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Vulnerability details: VCID-sbrt-43uu-6qgt
Vulnerability ID VCID-sbrt-43uu-6qgt
Aliases CVE-2018-17187
GHSA-xvch-r4wf-h8w9
Summary The Apache Qpid Proton-J transport includes an optional wrapper layer to perform TLS, enabled by use of the 'transport.ssl(...)' methods. Unless a verification mode was explicitly configured, client and server modes previously defaulted as documented to not verifying a peer certificate, with options to configure this explicitly or select a certificate verification mode with or without hostname verification being performed. The latter hostname verifying mode was not implemented in Apache Qpid Proton-J versions 0.3 to 0.29.0, with attempts to use it resulting in an exception. This left only the option to verify the certificate is trusted, leaving such a client vulnerable to Man In The Middle (MITM) attack. Uses of the Proton-J protocol engine which do not utilise the optional transport TLS wrapper are not impacted, e.g. usage within Qpid JMS. Uses of Proton-J utilising the optional transport TLS wrapper layer that wish to enable hostname verification must be upgraded to version 0.30.0 or later and utilise the VerifyMode#VERIFY_PEER_NAME configuration, which is now the default for client mode usage unless configured otherwise.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-295 Improper Certificate Validation
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 6.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-17187.json
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2018-17187
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2018-17187
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2018-17187
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2018-17187
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2018-17187
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2018-17187
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2018-17187
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2018-17187
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2018-17187
cvssv3.1 7.4 https://github.com/advisories/GHSA-xvch-r4wf-h8w9
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-xvch-r4wf-h8w9
generic_textual HIGH https://github.com/advisories/GHSA-xvch-r4wf-h8w9
cvssv3.1 7.4 https://github.com/apache/qpid-proton-j/commit/0cb8ca03cec42120dcfc434561592d89a89a805e
generic_textual HIGH https://github.com/apache/qpid-proton-j/commit/0cb8ca03cec42120dcfc434561592d89a89a805e
cvssv3.1 7.4 https://issues.apache.org/jira/browse/PROTON-1962
generic_textual HIGH https://issues.apache.org/jira/browse/PROTON-1962
cvssv3.1 7.4 https://mail-archives.apache.org/mod_mbox/qpid-users/201811.mbox/%3CCAFitrpQSV73Vz7rJYfLJK7gvEymZSCR5ooWUeU8j4jzRydk-eg%40mail.gmail.com%3E
generic_textual HIGH https://mail-archives.apache.org/mod_mbox/qpid-users/201811.mbox/%3CCAFitrpQSV73Vz7rJYfLJK7gvEymZSCR5ooWUeU8j4jzRydk-eg%40mail.gmail.com%3E
cvssv3.1 7.4 https://nvd.nist.gov/vuln/detail/CVE-2018-17187
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2018-17187
cvssv3.1 7.4 https://qpid.apache.org/cves/CVE-2018-17187.html
generic_textual HIGH https://qpid.apache.org/cves/CVE-2018-17187.html
cvssv3.1 7.4 http://www.securityfocus.com/bid/105935
generic_textual HIGH http://www.securityfocus.com/bid/105935
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-17187.json
https://api.first.org/data/v1/epss?cve=CVE-2018-17187
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-17187
https://github.com/advisories/GHSA-xvch-r4wf-h8w9
https://github.com/apache/qpid-proton-j/commit/0cb8ca03cec42120dcfc434561592d89a89a805e
https://issues.apache.org/jira/browse/PROTON-1962
https://mail-archives.apache.org/mod_mbox/qpid-users/201811.mbox/%3CCAFitrpQSV73Vz7rJYfLJK7gvEymZSCR5ooWUeU8j4jzRydk-eg%40mail.gmail.com%3E
http://www.securityfocus.com/bid/105935
1651837 https://bugzilla.redhat.com/show_bug.cgi?id=1651837
CVE-2018-17187 https://nvd.nist.gov/vuln/detail/CVE-2018-17187
CVE-2018-17187.HTML https://qpid.apache.org/cves/CVE-2018-17187.html
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-17187.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

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unchanged

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Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N Found at https://github.com/advisories/GHSA-xvch-r4wf-h8w9
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

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Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N Found at https://github.com/apache/qpid-proton-j/commit/0cb8ca03cec42120dcfc434561592d89a89a805e
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

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required

unchanged

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Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N Found at https://issues.apache.org/jira/browse/PROTON-1962
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

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none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N Found at https://mail-archives.apache.org/mod_mbox/qpid-users/201811.mbox/%3CCAFitrpQSV73Vz7rJYfLJK7gvEymZSCR5ooWUeU8j4jzRydk-eg%40mail.gmail.com%3E
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

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none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2018-17187
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N Found at https://qpid.apache.org/cves/CVE-2018-17187.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N Found at http://www.securityfocus.com/bid/105935
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.49186
EPSS Score 0.00259
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:38:19.075318+00:00 ProjectKB MSRImporter Import https://raw.githubusercontent.com/SAP/project-kb/master/MSR2019/dataset/vulas_db_msr2019_release.csv 38.0.0