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CVE-2018-17187

25
FAUCET Score

CVE-2018-17187 describes a critical vulnerability in Apache Qpid Proton-J versions 0.3 to 0.29.0, where the optional TLS wrapper layer failed to properly implement hostname verification. This flaw allowed for Man-in-the-Middle (MITM) attacks against clients, as only certificate trust was verified, leaving the client susceptible to impersonation. With a CVSS score of 7.4 (HIGH), the vulnerability is network-exploitable with high impact on confidentiality and integrity, though it requires high attack complexity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.3, <= 0.29.0CPE matchmatch criteria
cpe:2.3:a:apache:qpid_proton-j:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.4HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
5.2
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.54%
Probability of exploitation in next 30 days
EPSS Percentile
83.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0254 is in the 40th percentile among its peer group of 8,918 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

mavenpatch availablevia ghsa
Product: org.apache.qpid:proton-jFixed in: 0.30.0
redhatend of lifevia redhat_api
Product: Red Hat Enterprise MRG 3Fixed in: qpid-proton-java
redhatend of lifevia redhat_api
Product: Red Hat Fuse 7Fixed in: proton-j

Vendor Advisories (2)

mavenGHSA-xvch-r4wf-h8w9high

Improper Certificate Validation in proton-j

Nov 21, 2018
redhatCVE-2018-17187Moderate

qpid-proton-java: Hostname verification mode not implemented in transport TLS wrapper

Nov 12, 2018

References

issues.apache.org / jira/browse/PROTON-1962
Vendor Advisory
mail-archives.apache.org / mod_mbox/qpid-users/201811.mbox/%3CCAFitrpQSV73Vz7rJYfLJK7gvEymZSCR5ooWUeU8j4jzRydk-eg%40mail.gmail.com%3E
Mailing ListMitigationVendor Advisory
qpid.apache.org / cves/CVE-2018-17187.html
MitigationVendor Advisory
securityfocus.com / bid/105935
Third Party AdvisoryVDB Entry