[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$foT20sdDLoJxWd_8iWW8nJQfzPFZLBn8dpbZ_L0aaBSU":3,"g5a-risk:CVE-2023-28840":159},{"success":4,"data":5,"meta":156},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":36,"epssPercentile":25,"epssTimeSeries":37,"severity":38,"affectedProducts":39,"affectedProductsCount":45,"references":46,"referencesCount":86,"weaknesses":87,"weaknessesCount":112,"isActivelyExploited":113,"cisaInfo":25,"otxData":25,"relatedBlogPosts":114,"seoMetadata":115,"configurations":140,"relatedVendorCves":154,"notableEvents":155},"CVE-2023-28840","What is CVE-2023-28840?","Moby is an open source container framework developed by Docker Inc. that is distributed as Docker, Mirantis Container Runtime, and various other downstream projects\u002Fproducts. The Moby daemon component (`dockerd`), which is developed as moby\u002Fmoby, is commonly referred to as *Docker*.\n\nSwarm Mode, which is compiled in and delivered by default in dockerd and is thus present in most major Moby downstreams, is a simple, built-in container orchestrator that is implemented through a combination of SwarmKit and supporting network code.\n\nThe overlay network driver is a core feature of Swarm Mode, providing isolated virtual LANs that allow communication between containers and services across the cluster. This driver is an implementation\u002Fuser of VXLAN, which encapsulates link-layer (Ethernet) frames in UDP datagrams that tag the frame with a VXLAN Network ID (VNI) that identifies the originating overlay network. In addition, the overlay network driver supports an optional, off-by-default encrypted mode, which is especially useful when VXLAN packets traverses an untrusted network between nodes.\n\nEncrypted overlay networks function by encapsulating the VXLAN datagrams through the use of the IPsec Encapsulating Security Payload protocol in Transport mode. By deploying IPSec encapsulation, encrypted overlay networks gain the additional properties of source authentication through cryptographic proof, data integrity through check-summing, and confidentiality through encryption.\n\nWhen setting an endpoint up on an encrypted overlay network, Moby installs three iptables (Linux kernel firewall) rules that enforce both incoming and outgoing IPSec. These rules rely on the u32 iptables extension provided by the xt_u32 kernel module to directly filter on a VXLAN packet's VNI field, so that IPSec guarantees can be enforced on encrypted overlay networks without interfering with other overlay networks or other users of VXLAN.\n\nTwo iptables rules serve to filter incoming VXLAN datagrams with a VNI that corresponds to an encrypted network and discards unencrypted datagrams. The rules are appended to the end of the INPUT filter chain, following any rules that have been previously set by the system administrator. Administrator-set rules take precedence over the rules Moby sets to discard unencrypted VXLAN datagrams, which can potentially admit unencrypted datagrams that should have been discarded.\n\nThe injection of arbitrary Ethernet frames can enable a Denial of Service attack. A sophisticated attacker may be able to establish a UDP or TCP connection by way of the container’s outbound gateway that would otherwise be blocked by a stateful firewall, or carry out other escalations beyond simple injection by smuggling packets into the overlay network.\n\nPatches are available in Moby releases 23.0.3 and 20.10.24. As Mirantis Container Runtime's 20.10 releases are numbered differently, users of that platform should update to 20.10.16.