CVE-2021-3716
Vulnerability from cvelistv5
Published
2022-03-02 22:19
Modified
2024-08-03 17:01
Severity ?
EPSS score ?
Summary
A flaw was found in nbdkit due to to improperly caching plaintext state across the STARTTLS encryption boundary. A MitM attacker could use this flaw to inject a plaintext NBD_OPT_STRUCTURED_REPLY before proxying everything else a client sends to the server, potentially leading the client to terminate the NBD session. The highest threat from this vulnerability is to system availability.
References
| ▼ | URL | Tags | |
|---|---|---|---|
| secalert@redhat.com | https://bugzilla.redhat.com/show_bug.cgi?id=1994695 | Issue Tracking, Patch, Third Party Advisory | |
| secalert@redhat.com | https://gitlab.com/nbdkit/nbdkit/-/commit/09a13dafb7bb3a38ab52eb5501cba786365ba7fd | Patch, Third Party Advisory | |
| secalert@redhat.com | https://gitlab.com/nbdkit/nbdkit/-/commit/6c5faac6a37077cf2366388a80862bb00616d0d8 | Patch, Third Party Advisory | |
| secalert@redhat.com | https://listman.redhat.com/archives/libguestfs/2021-August/msg00083.html | Broken Link | |
| secalert@redhat.com | https://www.openwall.com/lists/oss-security/2021/08/18/2 | Mailing List, Third Party Advisory |
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T17:01:08.173Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://www.openwall.com/lists/oss-security/2021/08/18/2"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://listman.redhat.com/archives/libguestfs/2021-August/msg00083.html"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://gitlab.com/nbdkit/nbdkit/-/commit/09a13dafb7bb3a38ab52eb5501cba786365ba7fd"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://gitlab.com/nbdkit/nbdkit/-/commit/6c5faac6a37077cf2366388a80862bb00616d0d8"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1994695"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "nbdkit",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "Affects nbdkit v1.12 through v1.26.4 | Fixedin nbdkit v1.26.5"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in nbdkit due to to improperly caching plaintext state across the STARTTLS encryption boundary. A MitM attacker could use this flaw to inject a plaintext NBD_OPT_STRUCTURED_REPLY before proxying everything else a client sends to the server, potentially leading the client to terminate the NBD session. The highest threat from this vulnerability is to system availability."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-924",
"description": "CWE-924",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2022-03-02T22:19:03",
"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"shortName": "redhat"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://www.openwall.com/lists/oss-security/2021/08/18/2"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://listman.redhat.com/archives/libguestfs/2021-August/msg00083.html"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://gitlab.com/nbdkit/nbdkit/-/commit/09a13dafb7bb3a38ab52eb5501cba786365ba7fd"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://gitlab.com/nbdkit/nbdkit/-/commit/6c5faac6a37077cf2366388a80862bb00616d0d8"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1994695"
}
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "secalert@redhat.com",
"ID": "CVE-2021-3716",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "nbdkit",
"version": {
"version_data": [
{
"version_value": "Affects nbdkit v1.12 through v1.26.4 | Fixedin nbdkit v1.26.5"
}
]
}
}
]
},
"vendor_name": "n/a"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "A flaw was found in nbdkit due to to improperly caching plaintext state across the STARTTLS encryption boundary. A MitM attacker could use this flaw to inject a plaintext NBD_OPT_STRUCTURED_REPLY before proxying everything else a client sends to the server, potentially leading the client to terminate the NBD session. The highest threat from this vulnerability is to system availability."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-924"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://www.openwall.com/lists/oss-security/2021/08/18/2",
"refsource": "MISC",
"url": "https://www.openwall.com/lists/oss-security/2021/08/18/2"
},
{
"name": "https://listman.redhat.com/archives/libguestfs/2021-August/msg00083.html",
