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CVE-2018-0495

Status Candidate

Overview

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.

Related Files

Red Hat Security Advisory 2020-1461-01
Posted Apr 15, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-1461-01 - The nss-softokn package provides the Network Security Services Softoken Cryptographic Module. Issues addressed include an out of bounds write vulnerability.

tags | advisory
systems | linux, redhat
advisories | CVE-2018-0495, CVE-2019-11745
MD5 | fa864e1bc8392e042441c525725153ac
Red Hat Security Advisory 2020-1345-01
Posted Apr 7, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-1345-01 - The nss-softokn package provides the Network Security Services Softoken Cryptographic Module. Issues addressed include an out of bounds write vulnerability.

tags | advisory
systems | linux, redhat
advisories | CVE-2018-0495, CVE-2019-11745
MD5 | 3f42871da847f939eaf14aca5d364fdf
Red Hat Security Advisory 2020-1267-01
Posted Apr 1, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-1267-01 - The nss-softokn package provides the Network Security Services Softoken Cryptographic Module. Issues addressed include an out of bounds write vulnerability.

tags | advisory
systems | linux, redhat
advisories | CVE-2018-0495, CVE-2019-11745
MD5 | c15af207a080dc56dda26f7654fd9802
Red Hat Security Advisory 2019-2237-01
Posted Aug 6, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-2237-01 - Network Security Services is a set of libraries designed to support the cross-platform development of security-enabled client and server applications. Netscape Portable Runtime provides platform independence for non-GUI operating system facilities. Side channel attack vulnerabilities were addressed.

tags | advisory, vulnerability
systems | linux, redhat
advisories | CVE-2018-0495, CVE-2018-12404
MD5 | 50f9e0f39989cc70917b46cabc333a6c
Red Hat Security Advisory 2019-1543-01
Posted Jun 19, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-1543-01 - This release adds the new Apache HTTP Server 2.4.29 Service Pack 2 packages that are part of the JBoss Core Services offering. This release serves as a replacement for Red Hat JBoss Core Services Apache HTTP Server 2.4.29 SP1, and includes bug fixes and enhancements. Issues addressed include denial of service, null pointer, and out of bounds write vulnerabilities.

tags | advisory, web, denial of service, vulnerability
systems | linux, redhat
advisories | CVE-2018-0495, CVE-2018-0732, CVE-2018-1000005, CVE-2018-1000007, CVE-2018-1000120, CVE-2018-1000122, CVE-2018-14404, CVE-2019-0211
MD5 | 014d05dc10107dd19f55f53e14cf431a
Red Hat Security Advisory 2019-1297-01
Posted May 30, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-1297-01 - Red Hat JBoss Core Services is a set of supplementary software for Red Hat JBoss middleware products. This software, such as Apache HTTP Server, is common to multiple JBoss middleware products, and is packaged under Red Hat JBoss Core Services to allow for faster distribution of updates, and for a more consistent update experience. This release of Red Hat JBoss Core Services Apache HTTP Server 2.4.29 Service Pack 2 serves as an update to Red Hat JBoss Core Services Apache HTTP Server 2.4.29, and includes bug fixes for CVEs which are linked to in the References section. It addresses denial of service and privilege escalation vulnerabilities.

tags | advisory, web, denial of service, vulnerability
systems | linux, redhat
advisories | CVE-2018-0495, CVE-2018-0732, CVE-2019-0211
MD5 | f5f4d5eb277ad7396bb2fac8298aa1e5
Red Hat Security Advisory 2019-1296-01
Posted May 30, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-1296-01 - Red Hat JBoss Core Services is a set of supplementary software for Red Hat JBoss middleware products. This software, such as Apache HTTP Server, is common to multiple JBoss middleware products, and is packaged under Red Hat JBoss Core Services to allow for faster distribution of updates, and for a more consistent update experience. This release adds the new Apache HTTP Server 2.4.29 Service Pack 2 packages that are part of the JBoss Core Services offering. It serves as a replacement for Red Hat JBoss Core Services Apache HTTP Server 2.4.29 SP1, and includes bug fixes and enhancements. It addresses denial of service and privilege escalation vulnerabilities.

tags | advisory, web, denial of service, vulnerability
systems | linux, redhat
advisories | CVE-2018-0495, CVE-2018-0732, CVE-2019-0211
MD5 | 645515b920ebbba980d69a1fe451f76e
Ubuntu Security Notice USN-3850-2
Posted Feb 18, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3850-2 - USN-3850-1 fixed several vulnerabilities in NSS. This update provides the corresponding update for Ubuntu 12.04 ESM. Keegan Ryan discovered that NSS incorrectly handled ECDSA key generation. A local attacker could possibly use this issue to perform a cache-timing attack and recover private ECDSA keys. Various other issues were also addressed.

