{"api_version":"1","generated_at":"2026-07-23T00:53:00+00:00","cve":"CVE-2002-1850","urls":{"html":"https://cve.report/CVE-2002-1850","api":"https://cve.report/api/cve/CVE-2002-1850.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2002-1850","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2002-1850"},"summary":{"title":"CVE-2002-1850","description":"mod_cgi in Apache 2.0.39 and 2.0.40 allows local users and possibly remote attackers to cause a denial of service (hang and memory consumption) by causing a CGI script to send a large amount of data to stderr, which results in a read/write deadlock between httpd and the CGI script.","state":"PUBLISHED","assigner":"mitre","published_at":"2002-12-31 05:00:00","updated_at":"2025-04-03 01:03:51"},"problem_types":["CWE-667","n/a"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"7.5","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}},{"version":"2.0","source":"nvd@nist.gov","type":"Primary","score":"5","severity":"","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","data":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P","baseScore":5,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL"}}],"references":[{"url":"http://www.iss.net/security_center/static/10200.php","name":"http://www.iss.net/security_center/static/10200.php","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Broken Link","Patch"],"title":"ISS X-Force Database: apache-stderr-dos (10200): Apache HTTP Server stderr denial of service","mime":"text/html","httpstatus":"-1","archivestatus":"200"},{"url":"http://www.securityfocus.com/bid/8725","name":"http://www.securityfocus.com/bid/8725","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Broken Link","Patch","Third Party Advisory","VDB Entry"],"title":"Apache2 MOD_CGI STDERR Denial Of Service Vulnerability","mime":"text/html","httpstatus":"200","archivestatus":"0"},{"url":"http://cvs.apache.org/viewcvs.cgi/httpd-2.0/modules/generators/mod_cgi.c?r1=1.148.2.7&r2=1.148.2.8","name":"http://cvs.apache.org/viewcvs.cgi/httpd-2.0/modules/generators/mod_cgi.c?r1=1.148.2.7&r2=1.148.2.8","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Broken Link"],"title":"404 Not Found","mime":"text/html","httpstatus":"404","archivestatus":"404"},{"url":"http://www.securityfocus.com/bid/5787","name":"http://www.securityfocus.com/bid/5787","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Broken Link","Exploit","Third Party Advisory","VDB Entry"],"title":"Apache Oversized STDERR Buffer Denial Of Service Vulnerability","mime":"text/html","httpstatus":"200","archivestatus":"0"},{"url":"http://marc.info/?l=apache-httpd-dev&m=103291952019514&w=2","name":"http://marc.info/?l=apache-httpd-dev&m=103291952019514&w=2","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List"],"title":"'CGI bucket needed' - MARC","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://issues.apache.org/bugzilla/show_bug.cgi?id=22030","name":"http://issues.apache.org/bugzilla/show_bug.cgi?id=22030","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking","Patch"],"title":"22030 – 4097+ bytes of stderr from cgi script causes script to hang","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://issues.apache.org/bugzilla/show_bug.cgi?id=10515","name":"http://issues.apache.org/bugzilla/show_bug.cgi?id=10515","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking"],"title":"Bug 10515 - cgi lock when writing to stderr","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://seclists.org/bugtraq/2002/Sep/0253.html","name":"http://seclists.org/bugtraq/2002/Sep/0253.html","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Mailing List","Third Party Advisory"],"title":"Bugtraq: Apache 2.0.