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Vulnerability Details : CVE-2018-0495

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.
Publish Date : 2018-06-13 Last Update Date : 2020-08-24
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- CVSS Scores & Vulnerability Types

CVSS Score
1.9
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 203

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2018:3221: openssl security, bug fix, and enhancement update (Moderate) oval:com.redhat.rhsa:def:20183221 unix
RHSA-2019:2237: nss, nss-softokn, nss-util, and nspr security, bug fix, and enhancement update (Moderate) oval:com.redhat.rhsa:def:20192237 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2018-0495

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 12.04 * * * Version Details Vulnerabilities
2 OS Canonical Ubuntu Linux 14.04 * * * Version Details Vulnerabilities
3 OS Canonical Ubuntu Linux 16.04 * * * Version Details Vulnerabilities
4 OS Canonical Ubuntu Linux 17.10 * * * Version Details Vulnerabilities
5 OS Canonical Ubuntu Linux 18.04 * * * Version Details Vulnerabilities
6 OS Canonical Ubuntu Linux 18.10 * * * Version Details Vulnerabilities
7 OS Debian Debian Linux 8.0 * * * Version Details Vulnerabilities
8 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
9 Application Gnupg Libgcrypt * * * * Version Details Vulnerabilities
10 Application Oracle Traffic Director 11.1.1.9.0 * * * Version Details Vulnerabilities
11 Application Redhat Ansible Tower 3.3 * * * Version Details Vulnerabilities
12 OS Redhat Enterprise Linux Desktop 7.0 * * * Version Details Vulnerabilities
13 OS Redhat Enterprise Linux Server 7.0 * * * Version Details Vulnerabilities
14 OS Redhat Enterprise Linux Workstation 7.0 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 6
Debian Debian Linux 2
Gnupg Libgcrypt 1
Oracle Traffic Director 1
Redhat Ansible Tower 1
Redhat Enterprise Linux Desktop 1
Redhat Enterprise Linux Server 1
Redhat Enterprise Linux Workstation 1

- References For CVE-2018-0495

https://access.redhat.com/errata/RHSA-2019:1296
REDHAT RHSA-2019:1296
https://access.redhat.com/errata/RHSA-2019:1543
REDHAT RHSA-2019:1543
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
https://usn.ubuntu.com/3850-1/
UBUNTU USN-3850-1
https://access.redhat.com/errata/RHSA-2018:3505
REDHAT RHSA-2018:3505
https://access.redhat.com/errata/RHSA-2018:3221
REDHAT RHSA-2018:3221
https://usn.ubuntu.com/3692-1/
UBUNTU USN-3692-1
http://www.securitytracker.com/id/1041144
SECTRACK 1041144
http://www.securitytracker.com/id/1041147
SECTRACK 1041147
https://usn.ubuntu.com/3689-1/
UBUNTU USN-3689-1
https://usn.ubuntu.com/3850-2/
UBUNTU USN-3850-2
https://dev.gnupg.org/T4011
https://www.debian.org/security/2018/dsa-4231
DEBIAN DSA-4231
https://usn.ubuntu.com/3692-2/
UBUNTU USN-3692-2
https://usn.ubuntu.com/3689-2/
UBUNTU USN-3689-2
https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=9010d1576e278a4274ad3f4aa15776c28f6ba965
https://lists.debian.org/debian-lts-announce/2018/06/msg00013.html
MLIST [debian-lts-announce] 20180629 [SECURITY] [DLA 1405-1] libgcrypt20 security update
https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/
https://access.redhat.com/errata/RHSA-2019:1297
REDHAT RHSA-2019:1297
https://lists.gnupg.org/pipermail/gnupg-announce/2018q2/000426.html
https://access.redhat.com/errata/RHSA-2019:2237
REDHAT RHSA-2019:2237

- Metasploit Modules Related To CVE-2018-0495

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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