tags | advisory, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2018-0495, CVE-2018-12384, CVE-2018-12404
MD5 | 550bd66bfce61ba6685d7549da716d49
Ubuntu Security Notice USN-3850-1
Posted Jan 9, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3850-1 - Keegan Ryan discovered that NSS incorrectly handled ECDSA key generation. A local attacker could possibly use this issue to perform a cache-timing attack and recover private ECDSA keys. It was discovered that NSS incorrectly handled certain v2-compatible ClientHello messages. A remote attacker could possibly use this issue to perform a replay attack. It was discovered that NSS incorrectly handled certain padding oracles. A remote attacker could possibly use this issue to perform a variant of the Bleichenbacher attack. Various other issues were also addressed.

tags | advisory, remote, local
systems | linux, ubuntu
advisories | CVE-2018-0495, CVE-2018-12384, CVE-2018-12404
MD5 | f31e765a83742d73f9519be5d73246a3
Red Hat Security Advisory 2018-3505-01
Posted Nov 6, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-3505-01 - Red Hat Ansible Tower 3.3.1 is now available and contains a large amount of security fixes.

tags | advisory
systems | linux, redhat
advisories | CVE-2015-9262, CVE-2016-9396, CVE-2017-1000050, CVE-2017-18267, CVE-2017-3735, CVE-2018-0495, CVE-2018-0732, CVE-2018-0737, CVE-2018-0739, CVE-2018-1000805, CVE-2018-1060, CVE-2018-1061, CVE-2018-10733, CVE-2018-10767, CVE-2018-10768, CVE-2018-10844, CVE-2018-10845, CVE-2018-10846, CVE-2018-12384, CVE-2018-12910, CVE-2018-13988, CVE-2018-14679, CVE-2018-14680, CVE-2018-14681, CVE-2018-14682, CVE-2018-16837, CVE-2018-17456
MD5 | b7af30db27ef5f7b266ad41827d5a000
Red Hat Security Advisory 2018-3221-01
Posted Oct 31, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-3221-01 - OpenSSL is a toolkit that implements the Secure Sockets Layer and Transport Layer Security protocols, as well as a full-strength general-purpose cryptography library. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service, protocol
systems | linux, redhat
advisories | CVE-2017-3735, CVE-2018-0495, CVE-2018-0732, CVE-2018-0737, CVE-2018-0739
MD5 | 93916b2adeb03f0b0cd24738dda507b5
Ubuntu Security Notice USN-3692-1
Posted Jun 26, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3692-1 - Keegan Ryan discovered that OpenSSL incorrectly handled ECDSA key generation. An attacker could possibly use this issue to perform a cache-timing attack and recover private ECDSA keys. Guido Vranken discovered that OpenSSL incorrectly handled very large prime values during a key agreement. A remote attacker could possibly use this issue to consume resources, leading to a denial of service. Alejandro Cabrera Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia discovered that OpenSSL incorrectly handled RSA key generation. An attacker could possibly use this issue to perform a cache-timing attack and recover private RSA keys. Various other issues were also addressed.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2018-0495, CVE-2018-0732, CVE-2018-0737
MD5 | 56cd52a341cc1f84b0df7977939c8ef3
Ubuntu Security Notice USN-3692-2
Posted Jun 26, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3692-2 - USN-3692-1 fixed a vulnerability in OpenSSL. This update provides the corresponding update for Ubuntu 12.04 ESM. Keegan Ryan discovered that OpenSSL incorrectly handled ECDSA key generation. An attacker could possibly use this issue to perform a cache-timing attack and recover private ECDSA keys. Various other issues were also addressed.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2017-0737, CVE-2018-0495, CVE-2018-0732, CVE-2018-0737
MD5 | 9be3e658c83ed593e3a872b40b7f8a54
Ubuntu Security Notice USN-3689-2
Posted Jun 19, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3689-2 - USN-3689-1 fixed a vulnerability in Libgcrypt. This update provides the corresponding update for Ubuntu 12.04 ESM. Keegan Ryan discovered that Libgcrypt was susceptible to a side- channel attack. A local attacker could possibly use this attack to recover ECDSA private keys. Various other issues were also addressed.

tags | advisory, local
systems | linux, ubuntu
advisories | CVE-2018-0495
MD5 | 1bcad9aa93b3aefd025d12f27a5427a7
Ubuntu Security Notice USN-3689-1
Posted Jun 19, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3689-1 - Keegan Ryan discovered that Libgcrypt was susceptible to a side-channel attack. A local attacker could possibly use this attack to recover ECDSA private keys.

tags | advisory, local
systems | linux, ubuntu
advisories | CVE-2018-0495
MD5 | 669d8760bbc286c2aa34f3be000a22d7
Debian Security Advisory 4231-1
Posted Jun 18, 2018
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4231-1 - It was discovered that Libgcrypt is prone to a local side-channel attack allowing recovery of ECDSA private keys.

tags | advisory, local
systems | linux, debian
advisories | CVE-2018-0495
MD5 | 8b7597b32fc2a2f158d2624d6e507119
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