[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f8QC57uIu2aqKTFN-kSPu1B3c-AnuHRq7z9-RmnUIoKo":3,"g5a-risk:CVE-2018-18586":138},{"success":4,"data":5,"meta":136},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":38,"epssPercentile":15,"epssTimeSeries":39,"severity":40,"affectedProducts":41,"affectedProductsCount":35,"references":59,"referencesCount":80,"weaknesses":81,"weaknessesCount":90,"isActivelyExploited":91,"cisaInfo":15,"otxData":15,"relatedBlogPosts":92,"seoMetadata":93,"configurations":118,"relatedVendorCves":134,"notableEvents":135},"CVE-2018-18586","What is CVE-2018-18586?","chmextract.c in the chmextract sample program, as distributed with libmspack before 0.8alpha, does not protect against absolute\u002Frelative pathnames in CHM files, leading to Directory Traversal. NOTE: the vendor disputes that this is a libmspack vulnerability, because chmextract.c was only intended as a source-code example, not a supported application","chmextract.c in the chmextract sample program, as distributed with libmspack before 0.8alpha, does not protect against absolute\u002Frelative pathnames in CHM fil...","2018-10-23T02:29:00.7","2024-08-05T12:15:18.12",5.3,"CVSS:3.0\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:L\u002FI:N\u002FA:N",{"CVSSMetricV31":15,"CVSSMetricV30":16,"CVSSMetricV2":29,"CVSSMetricV40":15},null,[17],{"Source":18,"Type":19,"CVSSData":20,"ExploitabilityScore":27,"ImpactScore":28},"nvd@nist.gov","Primary",{"Version":21,"VectorString":13,"AttackVector":22,"AttackComplexity":23,"PrivilegesRequired":24,"UserInteraction":24,"Scope":25,"ConfidentialityImpact":23,"IntegrityImpact":24,"AvailabilityImpact":24,"BaseScore":12,"BaseSeverity":26,"ExploitCodeMaturity":15,"RemediationLevel":15,"ReportConfidence":15,"TemporalScore":15,"TemporalSeverity":15,"ConfidentialityRequirement":15,"IntegrityRequirement":15,"AvailabilityRequirement":15,"ModifiedAttackVector":15,"ModifiedAttackComplexity":15,"ModifiedPrivilegesRequired":15,"ModifiedUserInteraction":15,"ModifiedScope":15,"ModifiedConfidentialityImpact":15,"ModifiedIntegrityImpact":15,"ModifiedAvailabilityImpact":15,"EnvironmentalScore":15,"EnvironmentalSeverity":15},"3.0","NETWORK","LOW","NONE","UNCHANGED","MEDIUM",3.9,1.4,[30],{"Source":18,"Type":19,"CVSSData":31,"BaseSeverity":26,"ExploitabilityScore":36,"ImpactScore":37,"ACInsufInfo":15,"ObtainAllPrivilege":15,"ObtainUserPrivilege":15,"ObtainOtherPrivilege":15,"UserInteractionRequired":15},{"Version":32,"VectorString":33,"AccessVector":22,"AccessComplexity":23,"Authentication":24,"ConfidentialityImpact":34,"IntegrityImpact":24,"AvailabilityImpact":24,"BaseScore":35,"BaseSeverity":15,"Exploitability":15,"RemediationLevel":15,"ReportConfidence":15,"TemporalScore":15,"CollateralDamagePotential":15,"TargetDistribution":15,"ConfidentialityRequirement":15,"IntegrityRequirement":15,"AvailabilityRequirement":15,"EnvironmentalScore":15},"2.0","AV:N\u002FAC:L\u002FAu:N\u002FC:P\u002FI:N\u002FA:N","PARTIAL",5,10,2.9,0.03284,[38,38,38,38,38,38,38],"Medium",[42,47,50,53,56],{"vendor":43,"product":44,"version":45,"criteria":46,"vulnerable":4},"kyzer","libmspack","0.3","cpe:2.3:a:kyzer:libmspack:0.3:alpha:*:*:*:*:*:*",{"vendor":43,"product":44,"version":48,"criteria":49,"vulnerable":4},"0.4","cpe:2.3:a:kyzer:libmspack:0.4:alpha:*:*:*:*:*:*",{"vendor":43,"product":44,"version":51,"criteria":52,"vulnerable":4},"0.5","cpe:2.3:a:kyzer:libmspack:0.5:alpha:*:*:*:*:*:*",{"vendor":43,"product":44,"version":54,"criteria":55,"vulnerable":4},"0.6","cpe:2.3:a:kyzer:libmspack:0.6:alpha:*:*:*:*:*:*",{"vendor":43,"product":44,"version":57,"criteria":58,"vulnerable":4},"0.7","cpe:2.3:a:kyzer:libmspack:0.7:alpha:*:*:*:*:*:*",[60,66,72,76],{"url":61,"source":62,"tags":63},"https:\u002F\u002Fbugs.debian.org\u002F911639","Debian",[64,65],"Mailing List","Third Party Advisory",{"url":67,"source":68,"tags":69},"https:\u002F\u002Fgithub.com\u002Fkyz\u002Flibmspack\u002Fcommit\u002F7cadd489698be117c47efcadd742651594429e6d","GitHub",[70,71],"Exploit","Vendor Advisory",{"url":73,"source":74,"tags":75},"https:\u002F\u002Fsecurity.gentoo.org\u002Fglsa\u002F201903-20","Gentoo",[65],{"url":77,"source":78,"tags":79},"https:\u002F\u002Fwww.openwall.com\u002Flists\u002Foss-security\u002F2018\u002F10\u002F22\u002F1","Openwall",[64,65],4,[82],{"id":83,"name":84,"description":85,"extendedDescription":86,"status":87,"abstraction":88,"structure":89},"CWE-22","Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.","Many file operations are intended to take place within a restricted directory. By using special elements such as \"..\" and \"\u002F\" separators, attackers can escape outside of the restricted location to access files or directories that are elsewhere on the system. One of the most common special elements is the \"..\u002F\" sequence, which in most modern operating systems is interpreted as the parent directory of the current location. This is referred to as relative path traversal. Path traversal also covers the use of absolute pathnames such as \"\u002Fusr\u002Flocal\u002Fbin\" to access unexpected files. This is referred to as absolute path traversal.","Stable","Base","Simple",1,false,[],{"title":94,"metaDescription":95,"keywords":96,"canonicalUrl":97,"structuredData":98},"What is CVE-2018-18586? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2018-18586, a medium severity cyber security vulnerability from 2018. chmextract.c in the chmextract sample program, as distrib...","CVE-2018-18586, CVE-2018-18586 vulnerability, CVE-2018-18586 security, medium severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2018, CVSS score, exploit, patch, remediation, kyzer security, libmspack vulnerability","\u002Fwhat-is\u002Fcve-2018-18586",{"@context":99,"@type":100,"headline":94,"description":95,"datePublished":10,"dateModified":11,"author":101,"publisher":105,"about":109,"mainEntityOfPage":113,"articleSection":116,"keywords":117},"https:\u002F\u002Fschema.org","TechArticle",{"@type":102,"name":103,"url":104},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":102,"name":103,"url":104,"logo":106},{"@type":107,"url":108},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":110,"name":6,"description":111,"additionalType":112},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":114,"@id":115},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2018-18586","Cybersecurity","CVE-2018-18586, CVE-2018-18586 vulnerability, CVE-2018-18586 security, medium severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[119],{"Operator":15,"Negate":15,"Nodes":120},[121],{"Operator":122,"Negate":15,"CPEMatch":123},"OR",[124,126,128,130,132],{"Vulnerable":4,"Criteria":46,"MatchCriteriaID":125,"VersionStartExcluding":15,"VersionStartIncluding":15,"VersionEndExcluding":15,"VersionEndIncluding":15},"A8922C30-64ED-4C15-999E-58AB0812814C",{"Vulnerable":4,"Criteria":49,"MatchCriteriaID":127,"VersionStartExcluding":15,"VersionStartIncluding":15,"VersionEndExcluding":15,"VersionEndIncluding":15},"979ED5F0-4DE8-4091-BFD5-CD98AFF2BB43",{"Vulnerable":4,"Criteria":52,"MatchCriteriaID":129,"VersionStartExcluding":15,"VersionStartIncluding":15,"VersionEndExcluding":15,"VersionEndIncluding":15},"F9DBC30C-9FC0-4471-B63B-0E948E2569C6",{"Vulnerable":4,"Criteria":55,"MatchCriteriaID":131,"VersionStartExcluding":15,"VersionStartIncluding":15,"VersionEndExcluding":15,"VersionEndIncluding":15},"880442E9-7E36-4A6E-AA77-2310750AE21E",{"Vulnerable":4,"Criteria":58,"MatchCriteriaID":133,"VersionStartExcluding":15,"VersionStartIncluding":15,"VersionEndExcluding":15,"VersionEndIncluding":15},"BE5A7D47-85EC-4045-9FB4-369CCD4044B2",[],[],{"lastModified":11,"cacheTime":137,"version":32},1792367724179,{"score":139,"band":40,"action":140,"scoredAt":141},43,"Plan remediation","2026-10-16T06:45:04.870101+00:00"]