[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$faOjTy7X02h5rNOOEeROo-5PDid1qIaxSPgd9sUqdO8I":3,"g5a-risk:CVE-2022-24903":189},{"success":4,"data":5,"meta":187},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":42,"epssPercentile":25,"epssTimeSeries":43,"severity":44,"affectedProducts":45,"affectedProductsCount":71,"references":72,"referencesCount":71,"weaknesses":98,"weaknessesCount":112,"isActivelyExploited":113,"cisaInfo":25,"otxData":25,"relatedBlogPosts":114,"seoMetadata":115,"configurations":140,"relatedVendorCves":171,"notableEvents":172},"CVE-2022-24903","What is CVE-2022-24903?","Rsyslog is a rocket-fast system for log processing. Modules for TCP syslog reception have a potential heap buffer overflow when octet-counted framing is used. This can result in a segfault or some other malfunction. As of our understanding, this vulnerability can not be used for remote code execution. But there may still be a slight chance for experts to do that. The bug occurs when the octet count is read. While there is a check for the maximum number of octets, digits are written to a heap buffer even when the octet count is over the maximum, This can be used to overrun the memory buffer. However, once the sequence of digits stop, no additional characters can be added to the buffer. In our opinion, this makes remote exploits impossible or at least highly complex. Octet-counted framing is one of two potential framing modes. It is relatively uncommon, but enabled by default on receivers. Modules `imtcp`, `imptcp`, `imgssapi`, and `imhttp` are used for regular syslog message reception. It is best practice not to directly expose them to the public. When this practice is followed, the risk is considerably lower. Module `imdiag` is a diagnostics module primarily intended for testbench runs. We do not expect it to be present on any production installation. Octet-counted framing is not very common. Usually, it needs to be specifically enabled at senders. If users do not need it, they can turn it off for the most important modules. This will mitigate the vulnerability.","Rsyslog is a rocket-fast system for log processing. Modules for TCP syslog reception have a potential heap buffer overflow when octet-counted framing is used...","2022-05-06T00:15:07.873","2023-11-07T03:44:40.95",8.1,"CVSS:3.1\u002FAV:N\u002FAC:H\u002FPR:N\u002FUI:N\u002FS:U\u002FC:H\u002FI:H\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":25,"CVSSMetricV2":32,"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":22,"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","UNCHANGED",null,2.2,5.9,{"Source":29,"Type":30,"CVSSData":31,"ExploitabilityScore":26,"ImpactScore":27},"a0819718-46f1-4df5-94e2-005712e83aaa","Secondary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":22,"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},[33],{"Source":17,"Type":18,"CVSSData":34,"BaseSeverity":37,"ExploitabilityScore":40,"ImpactScore":41,"ACInsufInfo":25,"ObtainAllPrivilege":25,"ObtainUserPrivilege":25,"ObtainOtherPrivilege":25,"UserInteractionRequired":25},{"Version":35,"VectorString":36,"AccessVector":21,"AccessComplexity":37,"Authentication":23,"ConfidentialityImpact":38,"IntegrityImpact":38,"AvailabilityImpact":38,"BaseScore":39,"BaseSeverity":25,"Exploitability":25,"RemediationLevel":25,"ReportConfidence":25,"TemporalScore":25,"CollateralDamagePotential":25,"TargetDistribution":25,"ConfidentialityRequirement":25,"IntegrityRequirement":25,"AvailabilityRequirement":25,"EnvironmentalScore":25},"2.0","AV:N\u002FAC:M\u002FAu:N\u002FC:P\u002FI:P\u002FA:P","MEDIUM","PARTIAL",6.8,8.6,6.4,0.03949,[42,42,42,42,42,42,42],"High",[46,50,55,60,63,66],{"vendor":47,"product":47,"version":48,"criteria":49,"vulnerable":4},"rsyslog","*","cpe:2.3:a:rsyslog:rsyslog:*:*:*:*:*:*:*:*",{"vendor":51,"product":52,"version":53,"criteria":54,"vulnerable":4},"fedoraproject","fedora","35","cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*",{"vendor":56,"product":57,"version":58,"criteria":59,"vulnerable":4},"debian","debian_linux","9.0","cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",{"vendor":56,"product":57,"version":61,"criteria":62,"vulnerable":4},"10.0","cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",{"vendor":56,"product":57,"version":64,"criteria":65,"vulnerable":4},"11.0","cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",{"vendor":67,"product":68,"version":69,"criteria":70,"vulnerable":4},"netapp","active_iq_unified_manager","-","cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*",6,[73,79,82,87,91,95],{"url":74,"source":75,"tags":76},"https:\u002F\u002Fgithub.com\u002Frsyslog\u002Frsyslog\u002Fcommit\u002Ff211042ecbb472f9d8beb4678a65d272b6f07705","GitHub",[77,78],"Patch","Third 