CVE-2018-0495

Impact:
Moderate
Public Date:
2018-06-13
CWE:
CWE-200
Bugzilla:
1591163: CVE-2018-0495 OpenSSL: ROHNP - Key Extraction Side Channel in Multiple Crypto Libraries

The MITRE CVE dictionary describes this issue as:

Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures that can be mitigated through the use of blinding during the signing process in the _gcry_ecc_ecdsa_sign function in cipher/ecc-ecdsa.c, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.

Find out more about CVE-2018-0495 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v3 metrics

NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.

CVSS3 Base Score 5.1
CVSS3 Base Metrics CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector Local
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity Impact None
Availability Impact None

Affected Packages State

Platform Package State
Red Hat Virtualization 4 bouncycastle Not affected
Red Hat Subscription Asset Manager 1 bouncycastle Not affected
Red Hat Satellite 6 bouncycastle Not affected
Red Hat JBoss Web Server 3 openssl Affected
Red Hat JBoss EWS 2 openssl Will not fix
Red Hat JBoss EAP 7 bouncycastle Not affected
Red Hat JBoss EAP 6 openssl Will not fix
Red Hat JBoss EAP 5 openssl Under investigation
Red Hat JBoss Core Services 1 openssl Affected
Red Hat Enterprise Linux 7 libgcrypt Not affected
Red Hat Enterprise Linux 7 openssl098e Will not fix
Red Hat Enterprise Linux 7 nss Affected
Red Hat Enterprise Linux 7 OVMF Under investigation
Red Hat Enterprise Linux 7 openssl Affected
Red Hat Enterprise Linux 6 libgcrypt Not affected
Red Hat Enterprise Linux 6 openssl Will not fix
Red Hat Enterprise Linux 6 openssl098e Will not fix
Red Hat Enterprise Linux 6 nss Affected
Red Hat Enterprise Linux 5 openssl097a Will not fix
Red Hat Enterprise Linux 5 openssl Will not fix
Red Hat Enterprise Linux 5 libgcrypt Not affected
Red Hat Enterprise Linux 5 nss Will not fix

External References

Last Modified

CVE description copyright © 2017, The MITRE Corporation

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