Bug 1654929 (CVE-2018-16868)

Summary:	CVE-2018-16868 gnutls: Bleichenbacher-like side channel leakage in PKCS#1 v1.5 verification and padding oracle verification
Product:	[Other] Security Response	Reporter:	Sam Fowler <sfowler>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	abhgupta, ansasaki, bmcclain, dbaker, dfediuck, eedri, erik-fedora, jokerman, jv+fedora, mgoldboi, michal.skrivanek, mike, pspacek, rh-spice-bugs, rjones, sbonazzo, security-response-team, sherold, slawomir, ssorce, sthangav, trankin
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 Bleichenbacher type side-channel based padding oracle attack was found in the way gnutls handles verification of RSA decrypted PKCS#1 v1.5 data. An attacker who is able to run a process on the same physical core as the victim process could use this to extract plain text or, in some cases, downgrade any TLS connections to a vulnerable server.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-25 22:22:05 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:	1655389, 1655390, 1655391, 1655392, 1655394, 1655395, 1655396, 1659095
Bug Blocks:	1649548

Description Sam Fowler 2018-11-30 03:52:03 UTC

GnuTLS is vulnerable to Bleichenbacher-like side channel leakage in PKCS#1 1.5 verificati on and padding oracle verification.

Comment 1 Huzaifa S. Sidhpurwala 2018-12-03 04:51:44 UTC

External References:

http://cat.eyalro.net/

Comment 2 Huzaifa S. Sidhpurwala 2018-12-03 04:52:33 UTC

Created gnutls tracking bugs for this issue:

Affects: fedora-all [bug 1655389]


Created gnutls30 tracking bugs for this issue:

Affects: epel-6 [bug 1655391]


Created mingw-gnutls tracking bugs for this issue:

Affects: epel-7 [bug 1655392]
Affects: fedora-all [bug 1655390]