\n\nSome workarounds are available. Close the VXLAN port (by default, UDP port 4789) to incoming traffic at the Internet boundary to prevent all VXLAN packet injection, and\u002For ensure that the `xt_u32` kernel module is available on all nodes of the Swarm cluster.","Moby is an open source container framework developed by Docker Inc. that is distributed as Docker, Mirantis Container Runtime, and various other downstream p...","2023-04-04T22:15:07.853","2023-09-15T21:15:10.15",8.7,"CVSS:3.1\u002FAV:N\u002FAC:H\u002FPR:N\u002FUI:N\u002FS:C\u002FC:N\u002FI:H\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":25,"CVSSMetricV2":25,"CVSSMetricV40":25},[16,28],{"Source":17,"Type":18,"CVSSData":19,"ExploitabilityScore":26,"ImpactScore":27},"nvd@nist.gov","Primary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":23,"IntegrityImpact":22,"AvailabilityImpact":22,"BaseScore":12,"BaseSeverity":22,"ExploitCodeMaturity":25,"RemediationLevel":25,"ReportConfidence":25,"TemporalScore":25,"TemporalSeverity":25,"ConfidentialityRequirement":25,"IntegrityRequirement":25,"AvailabilityRequirement":22,"ModifiedAttackVector":25,"ModifiedAttackComplexity":25,"ModifiedPrivilegesRequired":25,"ModifiedUserInteraction":25,"ModifiedScope":25,"ModifiedConfidentialityImpact":25,"ModifiedIntegrityImpact":25,"ModifiedAvailabilityImpact":25,"EnvironmentalScore":25,"EnvironmentalSeverity":25},"3.1","NETWORK","HIGH","NONE","CHANGED",null,2.2,5.8,{"Source":29,"Type":30,"CVSSData":31,"ExploitabilityScore":26,"ImpactScore":35},"security-advisories@github.com","Secondary",{"Version":20,"VectorString":32,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":22,"IntegrityImpact":23,"AvailabilityImpact":33,"BaseScore":34,"BaseSeverity":22,"ExploitCodeMaturity":25,"RemediationLevel":25,"ReportConfidence":25,"TemporalScore":25,"TemporalSeverity":25,"ConfidentialityRequirement":25,"IntegrityRequirement":25,"AvailabilityRequirement":33,"ModifiedAttackVector":25,"ModifiedAttackComplexity":25,"ModifiedPrivilegesRequired":25,"ModifiedUserInteraction":25,"ModifiedScope":25,"ModifiedConfidentialityImpact":25,"ModifiedIntegrityImpact":25,"ModifiedAvailabilityImpact":25,"EnvironmentalScore":25,"EnvironmentalSeverity":25},"CVSS:3.1\u002FAV:N\u002FAC:H\u002FPR:N\u002FUI:N\u002FS:C\u002FC:H\u002FI:N\u002FA:L","LOW",7.5,4.7,0.02559,[36,36,36,36,36,36,36],"High",[40],{"vendor":41,"product":42,"version":43,"criteria":44,"vulnerable":4},"mobyproject","moby","*","cpe:2.3:a:mobyproject:moby:*:*:*:*:*:*:*:*",1,[47,52,58,62,66,70,73,76,80,83],{"url":48,"source":49,"tags":50},"https:\u002F\u002Fgithub.com\u002Fmoby\u002Flibnetwork\u002Fsecurity\u002Fadvisories\u002FGHSA-gvm4-2qqg-m333","GitHub",[51],"Vendor Advisory",{"url":53,"source":49,"tags":54},"https:\u002F\u002Fgithub.com\u002Fmoby\u002Fmoby\u002Fissues\u002F43382",[55,56,57],"Exploit","Issue Tracking","Third Party Advisory",{"url":59,"source":49,"tags":60},"https:\u002F\u002Fgithub.com\u002Fmoby\u002Fmoby\u002Fpull\u002F45118",[56,61],"Patch",{"url":63,"source":49,"tags":64},"https:\u002F\u002Fgithub.com\u002Fmoby\u002Fmoby\u002Fsecurity\u002Fadvisories\u002FGHSA-232p-vwff-86mp",[65,51],"Mitigation",{"url":67,"source":49,"tags":68},"https:\u002F\u002Fgithub.com\u002Fmoby\u002Fmoby\u002Fsecurity\u002Fadvisories\u002FGHSA-33pg-m6jh-5237",[69],"Not Applicable",{"url":71,"source":49,"tags":72},"https:\u002F\u002Fgithub.com\u002Fmoby\u002Fmoby\u002Fsecurity\u002Fadvisories\u002FGHSA-6wrf-mxfj-pf5p",[69],{"url":74,"source":49,"tags":75},"https:\u002F\u002Fgithub.com\u002Fmoby\u002Fmoby\u002Fsecurity\u002Fadvisories\u002FGHSA-vwm3-crmr-xfxw",[51],{"url":77,"source":78,"tags":79},"https:\u002F\u002Flists.fedoraproject.org\u002Farchives\u002Flist\u002Fpackage-announce@lists.fedoraproject.org\u002Fmessage\u002FLYZOKMMVX4SIEHPJW3SJUQGMO5YZCPHC\u002F","Fedoraproject",[],{"url":81,"source":78,"tags":82},"https:\u002F\u002Flists.fedoraproject.org\u002Farchives\u002Flist\u002Fpackage-announce@lists.fedoraproject.org\u002Fmessage\u002FXNF4OLYZRQE75EB5TW5N42FSXHBXGWFE\u002F",[],{"url":84,"source":78,"tags":85},"https:\u002F\u002Flists.fedoraproject.org\u002Farchives\u002Flist\u002Fpackage-announce@lists.fedoraproject.org\u002Fmessage\u002FZTE4ITXXPIWZEQ4HYQCB6N6GZIMWXDAI\u002F",[],10,[88,96,102,108],{"id":89,"name":90,"description":91,"extendedDescription":92,"status":93,"abstraction":94,"structure":95},"CWE-203","Observable