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CVE-2017-15698

21
FAUCET Score

CVE-2017-15698 describes a parsing error in Apache Tomcat Native Connector versions 1.2.0-1.2.14 and 1.1.23-1.1.34 when handling client certificate AIA-Extension fields longer than 127 bytes, leading to skipped OCSP checks. This medium-severity vulnerability (CVSS 5.9) could allow invalid client certificates to be accepted, impacting systems that rely on OCSP for certificate validation. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.1.23, <= 1.1.34CPE matchmatch criteria
cpe:2.3:a:apache:tomcat_native:*:*:*:*:*:*:*:*
>= 1.2.0, <= 1.2.14CPE matchmatch criteria
cpe:2.3:a:apache:tomcat_native:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.9MEDIUM

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.53%
Probability of exploitation in next 30 days
EPSS Percentile
88.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0353 is in the 83rd percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (13)

redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 6Fixed in: mod_cluster-0:1.3.8-2.Final_redhat_2.1.ep7.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 6Fixed in: tomcat7-0:7.0.70-25.ep7.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 6Fixed in: tomcat8-0:8.0.36-29.ep7.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 6Fixed in: tomcat-native-0:1.2.8-11.redhat_11.ep7.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 6Fixed in: tomcat-vault-0:1.1.6-1.Final_redhat_1.1.ep7.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 7Fixed in: mod_cluster-0:1.3.8-2.Final_redhat_2.1.ep7.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 7Fixed in: tomcat7-0:7.0.70-25.ep7.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 7Fixed in: tomcat8-0:8.0.36-29.ep7.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 7Fixed in: tomcat-native-0:1.2.8-11.redhat_11.ep7.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 7Fixed in: tomcat-vault-0:1.1.6-1.Final_redhat_1.1.ep7.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 6Fixed in: tomcat-native
redhatend of lifevia redhat_api
Product: Red Hat JBoss Enterprise Web Server 2Fixed in: tomcat-native

Vendor Advisories (1)

redhatCVE-2017-15698Moderate

tomcat-native: Mishandling of client certificates can allow for OCSP check bypass

Jan 31, 2018

References

access.redhat.com / errata/RHSA-2018:0465
Third Party Advisory
access.redhat.com / errata/RHSA-2018:0466
Third Party Advisory
lists.apache.org / thread.html/6eb0a53e5827d97db1a05c736d01101fec21202a5b8fc77bb0eaaed8%40%3Cannounce.tomcat.apache.org%3E
lists.apache.org / thread.html/ba661b0edd913b39ff129a32d855620dd861883ade05fd88a8ce517d%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/f8e0814e11c7f21f42224b6de111cb3f5e5ab5c15b78924c516d4ec2%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/re3b72cbb13e1dfe85c4a06959a3b6ca6d939b407ecca80db12b54220%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/rf8e8c091182b45daa50d3557cad9b10bb4198e3f08cf8f1c66a1b08d%40%3Cdev.tomcat.apache.org%3E
lists.debian.org / debian-lts-announce/2018/02/msg00011.html
Mailing ListThird Party Advisory
debian.org / security/2018/dsa-4118
Third Party Advisory
securitytracker.com / id/1040390
Third Party AdvisoryVDB Entry