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GSD-2020-9488

Vulnerability from gsd - Updated: 2023-12-13 01:21
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
Aliases
Aliases

{
  "GSD": {
    "alias": "CVE-2020-9488",
    "description": "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.",
    "id": "GSD-2020-9488",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-9488.html",
      "https://www.debian.org/security/2021/dsa-5020",
      "https://access.redhat.com/errata/RHSA-2022:0507",
      "https://access.redhat.com/errata/RHSA-2022:0497",
      "https://access.redhat.com/errata/RHSA-2021:5134",
      "https://access.redhat.com/errata/RHSA-2021:1044",
      "https://access.redhat.com/errata/RHSA-2021:0603",
      "https://access.redhat.com/errata/RHSA-2020:5568",
      "https://access.redhat.com/errata/RHSA-2020:3817",
      "https://access.redhat.com/errata/RHSA-2020:3779",
      "https://access.redhat.com/errata/RHSA-2020:3626",
      "https://access.redhat.com/errata/RHSA-2020:2391"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-9488"
      ],
      "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": "GSD-2020-9488",
      "modified": "2023-12-13T01:21:52.909417Z",
      "schema_version": "1.4.0"
    }
  },
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                          "version_affected": "\u003c",
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    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "(,2.12.3),[2.13.0,2.13.2)",
          "affected_versions": "All versions before 2.12.3, all versions starting from 2.13.0 up to 2.13.2",
          "cvss_v2": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-295",
            "CWE-937"
          ],
          "date": "2021-12-27",
          "description": "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_versions": [
            "2.12.3",
            "2.13.2"
          ],
          "identifier": "CVE-2020-9488",
          "identifiers": [
            "CVE-2020-9488"
          ],
          "not_impacted": "All version starting from 2.12.3 before 2.13.0, all versions starting from 2.13.2",
          "package_slug": "maven/log4j/log4j",
          "pubdate": "2020-04-27",
          "solution": "Upgrade to version 2.12.3, 2.13.2 or above.",
          "title": "Improper Certificate Validation",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-9488",
            "https://issues.apache.org/jira/browse/LOG4J2-2819"
          ],
          "uuid": "722bf510-eea6-461a-9cf2-dd0ba736859f"
        },
        {
          "affected_range": "(,2.12.3),[2.13.0,2.13.2)",
          "affected_versions": "All versions before 2.12.3, all versions starting from 2.13.0 up to 2.13.2",
          "cvss_v2": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
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          "description": "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.",
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          "package_slug": "maven/org.apache.logging.log4j/log4j-core",
          "pubdate": "2020-04-27",
          "solution": "Upgrade to version 2.12.3, 2.13.2 or above.",
          "title": "Improper Certificate Validation",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-9488",
            "https://issues.apache.org/jira/browse/LOG4J2-2819"
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          "pubdate": "2020-04-27",
          "solution": "Upgrade to version 2.12.3, 2.13.2 or above.",
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              "url": "https://lists.apache.org/thread.html/r2721aba31a8562639c4b937150897e24f78f747cdbda8641c0f659fe@%3Cusers.kafka.apache.org%3E"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpuoct2021.html",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
            },
            {
              "name": "DSA-5020",
              "refsource": "DEBIAN",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://www.debian.org/security/2021/dsa-5020"
            },
            {
              "name": "[debian-lts-announce] 20211226 [SECURITY] [DLA 2852-1] apache-log4j2 security update",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00017.html"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpuapr2022.html",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 4.3,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 8.6,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.7,
            "baseSeverity": "LOW",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.2,
          "impactScore": 1.4
        }
      },
      "lastModifiedDate": "2022-05-12T15:00Z",
      "publishedDate": "2020-04-27T16:15Z"
    }
  }
}



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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.

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Detection rules are retrieved from Rulezet.

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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.


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