Discrepancy","The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.","Discrepancies can take many forms, and variations may be detectable in timing, control flow, communications such as replies or requests, or general behavior. These discrepancies can reveal information about the product's operation or internal state to an unauthorized actor. In some cases, discrepancies can be used by attackers to form a side channel.","Incomplete","Base","Simple",{"id":97,"name":98,"description":99,"extendedDescription":100,"status":101,"abstraction":94,"structure":95},"CWE-420","Unprotected Alternate Channel","The product protects a primary channel, but it does not use the same level of protection for an alternate channel.","","Draft",{"id":103,"name":104,"description":105,"extendedDescription":106,"status":101,"abstraction":107,"structure":95},"CWE-636","Not Failing Securely ('Failing Open')","When the product encounters an error condition or failure, its design requires it to fall back to a state that is less secure than other options that are available, such as selecting the weakest encryption algorithm or using the most permissive access control restrictions.","By entering a less secure state, the product inherits the weaknesses associated with that state, making it easier to compromise. At the least, it causes administrators to have a false sense of security. This weakness typically occurs as a result of wanting to \"fail functional\" to minimize administration and support costs, instead of \"failing safe.\"","Class",{"id":109,"name":110,"description":111,"extendedDescription":100,"status":93,"abstraction":107,"structure":95},"CWE-755","Improper Handling of Exceptional Conditions","The product does not handle or incorrectly handles an exceptional condition.",4,false,[],{"title":116,"metaDescription":117,"keywords":118,"canonicalUrl":119,"structuredData":120},"What is CVE-2023-28840? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2023-28840, a high severity cyber security vulnerability from 2023. Moby is an open source container framework developed by Doc...","CVE-2023-28840, CVE-2023-28840 vulnerability, CVE-2023-28840 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2023, CVSS score, exploit, patch, remediation, mobyproject security, moby vulnerability","\u002Fwhat-is\u002Fcve-2023-28840",{"@context":121,"@type":122,"headline":116,"description":117,"datePublished":10,"dateModified":11,"author":123,"publisher":127,"about":131,"mainEntityOfPage":135,"articleSection":138,"keywords":139},"https:\u002F\u002Fschema.org","TechArticle",{"@type":124,"name":125,"url":126},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":124,"name":125,"url":126,"logo":128},{"@type":129,"url":130},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":132,"name":6,"description":133,"additionalType":134},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":136,"@id":137},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2023-28840","Cybersecurity","CVE-2023-28840, CVE-2023-28840 vulnerability, CVE-2023-28840 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[141],{"Operator":25,"Negate":25,"Nodes":142},[143],{"Operator":144,"Negate":25,"CPEMatch":145},"OR",[146,150],{"Vulnerable":4,"Criteria":44,"MatchCriteriaID":147,"VersionStartExcluding":25,"VersionStartIncluding":148,"VersionEndExcluding":149,"VersionEndIncluding":25},"E7027BE5-D31C-40E5-81A4-A91028A687B3","1.12.0","20.10.24",{"Vulnerable":4,"Criteria":44,"MatchCriteriaID":151,"VersionStartExcluding":25,"VersionStartIncluding":152,"VersionEndExcluding":153,"VersionEndIncluding":25},"911C8E32-9EC6-4AAD-93CD-C1880D06E3AD","23.0.0","23.0.3",[],[],{"lastModified":11,"cacheTime":157,"version":158},1792265800918,"2.0",{"score":160,"band":161,"action":162,"scoredAt":163},56,"Medium","Plan remediation","2026-10-16T06:57:39.6486+00:00"]