{
  "canonical_id": "spring-boot--CVE-2022-27772",
  "system_id": "spring-boot",
  "display_name": "Spring Boot",
  "category": "frameworks",
  "advisory_mode": "core",
  "title": "Temporary Directory Hijacking to Local Privilege Escalation Vulnerability in org.springframework.boot:spring-boot",
  "summary": "spring-boot versions prior to version `v2.2.11.RELEASE` was vulnerable to temporary directory hijacking. This vulnerability impacted the `org.springframework.boot.web.server.AbstractConfigurableWebServerFactory.createTempDir` method.\n\nThe vulnerable method is used to create a work directory for embedded web servers such as Tomcat and Jetty. The directory contains configuration files, JSP/class files, etc. If a local attacker got the permission to write in this directory, they could completely take over the application (ie. local privilege escalation).\n\n#### Impact Location\n\nThis vulnerability impacted the following source location:\n\n```java\n\t/**\n\t * Return the absolute temp dir for given web server.\n\t * @param prefix server name\n\t * @return the temp dir for given server.\n\t */\n\tprotected final File createTempDir(String prefix) {\n\t\ttry {\n\t\t\tFile tempDir = File.createTempFile(prefix + \".\", \".\" + getPort());\n\t\t\ttempDir.delete();\n\t\t\ttempDir.mkdir();\n\t\t\ttempDir.deleteOnExit();\n\t\t\treturn tempDir;\n\t\t}\n```\n\\- https://github.com/spring-projects/spring-boot/blob/ce70e7d768977242a8ea6f93188388f273be5851/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/server/AbstractConfigurableWebServerFactory.java#L165-L177\n\nThis vulnerability exists because `File.mkdir` returns `false` when it fails to create a directory, it does not throw an exception. As such, the following race condition exists:\n\n```java\nFile tmpDir =File.createTempFile(prefix + \".\", \".\" + getPort()); // Attacker knows the full path of the file that will be generated\n// delete the file that was created\ntmpDir.delete(); // Attacker sees file is deleted and begins a race to create their own directory before Jetty.\n// and make a directory of the same name\n// SECURITY VULNERABILITY: Race Condition! - Attacker beats java code and now owns this directory\ntmpDir.mkdirs(); // This method returns 'false' because it was unable to create the directory. No exception is thrown.\n// Attacker can write any new files to this directory that they wish.\n// Attacker can read any files created by this process.\n```\n\n### Prerequisites\n\nThis vulnerability impacts Unix-like systems, and very old versions of Mac OSX and Windows as they all share the system temporary directory between all users.\n\n### Patches\n\nThis vulnerability was inadvertently fixed as a part of this patch: https://github.com/spring-projects/spring-boot/commit/667ccdae84822072f9ea1a27ed5c77964c71002d\n\nThis vulnerability is patched in versions `v2.2.11.RELEASE` or later.\n\n### Workarounds\n\nSetting the `java.io.tmpdir` system environment variable to a directory that is exclusively owned by the executing user will fix this vulnerability for all operating systems.",
  "published_at": "2022-07-11T20:59:02Z",
  "updated_at": "2026-03-13T21:59:19.426456Z",
  "severity": "low",
  "cvss_score": 3.1,
  "exploit_status": "unknown",
  "source_confidence": "ecosystem-authority",
  "official_source_url": "https://github.com/JLLeitschuh/security-research/security/advisories/GHSA-cm59-pr5q-cw85",
  "secondary_source_urls": [
    "https://nvd.nist.gov/vuln/detail/CVE-2022-27772",
    "https://github.com/spring-projects/spring-boot/commit/667ccdae84822072f9ea1a27ed5c77964c71002d",
    "https://github.com/spring-projects/spring-boot"
  ],
  "aliases": [
    "CVE-2022-27772",
    "GHSA-cm59-pr5q-cw85"
  ],
  "cve_ids": [
    "CVE-2022-27772"
  ],
  "ghsa_ids": [
    "GHSA-cm59-pr5q-cw85"
  ],
  "osv_ids": [
    "GHSA-cm59-pr5q-cw85"
  ],
  "affected_versions": [
    "1.0.0.RELEASE",
    "1.0.1.RELEASE",
    "1.0.2.RELEASE",
    "1.1.0.RELEASE",
    "1.1.1.RELEASE",
    "1.1.10.RELEASE",
    "1.1.11.RELEASE",
    "1.1.12.RELEASE",
    "1.1.2.RELEASE",
    "1.1.3.RELEASE",
    "1.1.4.RELEASE",
    "1.1.5.RELEASE",
    "1.1.6.RELEASE",
    "1.1.7.RELEASE",
    "1.1.8.RELEASE",
    "1.1.9.RELEASE",
    "1.2.0.RELEASE",
    "1.2.1.RELEASE",
    "1.2.2.RELEASE",
    "1.2.3.RELEASE",
    "introduced=0, fixed<2.2.11.RELEASE"
  ],
  "fixed_versions": [
    "2.2.11.RELEASE"
  ],
  "package_name": "org.springframework.boot:spring-boot",
  "render_markdown": true,
  "case_path": "07-framework-security/frameworks/spring-boot/cases/spring-boot-cve-2022-27772.md",
  "secure_code_topics": [
    "proxy-trust-boundary",
    "authz-server-side-recheck"
  ],
  "status": "generated",
  "triage_reasons": [],
  "verification_status": "triage-manual",
  "verification_mode": "synthetic",
  "last_verified_at": null,
  "last_run_id": null,
  "evidence_bundle": null,
  "historical_status": null,
  "latest_status": null,
  "browser_evidence": {
    "required": false,
    "present": false,
    "refs": []
  },
  "repro_profile_id": "authz-bypass-generic",
  "artifact_mode": "synthetic",
  "blocked_reason": null,
  "metadata": {
    "source_names": [
      "OSV Spring Boot"
    ],
    "source_kinds": [
      "osv-batch"
    ],
    "candidate_count": 1
  }
}