CVE-2018-0495 Detail

Current Description

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.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  4.7 MEDIUM
Vector:  CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.securitytracker.com/id/1041144 Third Party Advisory  VDB Entry 
http://www.securitytracker.com/id/1041147 Third Party Advisory  VDB Entry 
https://access.redhat.com/errata/RHSA-2018:3221 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2018:3505 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2019:1296
https://access.redhat.com/errata/RHSA-2019:1297
https://access.redhat.com/errata/RHSA-2019:1543
https://access.redhat.com/errata/RHSA-2019:2237
https://dev.gnupg.org/T4011 Patch  Vendor Advisory 
https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=9010d1576e278a4274ad3f4aa15776c28f6ba965 Patch  Vendor Advisory 
https://lists.debian.org/debian-lts-announce/2018/06/msg00013.html Mailing List  Third Party Advisory 
https://lists.gnupg.org/pipermail/gnupg-announce/2018q2/000426.html Vendor Advisory 
https://usn.ubuntu.com/3689-1/ Third Party Advisory 
https://usn.ubuntu.com/3689-2/ Third Party Advisory 
https://usn.ubuntu.com/3692-1/ Third Party Advisory 
https://usn.ubuntu.com/3692-2/ Third Party Advisory 
https://usn.ubuntu.com/3850-1/ Third Party Advisory 
https://usn.ubuntu.com/3850-2/ Third Party Advisory 
https://www.debian.org/security/2018/dsa-4231 Third Party Advisory 
https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/ Exploit  Third Party Advisory 
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html Patch  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor cwe source acceptance level NIST  

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Change History

16 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-0495
NVD Published Date:
06/13/2018
NVD Last Modified:
05/30/2019
Source:
MITRE