{"id":"CVE-2023-43496","aliases":["BIT-jenkins-2023-43496","EUVD-2023-2426","GHSA-55wp-3pq4-w8p9"],"status":"published","title":"Jenkins temporary plugin file created with insecure permissions","description":"Jenkins 2.423 and earlier, LTS 2.414.1 and earlier creates a temporary file in the system temporary directory with the default permissions for newly created files when installing a plugin from a URL, potentially allowing attackers with access to the system temporary directory to replace the file before it is installed in Jenkins, potentially resulting in arbitrary code execution.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.01042,"percentile":0.64493,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-276"],"published":"2023-09-20T16:06:10Z","modified":"2026-10-24T10:30:24Z","fixes":[{"ecosystem":"Maven","package":"org.jenkins-ci.main:jenkins-core","fixed_in":["2.414.2","2.424"],"sources":["ghsa","osv"]},{"ecosystem":"Bitnami","package":"jenkins","fixed_in":["2.424.0"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.jenkins-ci.main:jenkins-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.50"},{"fixed":"2.414.2"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.jenkins-ci.main:jenkins-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.415"},{"fixed":"2.424"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"jenkins","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.424.0"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.jenkins-ci.main:jenkins-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.50"},{"fixed":"2.414.2"}]}],"versions":["2.100","2.101","2.102","2.103","2.104","2.105","2.106","2.107","2.107.1","2.107.2","2.107.3","2.108","2.109","2.110","2.111","2.112","2.113","2.114","2.115","2.116","2.117","2.118","2.119","2.120","2.121","2.121.1","2.121.2","2.121.3","2.122","2.123","2.124","2.125","2.126","2.127","2.128","2.129","2.130","2.131","2.132","2.133","2.134","2.135","2.136","2.137","2.138","2.138.1","2.138.2","2.138.3","2.138.4","2.140","2.141","2.142","2.143","2.144","2.145","2.146","2.147","2.148","2.149","2.150","2.150.1","2.150.2","2.150.3","2.151","2.152","2.153","2.154","2.155","2.156","2.157","2.158","2.159","2.160","2.161","2.162","2.163","2.164","2.164.1","2.164.2","2.164.3","2.165","2.166","2.167","2.168","2.169","2.170","2.171","2.172","2.173","2.174","2.175","2.176","2.176.1","2.176.2","2.176.3","2.176.4","2.177","2.178","2.179","2.180","2.181","2.182","2.183","2.184","2.185","2.186","2.187","2.189","2.190","2.190.1","2.190.2","2.190.3","2.191","2.192","2.193","2.194","2.195","2.196","2.197","2.198","2.199","2.200","2.201","2.202","2.203","2.204","2.204.1","2.204.2","2.204.3","2.204.4","2.204.5","2.204.6","2.205","2.206","2.207","2.208","2.209","2.210","2.211","2.212","2.213","2.214","2.215","2.216","2.217","2.218","2.219","2.220","2.221","2.222","2.222.1","2.222.3","2.222.4","2.223","2.224","2.225","2.226","2.227","2.228","2.229","2.230","2.231","2.232","2.233","2.234","2.235","2.235.1","2.235.2","2.235.3","2.235.4","2.235.5","2.236","2.237","2.238","2.239","2.240","2.241","2.242","2.243","2.244","2.245","2.246","2.247","2.248","2.249","2.249.1","2.249.2","2.249.3","2.250","2.251","2.252","2.253","2.254","2.255","2.256","2.257","2.258","2.259","2.260","2.261","2.262","2.263","2.263.1","2.263.2","2.263.3","2.263.4","2.264","2.265","2.266","2.267","2.268","2.269","2.270","2.271","2.272","2.273","2.274","2.275","2.276","2.277","2.277.1","2.277.2","2.277.3","2.277.4","2.278","2.279","2.280","2.281","2.282","2.283","2.284","2.285","2.286","2.287","2.288","2.289","2.289.1","2.289.2","2.289.3","2.290","2.291","2.292","2.293","2.294","2.295","2.296","2.297","2.298","2.299","2.300","2.301","2.302","2.303","2.303.1","2.303.2","2.303.3","2.304","2.305","2.306","2.307","2.308","2.309","2.311","2.312","2.313","2.314","2.315","2.316","2.317","2.318","2.319","2.319.1","2.319.2","2.319.3","2.320","2.321","2.322","2.323","2.324","2.325","2.326","2.327","2.328","2.329","2.330","2.331","2.332","2.332.1","2.332.2","2.332.3","2.332.4","2.333","2.334","2.335","2.336","2.337","2.338","2.339","2.340","2.341","2.342","2.343","2.344","2.345","2.346","2.346.1","2.346.2","2.346.3","2.347","2.348","2.349","2.350","2.354","2.355","2.356","2.357","2.358","2.359","2.360","2.361","2.361.1","2.361.2","2.361.3","2.361.4","2.362","2.363","2.364","2.365","2.366","2.367","2.368","2.369","2.370","2.371","2.372","2.373","2.374","2.375","2.375.1","2.375.2","2.375.3","2.375.4","2.376","2.377","2.378","2.379","2.380","2.381","2.382","2.383","2.384","2.385","2.386","2.387","2.387.1","2.387.2","2.387.3","2.388","2.389","2.390","2.391","2.392","2.393","2.394","2.395","2.396","2.397","2.398","2.399","2.400","2.401","2.401.1","2.401.2","2.401.3","2.402","2.403","2.404","2.405","2.406","2.407","2.409","2.410","2.411","2.412","2.413","2.414","2.414.1","2.50","2.51","2.52","2.53","2.54","2.55","2.56","2.57","2.58","2.59","2.60","2.60.1","2.60.2","2.60.3","2.61","2.62","2.63","2.64","2.65","2.66","2.67","2.68","2.69","2.70","2.71","2.72","2.73","2.73.1","2.73.2","2.73.3","2.74","2.75","2.76","2.77","2.78","2.79","2.80","2.81","2.82","2.83","2.84","2.85","2.86","2.87","2.88","2.89","2.89.1","2.89.2","2.89.3","2.89.4","2.90","2.91","2.92","2.93","2.94","2.95","2.96","2.97","2.98","2.99"]},{"source":"osv","ecosystem":"Maven","package":"org.jenkins-ci.main:jenkins-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.415"},{"fixed":"2.424"}]}],"versions":["2.415","2.416","2.417","2.418","2.419","2.420","2.421","2.422","2.423"]}],"products":[{"vendor":"jenkins","product":"jenkins"},{"vendor":"jenkins project","product":"jenkins"}],"references":[{"url":"https://www.jenkins.io/security/advisory/2023-09-20/#SECURITY-3072","tags":["vendor-advisory","x_transferred","Vendor Advisory","advisory","web"]},{"url":"http://www.openwall.com/lists/oss-security/2023/09/20/5","tags":["x_transferred","Mailing List","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-43496","tags":["web","advisory"]},{"url":"https://github.com/jenkinsci/jenkins/commit/df7c4ccda8976c06bf31b8fb9938f26fc38501ca","tags":["web"]},{"url":"https://github.com/advisories/GHSA-55wp-3pq4-w8p9"}],"sources":{"cve":[{"id":"CVE-2023-43496","description":"Jenkins 2.423 and earlier, LTS 2.414.1 and earlier creates a temporary file in the system temporary directory with the default permissions for newly created files when installing a plugin from a URL, potentially allowing attackers with access to the system temporary directory to replace the file before it is installed in Jenkins, potentially resulting in arbitrary code execution.","status":"published","published":"2023-09-20T16:06:10.098Z","modified":"2025-05-02T15:32:45.011Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-276"],"updated_at":"2026-11-02T14:35:14.633899Z"}],"euvd":[{"id":"EUVD-2023-2426","description":"Jenkins 2.423 and earlier, LTS 2.414.1 and earlier creates a temporary file in the system temporary directory with the default permissions for newly created files when installing a plugin from a URL, potentially allowing attackers with access to the system temporary directory to replace the file before it is installed in Jenkins, potentially resulting in arbitrary code execution.","status":"published","published":"2023-09-20T16:06:10Z","modified":"2025-05-02T15:32:45Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T20:51:55.85045Z"}],"ghsa":[{"id":"GHSA-55wp-3pq4-w8p9","title":"Jenkins temporary plugin file created with insecure permissions ","description":"Jenkins creates a temporary file when a plugin is deployed directly from a URL.\n\nJenkins 2.423 and earlier, LTS 2.414.1 and earlier creates this temporary file in the system temporary directory with the default permissions for newly created files.\n\nIf these permissions are overly permissive, they may allow attackers with access to the Jenkins controller file system to read and write the file before it is installed in Jenkins, potentially resulting in arbitrary code execution.