CVE-2018-17187

Published: 13 November 2018

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.

Priority

Cvss 3 Severity Score

7.4

Score breakdown

Status

Package	Release	Status
qpid-proton Launchpad, Ubuntu, Debian	bionic	Needs triage
	cosmic	Ignored (end of life)
	disco	Not vulnerable (0.22.0-3)
	eoan	Not vulnerable (0.22.0-3.2)
	focal	Not vulnerable (0.22.0-3.2)
	groovy	Not vulnerable (0.22.0-3.2)
	hirsute	Not vulnerable (0.22.0-3.2)
	impish	Not vulnerable (0.22.0-3.2)
	jammy	Not vulnerable (0.22.0-3.2)
	kinetic	Not vulnerable (0.22.0-3.2)
	lunar	Not vulnerable (0.22.0-3.2)
	mantic	Not vulnerable (0.22.0-3.2)
	trusty	Does not exist
	upstream	Released (0.22.0-1)
	xenial	Needs triage

Severity score breakdown

Parameter	Value
Base score	7.4
Attack vector	Network
Attack complexity	High
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	None
Vector	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

References

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