2021-44832)

Hideki Okamoto and Guy Lederfein discovered that Apache Log4j 2 did not protect against infinite recursion in lookup evaluation. A remote attacker could possibly use this issue to cause Apache Log4j 2 to crash, leading to a denial of service. This issue only affected Ubuntu 18.04 LTS. (CVE-2021-45105)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-44832",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-45105",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "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"
            },
            {
              "fixed": "2.12.4-0ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.8.2-1",
        "2.8.2-2",
        "2.10.0-1",
        "2.10.0-2",
        "2.10.0-2ubuntu0.1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-44832",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "liblog4j2-java",
            "binary_version": "2.17.1-0.20.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "apache-log4j2",
        "purl": "pkg:deb/ubuntu/apache-log4j2@2.17.1-0.20.04.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.17.1-0.20.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.11.1-2",
        "2.11.2-1",
        "2.15.0-0.20.04.1",
        "2.16.0-0.20.04.1",
        "2.17.0-0.20.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that Apache Log4j 2 was vulnerable to remote code\nexecution (RCE) attack when configured to use a JDBC Appender with a\nJNDI LDAP data source URI. A remote attacker could possibly use this issue to\ncause a crash, leading to a denial of service. (CVE-2021-44832)\n\nHideki Okamoto and Guy Lederfein discovered that Apache Log4j 2 did not\nprotect against infinite recursion in lookup evaluation. A remote attacker\ncould possibly use this issue to cause Apache Log4j 2 to crash, leading to\na denial of service. This issue only affected Ubuntu 18.04 LTS.\n(CVE-2021-45105)\n",
  "id": "USN-5222-1",
  "modified": "2026-06-01T07:03:53Z",
  "published": "2022-01-11T20:42:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5222-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-44832"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-45105"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "apache-log4j2 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2021-44832",
    "UBUNTU-CVE-2021-45105"
  ]
}



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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.