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Overflow')","The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.","A buffer overflow condition exists when a product attempts to put more data in a buffer than it can hold, or when it attempts to put data in a memory area outside of the boundaries of a buffer. The simplest type of error, and the most common cause of buffer overflows, is the \"classic\" case in which the product copies the buffer without restricting how much is copied. Other variants exist, but the existence of a classic overflow strongly suggests that the programmer is not considering even the most basic of security protections.","Incomplete","Base","Simple",{"id":108,"name":109,"description":110,"extendedDescription":111,"status":104,"abstraction":105,"structure":106},"CWE-1284","Improper Validation of Specified Quantity in Input","The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.","Specified quantities include size, length, frequency, price, rate, number of operations, time, and others. Code may rely on specified quantities to allocate resources, perform calculations, control iteration, etc. When the quantity is not properly validated, then attackers can specify malicious quantities to cause excessive resource allocation, trigger unexpected failures, enable buffer overflows, etc.",2,false,[],{"title":116,"metaDescription":117,"keywords":118,"canonicalUrl":119,"structuredData":120},"What is CVE-2022-24903? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2022-24903, a high severity cyber security vulnerability from 2022. Rsyslog is a rocket-fast system for log processing. Modules...","CVE-2022-24903, CVE-2022-24903 vulnerability, CVE-2022-24903 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2022, CVSS score, exploit, patch, remediation, rsyslog security, fedoraproject security, debian security, netapp security, rsyslog vulnerability, fedora vulnerability, debian_linux vulnerability, active_iq_unified_manager vulnerability","\u002Fwhat-is\u002Fcve-2022-24903",{"@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-2022-24903","Cybersecurity","CVE-2022-24903, CVE-2022-24903 vulnerability, CVE-2022-24903 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[141,149,155,165],{"Operator":25,"Negate":25,"Nodes":142},[143],{"Operator":144,"Negate":25,"CPEMatch":145},"OR",[146],{"Vulnerable":4,"Criteria":49,"MatchCriteriaID":147,"VersionStartExcluding":25,"VersionStartIncluding":25,"VersionEndExcluding":148,"VersionEndIncluding":25},"44AF6D1B-803C-48AB-ABEC-541C3B9CD726","8.2204.1",{"Operator":25,"Negate":25,"Nodes":150},[151],{"Operator":144,"Negate":25,"CPEMatch":152},[153],{"Vulnerable":4,"Criteria":54,"MatchCriteriaID":154,"VersionStartExcluding":25,"VersionStartIncluding":25,"VersionEndExcluding":25,"VersionEndIncluding":25},"80E516C0-98A4-4ADE-B69F-66A772E2BAAA",{"Operator":25,"Negate":25,"Nodes":156},[157],{"Operator":144,"Negate":25,"CPEMatch":158},[159,161,163],{"Vulnerable":4,"Criteria":59,"MatchCriteriaID":160,"VersionStartExcluding":25,"VersionStartIncluding":25,"VersionEndExcluding":25,"VersionEndIncluding":25},"DEECE5FC-CACF-4496-A3E7-164736409252",{"Vulnerable":4,"Criteria":62,"MatchCriteriaID":162,"VersionStartExcluding":25,"VersionStartIncluding":25,"VersionEndExcluding":25,"VersionEndIncluding":25},"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",{"Vulnerable":4,"Criteria":65,"MatchCriteriaID":164,"VersionStartExcluding":25,"VersionStartIncluding":25,"VersionEndExcluding":25,"VersionEndIncluding":25},"FA6FEEC2-9F11-4643-8827-749718254FED",{"Operator":25,"Negate":25,"Nodes":166},[167],{"Operator":144,"Negate":25,"CPEMatch":168},[169],{"Vulnerable":4,"Criteria":70,"MatchCriteriaID":170,"VersionStartExcluding":25,"VersionStartIncluding":25,"VersionEndExcluding":25,"VersionEndIncluding":25},"3A756737-1CC4-42C2-A4DF-E1C893B4E2D5",[],[173,180],{"id":174,"eventType":175,"eventTime":176,"details":177,"label":178,"color":179},"d7de1a3c-3571-4019-be1e-5cb498a0ce36","HIGH_EPSS_DELTA","2025-11-19T04:05:43.95486+00:00","Daily EPSS score increased by 0.140 on 2023-12-30","EPSS Score Increased","red",{"id":181,"eventType":182,"eventTime":183,"details":184,"label":185,"color":186},"9f51e2b8-c115-4399-b096-c57cfedac97c","LOW_EPSS_DELTA","2025-11-22T04:05:32.796485+00:00","Daily EPSS score decreased by 0.140 on 2023-12-30","EPSS Score Decreased","green",{"lastModified":11,"cacheTime":188,"version":35},1792368157825,{"score":190,"band":191,"action":192,"scoredAt":193},48,"Medium","Plan remediation","2026-10-16T06:54:26.799086+00:00"]