"refsource": "MISC",
"url": "https://listman.redhat.com/archives/libguestfs/2021-August/msg00083.html"
},
{
"name": "https://gitlab.com/nbdkit/nbdkit/-/commit/09a13dafb7bb3a38ab52eb5501cba786365ba7fd",
"refsource": "MISC",
"url": "https://gitlab.com/nbdkit/nbdkit/-/commit/09a13dafb7bb3a38ab52eb5501cba786365ba7fd"
},
{
"name": "https://gitlab.com/nbdkit/nbdkit/-/commit/6c5faac6a37077cf2366388a80862bb00616d0d8",
"refsource": "MISC",
"url": "https://gitlab.com/nbdkit/nbdkit/-/commit/6c5faac6a37077cf2366388a80862bb00616d0d8"
},
{
"name": "https://bugzilla.redhat.com/show_bug.cgi?id=1994695",
"refsource": "MISC",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1994695"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"assignerShortName": "redhat",
"cveId": "CVE-2021-3716",
"datePublished": "2022-03-02T22:19:03",
"dateReserved": "2021-08-18T00:00:00",
"dateUpdated": "2024-08-03T17:01:08.173Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2021-3716\",\"sourceIdentifier\":\"secalert@redhat.com\",\"published\":\"2022-03-02T23:15:09.013\",\"lastModified\":\"2023-07-07T19:27:45.270\",\"vulnStatus\":\"Analyzed\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"A flaw was found in nbdkit due to to improperly caching plaintext state across the STARTTLS encryption boundary. A MitM attacker could use this flaw to inject a plaintext NBD_OPT_STRUCTURED_REPLY before proxying everything else a client sends to the server, potentially leading the client to terminate the NBD session. The highest threat from this vulnerability is to system availability.\"},{\"lang\":\"es\",\"value\":\"Se ha encontrado un fallo en nbdkit debido al almacenamiento inapropiado en cach\u00e9 del estado de texto plano a trav\u00e9s del l\u00edmite de cifrado STARTTLS. Un atacante de tipo MitM podr\u00eda usar este fallo para inyectar un texto plano NBD_OPT_STRUCTURED_REPLY antes de hacer proxy todo lo dem\u00e1s que un cliente env\u00eda al servidor, lo que podr\u00eda conllevar a que el cliente termine la sesi\u00f3n NBD. La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"LOW\",\"baseScore\":3.1,\"baseSeverity\":\"LOW\"},\"exploitabilityScore\":1.6,\"impactScore\":1.4}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:S/C:N/I:N/A:P\",\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"SINGLE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\",\"baseScore\":3.5},\"baseSeverity\":\"LOW\",\"exploitabilityScore\":6.8,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-Other\"}]},{\"source\":\"secalert@redhat.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-924\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nbdkit_project:nbdkit:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.11.8\",\"versionEndExcluding\":\"1.24.6\",\"matchCriteriaId\":\"6C81BB5D-5E76-4AB3-A288-ECE78DFC5EF7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nbdkit_project:nbdkit:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.25.1\",\"versionEndExcluding\":\"1.26.5\",\"matchCriteriaId\":\"18CC5957-0C63-4B74-87B8-FA2FA295D9C9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nbdkit_project:nbdkit:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.27.1\",\"versionEndExcluding\":\"1.27.6\",\"matchCriteriaId\":\"50D0C2C5-DE56-4295-80D5-D985775EBC2F\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*\",\"matchCriteriaId\":\"053C1B35-3869-41C2-9551-044182DE0A64\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:*\",\"matchCriteriaId\":\"3AA08768-75AF-4791-B229-AE938C780959\"}]}]}],\"references\":[{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=1994695\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Issue Tracking\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://gitlab.com/nbdkit/nbdkit/-/commit/09a13dafb7bb3a38ab52eb5501cba786365ba7fd\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://gitlab.com/nbdkit/nbdkit/-/commit/6c5faac6a37077cf2366388a80862bb00616d0d8\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://listman.redhat.com/archives/libguestfs/2021-August/msg00083.html\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Broken Link\"]},{\"url\":\"https://www.openwall.com/lists/oss-security/2021/08/18/2\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]}]}}"
}
}