Bug 1654929 (CVE-2018-16868) - CVE-2018-16868 gnutls: Bleichenbacher-like side channel leakage in PKCS#1 v1.5 verification and padding oracle verification
Summary: CVE-2018-16868 gnutls: Bleichenbacher-like side channel leakage in PKCS#1 v1....
Status: NEW
Alias: CVE-2018-16868
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=moderate,public=20181130,repor...
Keywords: Security
Depends On: 1655390 1655392 1655396 1655389 1655391 1655394 1655395 1659095
Blocks: 1649548
TreeView+ depends on / blocked
 
Reported: 2018-11-30 03:52 UTC by Sam Fowler
Modified: 2019-06-14 09:13 UTC (History)
26 users (show)

(edit)
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.
Clone Of:
(edit)
Last Closed:


Attachments (Terms of Use)

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]


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