CVE-2018-0495

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Summary

CVECVE-2018-0495
StatePUBLISHED
Assignerdebian
Source PriorityCVE Program / NVD first with legacy fallback
Published2018-06-13 23:29:00 UTC
Updated2026-10-14 07:16:41 UTC
DescriptionLibgcrypt 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.

Risk And Classification

Primary CVSS: v3.0 4.7 MEDIUM from [email protected]

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Problem Types: CWE-203 | side-channel attack

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary4.7MEDIUMCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
2.0[email protected]Primary1.9AV:L/AC:M/Au:N/C:P/I:N/A:N

CVSS v3.0 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None

AV:L/AC:M/Au:N/C:P/I:N/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Gnupg Libgcrypt All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na Libgcrypt Before 1.7.10 And 1.8.x Before 1.8.3 affected Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified

References

ReferenceSourceLinkTags
git.gnupg.org Git - libgcrypt.git/commit af854a3a-2127-422b-91ae-364da2661108 git.gnupg.org
cert-portal.siemens.com/productcert/html/ssa-398330.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
USN-3689-1: Libgcrypt vulnerability | Ubuntu security notices af854a3a-2127-422b-91ae-364da2661108 usn.ubuntu.com Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
⚓ T4011 CVE-2018-0495 af854a3a-2127-422b-91ae-364da2661108 dev.gnupg.org Patch, Vendor Advisory
www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-numbe... af854a3a-2127-422b-91ae-364da2661108 www.nccgroup.trust Exploit, Third Party Advisory
USN-3850-1: NSS vulnerabilities | Ubuntu security notices af854a3a-2127-422b-91ae-364da2661108 usn.ubuntu.com Third Party Advisory
USN-3692-1: OpenSSL vulnerabilities | Ubuntu security notices af854a3a-2127-422b-91ae-364da2661108 usn.ubuntu.com Third Party Advisory
Libgcrypt ECDSA Signature Calculation Timing Flaw Lets Local Users Obtain Private DSA Keys on the Target System - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com Third Party Advisory, VDB Entry
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
[Announce] Libgcrypt 1.8.3 and 1.7.10 to fix CVE-2018-0495 af854a3a-2127-422b-91ae-364da2661108 lists.gnupg.org Vendor Advisory
USN-3850-2: NSS vulnerabilities | Ubuntu security notices af854a3a-2127-422b-91ae-364da2661108 usn.ubuntu.com Third Party Advisory
USN-3692-2: OpenSSL vulnerabilities | Ubuntu security notices af854a3a-2127-422b-91ae-364da2661108 usn.ubuntu.com Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
[SECURITY] [DLA 1405-1] libgcrypt20 security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
USN-3689-2: Libgcrypt vulnerability | Ubuntu security notices af854a3a-2127-422b-91ae-364da2661108 usn.ubuntu.com Third Party Advisory
Oracle Critical Patch Update Advisory - April 2019 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
OpenBSD ECDSA Signature Calculation Timing Flaw Lets Local Users Obtain Private DSA Keys on the Target System - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com Third Party Advisory, VDB Entry
Debian -- Security Information -- DSA-4231-1 libgcrypt20 af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
git.gnupg.org Git - libgcrypt.git/commit MITRE git.gnupg.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 296092 Oracle Solaris 11.4 Support Repository Update (SRU) 7.1.4 Missing (CPUJAN2019)
  • 377300 Alibaba Cloud Linux Security Update for nss, nss-softokn, nss-util, and nspr (ALINUX2-SA-2019:0104)
  • 500292 Alpine Linux Security Update for libgcrypt
  • 500368 Alpine Linux Security Update for libressl
  • 504058 Alpine Linux Security Update for libgcrypt
  • 591406 Siemens SIMATIC S7-1500 CPU GNU/Linux subsystem Multiple Vulnerabilities (SSB-439005, ICSA-22-104-13)
  • 690634 Free Berkeley Software Distribution (FreeBSD) Security Update for libgcrypt (9b5162de-6f39-11e8-818e-e8e0b747a45a)

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