235 lines
9.5 KiB
JSON
235 lines
9.5 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-67194",
|
|
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "VulnCheck",
|
|
"dateReserved": "2026-07-28T16:06:49.774Z",
|
|
"datePublished": "2026-07-29T16:39:09.617Z",
|
|
"dateUpdated": "2026-11-08T14:08:07.565Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
|
|
"shortName": "VulnCheck",
|
|
"dateUpdated": "2026-11-08T14:08:07.565Z"
|
|
},
|
|
"datePublic": "2026-07-29T00:00:00.000Z",
|
|
"title": "Courier IMAP < 6.0.1 Mail Server < 2.0.2 Stack Overflow DoS via Nested SEARCH Queries",
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "Courier IMAP before 6.0.1 and Courier Mail Server before 2.0.2 allow authenticated IMAP users to crash the imapd process via deeply nested parenthesized SEARCH queries. The SEARCH command parser (alloc_search_key in searchinfo.C) recursively descends on nested parenthesized groups through a mutual recursion chain with alloc_search_andlist() and alloc_search_notkey(), with no depth limit. Courier IMAP has no overall command line length limit, making exploitation trivial. A single IMAP command with ~2500 nested parentheses overflows the 8MB default stack, causing SIGSEGV."
|
|
}
|
|
],
|
|
"tags": [
|
|
"x_open-source"
|
|
],
|
|
"problemTypes": [
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"cweId": "CWE-674",
|
|
"description": "Uncontrolled Recursion",
|
|
"type": "CWE"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"defaultStatus": "affected",
|
|
"vendor": "svarshavchik",
|
|
"product": "Courier IMAP",
|
|
"packageURL": "pkg:github/svarshavchik/courier",
|
|
"repo": "https://github.com/svarshavchik/courier",
|
|
"versions": [
|
|
{
|
|
"status": "affected",
|
|
"version": "0",
|
|
"versionType": "semver",
|
|
"lessThan": "6.0.1"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"defaultStatus": "affected",
|
|
"vendor": "svarshavchik",
|
|
"product": "Courier Mail Server",
|
|
"packageURL": "pkg:github/svarshavchik/courier",
|
|
"repo": "https://github.com/svarshavchik/courier",
|
|
"versions": [
|
|
{
|
|
"status": "affected",
|
|
"version": "0",
|
|
"versionType": "semver",
|
|
"lessThan": "2.0.2"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"cpeApplicability": [
|
|
{
|
|
"nodes": [
|
|
{
|
|
"operator": "OR",
|
|
"negate": false,
|
|
"cpeMatch": [
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:a:courier-mta:courier_mail_server:*:*:*:*:*:*:*:*",
|
|
"versionEndExcluding": "2.0.2"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"format": "CVSS",
|
|
"scenarios": [
|
|
{
|
|
"lang": "en",
|
|
"value": "GENERAL"
|
|
}
|
|
],
|
|
"cvssV4_0": {
|
|
"attackVector": "NETWORK",
|
|
"attackComplexity": "LOW",
|
|
"attackRequirements": "NONE",
|
|
"privilegesRequired": "LOW",
|
|
"userInteraction": "NONE",
|
|
"vulnConfidentialityImpact": "NONE",
|
|
"subConfidentialityImpact": "NONE",
|
|
"vulnIntegrityImpact": "NONE",
|
|
"subIntegrityImpact": "NONE",
|
|
"vulnAvailabilityImpact": "HIGH",
|
|
"subAvailabilityImpact": "NONE",
|
|
"exploitMaturity": "NOT_DEFINED",
|
|
"Safety": "NOT_DEFINED",
|
|
"Automatable": "NOT_DEFINED",
|
|
"Recovery": "NOT_DEFINED",
|
|
"valueDensity": "NOT_DEFINED",
|
|
"vulnerabilityResponseEffort": "NOT_DEFINED",
|
|
"providerUrgency": "NOT_DEFINED",
|
|
"version": "4.0",
|
|
"baseSeverity": "HIGH",
|
|
"baseScore": 7.1,
|
|
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
|
|
}
|
|
},
|
|
{
|
|
"format": "CVSS",
|
|
"scenarios": [
|
|
{
|
|
"lang": "en",
|
|
"value": "GENERAL"
|
|
}
|
|
],
|
|
"cvssV3_1": {
|
|
"attackVector": "NETWORK",
|
|
"attackComplexity": "LOW",
|
|
"privilegesRequired": "LOW",
|
|
"userInteraction": "NONE",
|
|
"scope": "UNCHANGED",
|
|
"confidentialityImpact": "NONE",
|
|
"integrityImpact": "NONE",
|
|
"availabilityImpact": "HIGH",
|
|
"version": "3.1",
|
|
"baseSeverity": "MEDIUM",
|
|
"baseScore": 6.5,
|
|
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
|
|
}
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://github.com/svarshavchik/courier/releases/tag/courier-imap%2F6.0.1%2F20260627214444",
|
|
"name": "Courier IMAP 6.0.1 Release Notes",
|
|
"tags": [
|
|
"release-notes"
|
|
]
|
|
},
|
|
{
|
|
"url": "https://github.com/svarshavchik/courier/releases/tag/courier%2F2.0.2%2F20260627214309",
|
|
"name": "Courier Mail Server 2.0.2 Release Notes",
|
|
"tags": [
|
|
"release-notes"
|
|
]
|
|
},
|
|
{
|
|
"url": "https://github.com/svarshavchik/courier-libs/commit/b5b5581aabea3efadf5e2944947ff0214aa3533e",
|
|
"name": "Patch Commit",
|
|
"tags": [
|
|
"patch"
|
|
]
|
|
},
|
|
{
|
|
"url": "https://packages.debian.org/sid/courier-imap",
|
|
"name": "Debian Package",
|
|
"tags": [
|
|
"product"
|
|
]
|
|
},
|
|
{
|
|
"url": "https://www.vulncheck.com/advisories/courier-imap-mail-server-stack-overflow-dos-via-nested-search-queries",
|
|
"tags": [
|
|
"third-party-advisory"
|
|
]
|
|
}
|
|
],
|
|
"credits": [
|
|
{
|
|
"lang": "en",
|
|
"value": "Tristan Madani",
|
|
"type": "finder"
|
|
}
|
|
],
|
|
"source": {
|
|
"discovery": "UNKNOWN"
|
|
},
|
|
"x_generator": {
|
|
"engine": "vulncheck"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"timestamp": "2026-07-29T18:07:00.293768Z",
|
|
"id": "CVE-2026-67194",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "partial"
|
|
}
|
|
],
|
|
"role": "CISA Coordinator",
|
|
"version": "2.0.3"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2026-07-29T18:07:09.182Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |