Bug 1582574 (CVE-2018-10846)

Summary:	CVE-2018-10846 gnutls: "Just in Time" PRIME + PROBE cache-based side channel attack can lead to plaintext recovery
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	ansasaki, erik-fedora, huzaifas, jv+fedora, mike, nmavrogi, pspacek, rh-spice-bugs, rjones, security-response-team, slawomir, tmraz, yjog
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A cache-based side channel attack was found in the way GnuTLS implements CBC-mode cipher suites. An attacker could use a combination of "Just in Time" Prime+probe and Lucky-13 attacks to recover plain text in a cross-VM attack scenario.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-10 10:26:40 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1589708, 1589709, 1619521, 1619522, 1619523, 1619524, 1619525, 1622403
Bug Blocks:	1582575

Description Adam Mariš 2018-05-25 15:39:00 UTC

A cache-based side channel in GnuTLS implementation that leads to plaintext recovery in cross-VM attack setting was found. The attack exploits a novel "Just in Time" PRIME + PROBE attack in combination with a new variant of the original Lucky 13 attack.

Comment 9 Huzaifa S. Sidhpurwala 2018-08-21 05:51:46 UTC

External References:

https://eprint.iacr.org/2018/747

Comment 10 Huzaifa S. Sidhpurwala 2018-08-21 05:54:35 UTC

Created gnutls tracking bugs for this issue:

Affects: fedora-all [bug 1619522]


Created gnutls30 tracking bugs for this issue:

Affects: epel-all [bug 1619524]


Created mingw-gnutls tracking bugs for this issue:

Affects: epel-all [bug 1619525]
Affects: fedora-all [bug 1619523]

Comment 12 Huzaifa S. Sidhpurwala 2018-08-21 06:01:23 UTC

Upstream patch:

https://gitlab.com/gnutls/gnutls/merge_requests/657

Comment 17 errata-xmlrpc 2018-10-30 07:24:48 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:3050 https://access.redhat.com/errata/RHSA-2018:3050