{"schemaVersion":3,"id":"CVE-2008-0555","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"The ExpandCert function in Apache-SSL before apache_1.3.41+ssl_1.59 does not properly handle (1) '/' and (2) '=' characters in a Distinguished Name (DN) in a client certificate, which might allow remote attackers to bypass authentication via a crafted DN that triggers overwriting of environment variables.","dates":{"published":"2008-04-04T00:00:00.000Z","modified":"2024-08-07T07:46:54.867Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"2.0","versionLabel":"v2.0","source":"NVD","vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","computed":false,"selection":"backend-summary"},"metrics":[{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":7.5,"severity":"high","vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.0187,"percentile":0.79002,"severity":"low","asOf":"2026-10-18T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-18T00:00:00.000Z","baselineScore":0.0187},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0187,"percentile":0.79002}],"last30":[{"date":"2026-09-18T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0187,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0187,"percentile":0.79002}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[{"id":"REF_81275A7824F70A28","name":"Exploit Reference (cynops.de)","source":"reference","url":"http://www.cynops.de/advisories/CVE-2008-0555.txt","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null},{"id":"REF_0C08DDBF105CAE61","name":"Exploit Reference (apache-ssl.org)","source":"reference","url":"http://www.apache-ssl.org/advisory-cve-2008-0555.txt","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null},{"id":"REF_B8A93C3665D588AE","name":"Exploit Reference (klink.name)","source":"reference","url":"http://www.klink.name/security/aklink-sa-2008-005-apache-ssl.txt","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":3,"weaknesses":[{"id":"CWE-20","name":"Improper Input Validation","description":"The product receives input or data, but it does\n        not validate or incorrectly validates that the input has the\n        properties that are required to process the data safely and\n        correctly.","type":"weakness","status":"Stable","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/20.html"},{"id":"CWE-287","name":"Improper Authentication","description":"When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/287.html"}],"affected":[{"vendor":"apache-ssl","product":"apache-ssl","name":"apache-ssl","label":"apache-ssl","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"1.3.34_1.57","noFixRecorded":false,"fixedIn":null}],"versionsText":"1.3.34_1.57","eol":null,"hubHref":"/vendor/apache-ssl/apache-ssl"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"http://securityreason.com/securityalert/3797","label":"securityreason.com/securityalert/3797","hostname":"securityreason.com","tags":["Third Party Advisory","X Refsource SREASON"]},{"url":"http://www.cynops.de/advisories/CVE-2008-0555.txt","label":"www.cynops.de/advisories/CVE-2008-0555.txt","hostname":"www.cynops.de","tags":["X Refsource MISC","Exploit"]},{"url":"http://www.vupen.com/english/advisories/2008/1079/references","label":"www.vupen.com/english/advisories/2008/1079/references","hostname":"www.vupen.com","tags":["VDB Entry","X Refsource VUPEN"]},{"url":"http://www.apache-ssl.org/advisory-cve-2008-0555.txt","label":"www.apache-ssl.org/advisory-cve-2008-0555.txt","hostname":"www.apache-ssl.org","tags":["X Refsource MISC","Exploit"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/41618","label":"exchange.xforce.ibmcloud.com/vulnerabilities/41618","hostname":"exchange.xforce.ibmcloud.com","tags":["VDB Entry","X Refsource XF"]},{"url":"http://www.securityfocus.com/bid/28576","label":"www.securityfocus.com/bid/28576","hostname":"www.securityfocus.com","tags":["VDB Entry","X Refsource BID","Patch"]},{"url":"http://www.klink.name/security/aklink-sa-2008-005-apache-ssl.txt","label":"www.klink.name/security/aklink-sa-2008-005-apache-ssl.txt","hostname":"www.klink.name","tags":["X Refsource MISC","Exploit"]},{"url":"http://secunia.com/advisories/29644","label":"secunia.com/advisories/29644","hostname":"secunia.com","tags":["Third Party Advisory","X Refsource SECUNIA","Vendor Advisory"]},{"url":"http://www.securitytracker.com/id?1019784","label":"www.securitytracker.com/id?1019784","hostname":"www.securitytracker.com","tags":["VDB Entry","X Refsource SECTRACK"]},{"url":"http://www.securityfocus.com/archive/1/490386/100/0/threaded","label":"www.securityfocus.com/archive/1/490386/100/0/threaded","hostname":"www.securityfocus.com","tags":["Mailing List","X Refsource BUGTRAQ"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2008-04-04T00:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-07T07:46:54.867Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":40,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T13:41:26.461Z","stale":false,"partial":false}}