Security advisory
When parsing the AIA-Extension field of a client certificate, Apache Tomcat Native Connector 1.2.0 to 1.2.14 and 1.1.23 to 1.1.34 did not correctly handle fields longer than 127 bytes. The result of the parsing error was to skip the OCSP check. It was therefore possible for client certificates that should have been rejected (if the OCSP check had been made) to be accepted. Users not using OCSP checks are not affected by this vulnerability.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2017-15698
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 07:15 UTC · Revision 1
Source evidence
When parsing the AIA-Extension field of a client certificate, Apache Tomcat Native Connector 1.2.0 to 1.2.14 and 1.1.23 to 1.1.34 did not correctly handle fields longer than 127 bytes. The result of the parsing error was to skip the OCSP check. It was therefore possible for client certificates that should have been rejected (if the OCSP check had been made) to be accepted. Users not using OCSP checks are not affected by this vulnerability.
osv:CVE-2017-15698
Complete source record
{
"id": "ab391ed64aad92ad8262fcd4b9e9949d8b959bf038b25d1a900d8cf23e29f92c",
"url": "https://osv.dev/vulnerability/CVE-2017-15698",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2017-15698",
"summary": "When parsing the AIA-Extension field of a client certificate, Apache Tomcat Native Connector 1.2.0 to 1.2.14 and 1.1.23 to 1.1.34 did not correctly handle fields longer than 127 bytes. The result of the parsing error was to skip the OCSP check. It was therefore possible for client certificates that should have been rejected (if the OCSP check had been made) to be accepted. Users not using OCSP checks are not affected by this vulnerability.",
"evidence": "osv:CVE-2017-15698",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2017-15698",
"aliases": [
"CVE-2017-15698"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/apache/tomcat-native",
"type": "GIT",
"events": [
{
"introduced": "71090a48b31816e3d5a0646be5c3e7b2b533bf07"
},
{
"last_affected": "b78d639697912862696e13c2ee17480766421e29"
},
{
"introduced": "7ad1dc6624569d88278ed12fd593ad78b6ec4930"
},
{
"last_affected": "0ac5ee98131352c53069b071774eef4cd1275e1c"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:apache:tomcat_native:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.1.23"
},
{
"last_affected": "1.1.34"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:apache:tomcat_native:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.2.0"
},
{
"last_affected": "1.2.14"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-15698.json"
}
}
],
"modified": "2026-10-24T10:30:50.831654463Z",
"provider": "osv",
"references": [
"https://lists.apache.org/thread.html/6eb0a53e5827d97db1a05c736d01101fec21202a5b8fc77bb0eaaed8%40%3Cannounce.tomcat.apache.org%3E",
"https://lists.apache.org/thread.html/ba661b0edd913b39ff129a32d855620dd861883ade05fd88a8ce517d%40%3Cdev.tomcat.apache.org%3E",
"https://lists.apache.org/thread.html/f8e0814e11c7f21f42224b6de111cb3f5e5ab5c15b78924c516d4ec2%40%3Cdev.tomcat.apache.org%3E",
"https://lists.apache.org/thread.html/re3b72cbb13e1dfe85c4a06959a3b6ca6d939b407ecca80db12b54220%40%3Cdev.tomcat.apache.org%3E",
"https://lists.apache.org/thread.html/rf8e8c091182b45daa50d3557cad9b10bb4198e3f08cf8f1c66a1b08d%40%3Cdev.tomcat.apache.org%3E",
"https://access.redhat.com/errata/RHSA-2018:0465",
"https://access.redhat.com/errata/RHSA-2018:0466",
"https://lists.debian.org/debian-lts-announce/2018/02/msg00011.html",
"https://www.debian.org/security/2018/dsa-4118"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "8.0"
},
{
"last_affected": "8.0"
},
{
"introduced": "9.0"
},
{
"last_affected": "9.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2017-15698",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 437343,
"published_at": "2018-01-31T14:29:00.467+00:00"
}