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CVE-2018-12384

Status Candidate

Overview

When handling a SSLv2-compatible ClientHello request, the server doesn't generate a new random value but sends an all-zero value instead. This results in full malleability of the ClientHello for SSLv2 used for TLS 1.2 in all versions prior to NSS 3.39. This does not impact TLS 1.3.

Related Files

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
SHA-256 | 7498b43104d4fb07034d4fa82fae12b25b42d1e94165a25a6a94e278d49e0473
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
SHA-256 | 33dfd212dff4b39a5b8a3ffb081d43f4f2201ce71c47312b15edcf37961cf627
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
SHA-256 | 5a18fce8ca273b8a62b85b1a2bf4e5b4df4fb5583a3543625bcc53528045ab49
Red Hat Security Advisory 2018-2898-01
Posted Oct 9, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-2898-01 - Network Security Services is a set of libraries designed to support the cross-platform development of security-enabled client and server applications. Issues addressed include an nss problem where ServerHello.random is all zeros when handling a v2-compatible ClientHello.

tags | advisory
systems | linux, redhat
advisories | CVE-2018-12384
SHA-256 | 981d8e1a8cc5e3e3605ca76cb71594d80c3e237ad5f779aa821e8a0f842a8877
Red Hat Security Advisory 2018-2768-01
Posted Sep 25, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-2768-01 - Network Security Services is a set of libraries designed to support the cross-platform development of security-enabled client and server applications. Issues addressed include a ClientHello issue with nss.

tags | advisory
systems | linux, redhat
advisories | CVE-2018-12384
SHA-256 | d60f75d418d1de32ebb20da317060c0d372fc15bfcfe685a16247f8fda85737b
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