(39|40) DOS (PHP!)","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://securitytracker.com/id?1007823","name":"http://securitytracker.com/id?1007823","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Broken Link","Patch","Third Party Advisory","VDB Entry"],"title":"Apache Web Server mod_cgi Error May Let Malicious CGI Scripts Crash the Web Service - SecurityTracker","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2002-1850","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2002-1850","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"n/a","product":"n/a","version":"affected n/a","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2002","cve_id":"1850","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"apache","cpe5":"http_server","cpe6":"2.0.39","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2002","cve_id":"1850","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"apache","cpe5":"http_server","cpe6":"2.0.40","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[{"cvename":"CVE-2002-1850","organization":"Red Hat","lastmodified":"2006-08-30","contributor":"Mark J Cox","statementText":"Not vulnerable. This issue did not affect the versions of Apache HTTP server as shipped with Red Hat Enterprise Linux 2.1, 3, or 4.","cve_year":"2002","cve_id":"1850","crc32":"8911a518"}],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"providerMetadata":{"dateUpdated":"2024-08-08T03:43:32.800Z","orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE"},"references":[{"name":"1007823","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"],"url":"http://securitytracker.com/id?1007823"},{"name":"20020923 Apache 2.0.(39|40) DOS (PHP!)","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"],"url":"http://seclists.org/bugtraq/2002/Sep/0253.html"},{"tags":["x_refsource_CONFIRM","x_transferred"],"url":"http://cvs.apache.org/viewcvs.cgi/httpd-2.0/modules/generators/mod_cgi.c?r1=1.148.2.7&r2=1.148.2.8"},{"name":"8725","tags":["vdb-entry","x_refsource_BID","x_transferred"],"url":"http://www.securityfocus.com/bid/8725"},{"tags":["x_refsource_MISC","x_transferred"],"url":"http://issues.apache.org/bugzilla/show_bug.cgi?id=10515"},{"name":"apache-stderr-dos(10200)","tags":["vdb-entry","x_refsource_XF","x_transferred"],"url":"http://www.iss.net/security_center/static/10200.php"},{"name":"5787","tags":["vdb-entry","x_refsource_BID","x_transferred"],"url":"http://www.securityfocus.com/bid/5787"},{"name":"[apache-httpd-dev] 20020925 CGI bucket needed","tags":["mailing-list","x_refsource_MLIST","x_transferred"],"url":"http://marc.info/?l=apache-httpd-dev&m=103291952019514&w=2"},{"tags":["x_refsource_MISC","x_transferred"],"url":"http://issues.apache.org/bugzilla/show_bug.cgi?id=22030"}],"title":"CVE Program Container"}],"cna":{"affected":[{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}],"datePublic":"2002-09-23T00:00:00.000Z","descriptions":[{"lang":"en","value":"mod_cgi in Apache 2.0.39 and 2.0.40 allows local users and possibly remote attackers to cause a denial of service (hang and memory consumption) by causing a CGI script to send a large amount of data to stderr, which results in a read/write deadlock between httpd and the CGI script."}],"problemTypes":[{"descriptions":[{"description":"n/a","lang":"en","type":"text"}]}],"providerMetadata":{"dateUpdated":"2016-10-17T13:57:01.000Z","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","shortName":"mitre"},"references":[{"name":"1007823","tags":["vdb-entry","x_refsource_SECTRACK"],"url":"http://securitytracker.com/id?1007823"},{"name":"20020923 Apache 2.0.