\n\nThis vulnerability only affects operating systems using a shared temporary directory for all users (typically Linux). Additionally, the default permissions for newly created files generally only allow attackers to read the temporary file, but not write to it.\n\nThis issue complements SECURITY-2823, which affected plugins uploaded from an administrator’s computer.\nJenkins 2.424, LTS 2.414.2 creates the temporary file in a subdirectory with more restrictive permissions.\n\nAs a workaround, you can change your default temporary-file directory using the Java system property java.io.tmpdir, if you’re concerned about this issue but unable to immediately update Jenkins.","status":"published","published":"2023-09-20T18:30:21Z","modified":"2024-01-04T12:13:06Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-276"],"updated_at":"2026-11-02T14:37:29.411214Z"}],"nvd":[{"id":"CVE-2023-43496","description":"Jenkins 2.423 and earlier, LTS 2.414.1 and earlier creates a temporary file in the system temporary directory with the default permissions for newly created files when installing a plugin from a URL, potentially allowing attackers with access to the system temporary directory to replace the file before it is installed in Jenkins, potentially resulting in arbitrary code execution.","status":"published","published":"2023-09-20T17:15:11.82Z","modified":"2026-06-17T06:25:36.133Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-276"],"updated_at":"2026-11-02T14:08:29.595868Z"}],"osv":[{"id":"CVE-2023-43496","description":"Jenkins 2.423 and earlier, LTS 2.414.1 and earlier creates a temporary file in the system temporary directory with the default permissions for newly created files when installing a plugin from a URL, potentially allowing attackers with access to the system temporary directory to replace the file before it is installed in Jenkins, potentially resulting in arbitrary code execution.","status":"published","published":"2023-09-20T17:15:11.82Z","modified":"2026-10-24T10:30:24.128938145Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:33.792101Z"},{"id":"GHSA-55wp-3pq4-w8p9","title":"Jenkins temporary plugin file created with insecure permissions ","description":"Jenkins creates a temporary file when a plugin is deployed directly from a URL.\n\nJenkins 2.423 and earlier, LTS 2.414.1 and earlier creates this temporary file in the system temporary directory with the default permissions for newly created files.\n\nIf these permissions are overly permissive, they may allow attackers with access to the Jenkins controller file system to read and write the file before it is installed in Jenkins, potentially resulting in arbitrary code execution.\n\nThis vulnerability only affects operating systems using a shared temporary directory for all users (typically Linux). Additionally, the default permissions for newly created files generally only allow attackers to read the temporary file, but not write to it.\n\nThis issue complements SECURITY-2823, which affected plugins uploaded from an administrator’s computer.\nJenkins 2.424, LTS 2.414.2 creates the temporary file in a subdirectory with more restrictive permissions.\n\nAs a workaround, you can change your default temporary-file directory using the Java system property java.io.tmpdir, if you’re concerned about this issue but unable to immediately update Jenkins.","status":"published","published":"2023-09-20T18:30:21Z","modified":"2025-05-02T19:25:53.525329Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-276"],"updated_at":"2026-11-02T15:46:37.864461Z"},{"id":"BIT-jenkins-2023-43496","description":"Jenkins LTS 2.414.1 and earlier creates a temporary file in the system temporary directory with the default permissions for newly created files when installing a plugin from a URL, potentially allowing attackers with access to the system temporary directory to replace the file before it is installed in Jenkins, potentially resulting in arbitrary code execution.","status":"published","published":"2024-03-06T10:54:39.081Z","modified":"2026-09-08T08:47:58.015510861Z","updated_at":"2026-11-02T15:28:31.42203Z"}]}}