{"id":"GHSA-cm59-pr5q-cw85","summary":"Temporary Directory Hijacking to Local Privilege Escalation Vulnerability in org.springframework.boot:spring-boot","details":"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.","aliases":["CVE-2022-27772"],"modified":"2026-05-01T04:15:14.773449498Z","published":"2022-07-11T20:59:02Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2022-07-11T20:59:02Z","nvd_published_at":"2022-03-30T18:15:00Z","cwe_ids":["CWE-377","CWE-379","CWE-668"],"severity":"HIGH"},"references":[{"type":"WEB","url":"https://github.com/JLLeitschuh/security-research/security/advisories/GHSA-cm59-pr5q-cw85"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-27772"},{"type":"WEB","url":"https://github.com/spring-projects/spring-boot/commit/667ccdae84822072f9ea1a27ed5c77964c71002d"},{"type":"PACKAGE","url":"https://github.com/spring-projects/spring-boot"}],"affected":[{"package":{"name":"org.springframework.boot:spring-boot","ecosystem":"Maven","purl":"pkg:maven/org.springframework.boot/spring-boot"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.11.RELEASE"}]}],"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","1.2.4.RELEASE","1.2.5.RELEASE","1.2.6.RELEASE","1.2.7.RELEASE","1.2.8.RELEASE","1.3.0.RELEASE","1.3.1.RELEASE","1.3.2.RELEASE","1.3.3.RELEASE","1.3.4.RELEASE","1.3.5.RELEASE","1.3.6.RELEASE","1.3.7.RELEASE","1.3.8.RELEASE","1.4.0.RELEASE","1.4.1.RELEASE","1.4.2.RELEASE","1.4.3.RELEASE","1.4.4.RELEASE","1.4.5.RELEASE","1.4.6.RELEASE","1.4.7.RELEASE","1.5.0.RELEASE","1.5.1.RELEASE","1.5.10.RELEASE","1.5.11.RELEASE","1.5.12.RELEASE","1.5.13.RELEASE","1.5.14.RELEASE","1.5.15.RELEASE","1.5.16.RELEASE","1.5.17.RELEASE","1.5.18.RELEASE","1.5.19.RELEASE","1.5.2.RELEASE","1.5.20.RELEASE","1.5.21.RELEASE","1.5.22.RELEASE","1.5.3.RELEASE","1.5.4.RELEASE","1.5.5.RELEASE","1.5.6.RELEASE","1.5.7.RELEASE","1.5.8.RELEASE","1.5.9.RELEASE","2.0.0.RELEASE","2.0.1.RELEASE","2.0.2.RELEASE","2.0.3.RELEASE","2.0.4.RELEASE","2.0.5.RELEASE","2.0.6.RELEASE","2.0.7.RELEASE","2.0.8.RELEASE","2.0.9.RELEASE","2.1.0.RELEASE","2.1.1.RELEASE","2.1.10.RELEASE","2.1.11.RELEASE","2.1.12.RELEASE","2.1.13.RELEASE","2.1.14.RELEASE","2.1.15.RELEASE","2.1.16.RELEASE","2.1.17.RELEASE","2.1.18.RELEASE","2.1.2.RELEASE","2.1.3.RELEASE","2.1.4.RELEASE","2.1.5.RELEASE","2.1.6.RELEASE","2.1.7.RELEASE","2.1.8.RELEASE","2.1.9.RELEASE","2.2.0.RELEASE","2.2.1.RELEASE","2.2.10.RELEASE","2.2.2.RELEASE","2.2.3.RELEASE","2.2.4.RELEASE","2.2.5.RELEASE","2.2.6.RELEASE","2.2.7.RELEASE","2.2.8.RELEASE","2.2.9.RELEASE"],"database_specific":{"last_known_affected_version_range":"\u003c= 2.2.10.RELEASE","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/07/GHSA-cm59-pr5q-cw85/GHSA-cm59-pr5q-cw85.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"}]}