(39|40) DOS (PHP!)","tags":["mailing-list","x_refsource_BUGTRAQ"],"url":"http://seclists.org/bugtraq/2002/Sep/0253.html"},{"tags":["x_refsource_CONFIRM"],"url":"http://cvs.apache.org/viewcvs.cgi/httpd-2.0/modules/generators/mod_cgi.c?r1=1.148.2.7&r2=1.148.2.8"},{"name":"8725","tags":["vdb-entry","x_refsource_BID"],"url":"http://www.securityfocus.com/bid/8725"},{"tags":["x_refsource_MISC"],"url":"http://issues.apache.org/bugzilla/show_bug.cgi?id=10515"},{"name":"apache-stderr-dos(10200)","tags":["vdb-entry","x_refsource_XF"],"url":"http://www.iss.net/security_center/static/10200.php"},{"name":"5787","tags":["vdb-entry","x_refsource_BID"],"url":"http://www.securityfocus.com/bid/5787"},{"name":"[apache-httpd-dev] 20020925 CGI bucket needed","tags":["mailing-list","x_refsource_MLIST"],"url":"http://marc.info/?l=apache-httpd-dev&m=103291952019514&w=2"},{"tags":["x_refsource_MISC"],"url":"http://issues.apache.org/bugzilla/show_bug.cgi?id=22030"}],"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2002-1850","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"mod_cgi in Apache 2.0.39 and 2.0.40 allows local users and possibly remote attackers to cause a denial of service (hang and memory consumption) by causing a CGI script to send a large amount of data to stderr, which results in a read/write deadlock between httpd and the CGI script."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"name":"1007823","refsource":"SECTRACK","url":"http://securitytracker.com/id?1007823"},{"name":"20020923 Apache 2.0.(39|40) DOS (PHP!)","refsource":"BUGTRAQ","url":"http://seclists.org/bugtraq/2002/Sep/0253.html"},{"name":"http://cvs.apache.org/viewcvs.cgi/httpd-2.0/modules/generators/mod_cgi.c?r1=1.148.2.7&r2=1.148.2.8","refsource":"CONFIRM","url":"http://cvs.apache.org/viewcvs.cgi/httpd-2.0/modules/generators/mod_cgi.c?r1=1.148.2.7&r2=1.148.2.8"},{"name":"8725","refsource":"BID","url":"http://www.securityfocus.com/bid/8725"},{"name":"http://issues.apache.org/bugzilla/show_bug.cgi?id=10515","refsource":"MISC","url":"http://issues.apache.org/bugzilla/show_bug.cgi?id=10515"},{"name":"apache-stderr-dos(10200)","refsource":"XF","url":"http://www.iss.net/security_center/static/10200.php"},{"name":"5787","refsource":"BID","url":"http://www.securityfocus.com/bid/5787"},{"name":"[apache-httpd-dev] 20020925 CGI bucket needed","refsource":"MLIST","url":"http://marc.info/?l=apache-httpd-dev&m=103291952019514&w=2"},{"name":"http://issues.apache.org/bugzilla/show_bug.cgi?id=22030","refsource":"MISC","url":"http://issues.apache.org/bugzilla/show_bug.cgi?id=22030"}]}}}},"cveMetadata":{"assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","assignerShortName":"mitre","cveId":"CVE-2002-1850","datePublished":"2005-06-28T04:00:00.000Z","dateReserved":"2005-06-29T00:00:00.000Z","dateUpdated":"2024-08-08T03:43:32.800Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"},"nvd":{"publishedDate":"2002-12-31 05:00:00","lastModifiedDate":"2025-04-03 01:03:51","problem_types":["CWE-667","n/a"],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P","baseScore":5,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":10,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:apache:http_server:2.0.39:*:*:*:*:*:*:*","matchCriteriaId":"1C7FF669-12E0-4A73-BBA7-250D109148C5"},{"vulnerable":true,"criteria":"cpe:2.3:a:apache:http_server:2.0.40:*:*:*:*:*:*:*","matchCriteriaId":"5AB7B1F1-7202-445D-9F96-135DC0AFB1E9"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2002","CveId":"1850","Ordinal":"1","Title":"CVE-2002-1850","CVE":"CVE-2002-1850","Year":"2002"},"notes":[{"CveYear":"2002","CveId":"1850","Ordinal":"1","NoteData":"mod_cgi in Apache 2.0.39 and 2.0.40 allows local users and possibly remote attackers to cause a denial of service (hang and memory consumption) by causing a CGI script to send a large amount of data to stderr, which results in a read/write deadlock between httpd and the CGI script.","Type":"Description","Title":"CVE-2002-1850"},{"CveYear":"2002","CveId":"1850","Ordinal":"2","NoteData":"2005-06-28","Type":"Other","Title":"Published"},{"CveYear":"2002","CveId":"1850","Ordinal":"3","NoteData":"2016-10-17","Type":"Other","Title":"Modified"}]}}}