CVE-2016-8610

Published: 24 October 2016

A denial of service flaw was found in OpenSSL 0.9.8, 1.0.1, 1.0.2 through 1.0.2h, and 1.1.0 in the way the TLS/SSL protocol defined processing of ALERT packets during a connection handshake. A remote attacker could use this flaw to make a TLS/SSL server consume an excessive amount of CPU and fail to accept connections from other clients.

Priority

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package	Release	Status
gnutls28 Launchpad, Ubuntu, Debian	precise	Ignored (end of life)
	artful	Not vulnerable (3.5.6-4ubuntu2)
	bionic	Not vulnerable (3.5.6-4ubuntu2)
	cosmic	Not vulnerable (3.5.6-4ubuntu2)
	trusty	Does not exist (trusty was needed)
	upstream	Needs triage
	xenial	Released (3.4.10-4ubuntu1.2)
	yakkety	Released (3.5.3-5ubuntu1.1)
	zesty	Not vulnerable (3.5.6-4ubuntu2)
	disco	Not vulnerable (3.5.6-4ubuntu2)
	Patches: upstream: https://gitlab.com/gnutls/gnutls/commit/1ffb827e45721ef56982d0ffd5c5de52376c428e upstream: https://gitlab.com/gnutls/gnutls/commit/42a8bb3bdad73f13425ae18a41addbbc04496101 (bp) upstream: https://gitlab.com/gnutls/gnutls/commit/648bf9b00e1cbf45c6d05fab07e91fad97e6926d (3.3)
openssl098 Launchpad, Ubuntu, Debian	precise	Ignored (end of life)
	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist (trusty was needed)
	upstream	Needs triage
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
gnutls26 Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	precise	Released (2.12.14-5ubuntu3.13)
	trusty	Released (2.12.23-12ubuntu2.6)
	upstream	Needs triage
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
openssl Launchpad, Ubuntu, Debian	artful	Released (1.0.2g-1ubuntu11)
	bionic	Released (1.0.2g-1ubuntu11)
	cosmic	Released (1.0.2g-1ubuntu11)
	disco	Released (1.0.2g-1ubuntu11)
	precise	Released (1.0.1-4ubuntu5.39)
	trusty	Released (1.0.1f-1ubuntu2.22)
	upstream	Needs triage
	xenial	Released (1.0.2g-1ubuntu4.6)
	yakkety	Released (1.0.2g-1ubuntu9.1)
	zesty	Released (1.0.2g-1ubuntu11)
	Patches: upstream: https://git.openssl.org/?p=openssl.git;a=commit;h=af58be768ebb690f78530f796e92b8ae5c9a4401 (master) upstream: https://git.openssl.org/?p=openssl.git;a=commit;h=22646a075e75991b4e8f5d67171e45a6aead5b48 (1.0.2) upstream: https://git.openssl.org/?p=openssl.git;a=commit;h=f1185392189641014dca94f3fe7834bccb5f4c16 (related)

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

Bugs

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8610

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