{"id":"CVE-2026-125403","state":"PUBLISHED","title":"Ettercap through 0.8.4.1 Out-of-Bounds Read via sslw_remove_sts","description":"Ettercap through 0.8.4.1 contains an out-of-bounds read and size_t underflow vulnerability in sslw_remove_sts() in src/ec_sslwrap.c, caused by a stale length and an unchecked memmem() result when stripping Strict-Transport-Security headers. A malicious HTTPS server whose response passes through Ettercap's SSL interception can trigger out-of-bounds reads and memory corruption in the Ettercap process, which normally runs as root.","publishedAt":"2026-11-09T23:28:04.934Z","updatedAt":"2026-11-09T23:28:04.934Z","severity":{"score":7.2,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["Ettercap ettercap"],"affected":[{"vendor":"Ettercap","product":"ettercap","packageURL":"pkg:github/Ettercap/ettercap","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"0.8.4.1","versionType":"custom"}],"repo":"https://github.com/Ettercap/ettercap"}],"references":["https://github.com/Ettercap/ettercap/security/advisories/GHSA-hq2w-pg4m-6w63","https://github.com/Ettercap/ettercap/commit/1d8badb713579419a29a494bb463a1af59707e98","https://github.com/Ettercap/ettercap/pull/1330","https://github.com/Ettercap/ettercap/blob/v0.8.4.1/src/ec_sslwrap.c#L1294-L1322","https://www.vulncheck.com/advisories/ettercap-through-0.8.4.1-out-of-bounds-read-via-sslw-remove-sts"],"weaknesses":["CWE-125"],"ingestedAt":"2026-11-09T23:36:06.628Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/125xxx/CVE-2026-125403.json","commit":"b5e35fd13cceb3fc2d7ace24f43c95cd80e7dc5f","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-125403","state":"PUBLISHED","datePublished":"2026-11-09T23:28:04.934Z","dateUpdated":"2026-11-09T23:28:04.934Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-11-09T22:03:16.233Z"},"containers":{"cna":{"title":"Ettercap through 0.8.4.1 Out-of-Bounds Read via sslw_remove_sts","descriptions":[{"lang":"en","value":"Ettercap through 0.8.4.1 contains an out-of-bounds read and size_t underflow vulnerability in sslw_remove_sts() in src/ec_sslwrap.c, caused by a stale length and an unchecked memmem() result when stripping Strict-Transport-Security headers. A malicious HTTPS server whose response passes through Ettercap's SSL interception can trigger out-of-bounds reads and memory corruption in the Ettercap process, which normally runs as root."}],"affected":[{"vendor":"Ettercap","product":"ettercap","packageURL":"pkg:github/Ettercap/ettercap","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"0.8.4.1","versionType":"custom"}],"repo":"https://github.com/Ettercap/ettercap"}],"references":[{"url":"https://github.com/Ettercap/ettercap/security/advisories/GHSA-hq2w-pg4m-6w63","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-hq2w-pg4m-6w63)"},{"url":"https://github.com/Ettercap/ettercap/commit/1d8badb713579419a29a494bb463a1af59707e98","tags":["patch"]},{"url":"https://github.com/Ettercap/ettercap/pull/1330","tags":["issue-tracking","patch"]},{"url":"https://github.com/Ettercap/ettercap/blob/v0.8.4.1/src/ec_sslwrap.c#L1294-L1322","tags":["technical-description"]},{"url":"https://www.vulncheck.com/advisories/ettercap-through-0.8.4.1-out-of-bounds-read-via-sslw-remove-sts","name":"VulnCheck Advisory: Ettercap through 0.8.4.1 Out-of-Bounds Read via sslw_remove_sts","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","attackVector":"ADJACENT","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.2,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-125","lang":"en","description":"Out-of-bounds Read","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-11-09T23:28:04.934Z"},"datePublic":"2026-11-06T00:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:ettercap-project:ettercap:*:*:*:*:*:*:*:*","versionEndIncluding":"0.8.4.1"}]}]}],"credits":[{"lang":"en","value":"Adiel Sol, Arad Inbar, Erez Cohen, Nir Somech, Ben Grinberg, Daniel Lubel, Shir Sadon (DREAM Security Research Team)","type":"finder"},{"lang":"en","value":"Emilio Escobar","type":"remediation developer"}],"x_generator":{"engine":"vulncheck-endgame"}}}}}