Vulnerability CVE-2018-16868


Published: 2018-12-03

Description:
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 process on the same physical core as the victim process, could use this to extract plaintext or in some cases downgrade any TLS connections to a vulnerable server.

Type:

CWE-310

(Cryptographic Issues)

CVSS2 => (AV:L/AC:M/Au:N/C:P/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
3.3/10
4.9/10
3.4/10
Exploit range
Attack complexity
Authentication
Local
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
None
Affected software
GNU -> Gnutls 

 References:
http://cat.eyalro.net/
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00017.html
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00068.html
http://www.securityfocus.com/bid/106080
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16868

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