CVE-2018-0490

Published: 5 March 2018

An issue was discovered in Tor before 0.2.9.15, 0.3.1.x before 0.3.1.10, and 0.3.2.x before 0.3.2.10. The directory-authority protocol-list subprotocol implementation allows remote attackers to cause a denial of service (NULL pointer dereference and directory-authority crash) via a misformatted relay descriptor that is mishandled during voting.

Priority

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package	Release	Status
tor Launchpad, Ubuntu, Debian	artful	Ignored (end of life)
	bionic	Not vulnerable (0.3.2.10-1)
	cosmic	Not vulnerable (0.3.2.10-1)
	trusty	Not vulnerable (code not present)
	upstream	Released (0.3.2.10-1)
	xenial	Released (0.2.9.14-1ubuntu1~16.04.3)

Severity score breakdown

Parameter	Value
Base score	7.5
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

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