CVE-2016-10197

Published: 31 December 2016

The search_make_new function in evdns.c in libevent before 2.1.6-beta allows attackers to cause a denial of service (out-of-bounds read) via an empty hostname.

Priority

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package	Release	Status
firefox Launchpad, Ubuntu, Debian	precise	Ignored
	trusty	Released (53.0+build6-0ubuntu0.14.04.1)
	upstream	Released (53.0)
	xenial	Released (53.0+build6-0ubuntu0.16.04.1)
	yakkety	Released (53.0+build6-0ubuntu0.16.10.1)
	zesty	Released (53.0+build6-0ubuntu0.17.04.1)
libevent Launchpad, Ubuntu, Debian	precise	Released (2.0.16-stable-1ubuntu0.2)
	trusty	Released (2.0.21-stable-1ubuntu1.14.04.2)
	upstream	Released (2.0.21-stable-3)
	xenial	Released (2.0.21-stable-2ubuntu0.16.04.1)
	yakkety	Released (2.0.21-stable-2ubuntu0.16.10.1)
	zesty	Released (2.0.21-stable-3)
	Patches: upstream: https://github.com/libevent/libevent/commit/ec65c42052d95d2c23d1d837136d1cf1d9ecef9e upstream: https://github.com/libevent/libevent/commit/d7348bab602cf4dbdf65b9eeba2fb9ce4646bc0b
thunderbird Launchpad, Ubuntu, Debian	trusty	Released (1:52.1.1+build1-0ubuntu0.14.04.1)
	upstream	Needs triage
	xenial	Released (1:52.1.1+build1-0ubuntu0.16.04.1)
	yakkety	Released (1:52.1.1+build1-0ubuntu0.16.10.1)
	zesty	Released (1:52.1.1+build1-0ubuntu0.17.04.1)

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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Bugs

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