Input validation

DISPUTED systemd 239 through 245 accepts any certificate signed by a trusted certificate authority for DNS Over TLS. Server Name Indication SNI is not sent, and there is no hostname validation with the GnuTLS backend. NOTE: This has been disputed by the developer as not a vulnerability since...

CVE-2018-21029

systemd 239 through 245 accepts any certificate signed by a trusted certificate authority for DNS Over TLS. Server Name Indication SNI is not sent, and there is no hostname validation with the GnuTLS backend. NOTE: This has been disputed by the developer as not a vulnerability since hostname...

CVE-2018-21029

CVE-2018-21029 affects systemd 239–245, where DNS over TLS accepts any CA-signed certificate because hostname validation is not performed with the GnuTLS backend and SNI is not sent. This creates potential exposure of confidentiality/integrity/availability for DNS over TLS connections, with CVSS ...

CVE-2018-21029

systemd 239 through 245 accepts any certificate signed by a trusted certificate authority for DNS Over TLS. Server Name Indication SNI is not sent, and there is no hostname validation with the GnuTLS backend. NOTE: This has been disputed by the developer as not a vulnerability since hostname...

EulerOS 2.0 SP3 : gnutls (EulerOS-SA-2019-2016)

According to the version of the gnutls packages installed, the EulerOS installation on the remote host is affected by the following vulnerability : - A cache-based side channel attack was found in the way GnuTLS implements CBC-mode cipher suites. An attacker could use a combination of 'Just in...

FreeBSD : Exim -- RCE with root privileges in TLS SNI handler (61db9b88-d091-11e9-8d41-97657151f8c2)

Exim developers report : If your Exim server accepts TLS connections, it is vulnerable. This does not depend on the TLS libray, so both, GnuTLS and OpenSSL are affected. The vulnerability is exploitable by sending a SNI ending in a backslash-null sequence during the initial TLS handshake. The...

Exim TLS Flaw Opens Email Servers to Remote 'Root' Code Execution Attacks

A critical remote code execution vulnerability has been discovered in the popular open-source Exim email server software, leaving at least over half a million email servers vulnerable to remote hackers. Exim maintainers today released Exim version 4.92.2 after publishing an early warning two days...

Exim TLS Flaw Opens Email Servers to Remote 'Root' Code Execution Attacks

A critical remote code execution vulnerability has been discovered in the popular open-source Exim email server software, leaving at least over half a million email servers vulnerable to remote hackers. Exim maintainers today released Exim version 4.92.2 after publishing an early warning two days...

Exim -- RCE with root privileges in TLS SNI handler

Exim developers report: If your Exim server accepts TLS connections, it is vulnerable. This does not depend on the TLS libray, so both, GnuTLS and OpenSSL are affected. The vulnerability is exploitable by sending a SNI ending in a backslash-null sequence during the initial TLS handshake. The...

NewStart CGSL CORE 5.04 / MAIN 5.04 : gnutls Multiple Vulnerabilities (NS-SA-2019-0068)

The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has gnutls packages installed that are affected by multiple vulnerabilities: - It was found that GnuTLS's implementation of HMAC- SHA-256 was vulnerable to Lucky Thirteen-style attack. A remote attacker could use this flaw to...

NewStart CGSL MAIN 4.05 : gnutls Multiple Vulnerabilities (NS-SA-2019-0109)

The remote NewStart CGSL host, running version MAIN 4.05, has gnutls packages installed that are affected by multiple vulnerabilities: - Stack-based buffer overflow in the cdkpkgetkeyid function in lib/opencdk/pubkey.c in GnuTLS before 3.3.26 and 3.5.x before 3.5.8 allows remote attackers to have...

EulerOS 2.0 SP2 : gnutls (EulerOS-SA-2019-1743)

According to the version of the gnutls packages installed, the EulerOS installation on the remote host is affected by the following vulnerability : - A cache-based side channel attack was found in the way GnuTLS implements CBC-mode cipher suites. An attacker could use a combination of 'Just in...

EulerOS Virtualization for ARM 64 3.0.2.0 : gnutls (EulerOS-SA-2019-1693)

According to the version of the gnutls packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability : - A cache-based side channel attack was found in the way GnuTLS implements CBC-mode cipher suites. An attacker could use a...

gnutls/gnutls_x509_verify_fuzzer: Use-of-uninitialized-value in asn1_write_value

Project: https://gitlab.com/gnutls/gnutls.git Detailed report: https://oss-fuzz.com/testcase?key=5711046548914176 Project: gnutls Fuzzer: libFuzzergnutlsx509verifyfuzzer Fuzz target binary: gnutlsx509verifyfuzzer Job Type: libfuzzermsangnutls Platform Id: linux Crash Type:...

SUSE SLED15 / SLES15 Security Update : gnutls (SUSE-SU-2019:1351-2)

This update for gnutls fixes the following issues : Security issue fixed : CVE-2018-16868: Fixed Bleichenbacher-like side channel leakage in PKCS1 v1.5 verification bsc1118087. Non-security issue fixed: Explicitly require libnettle 3.4.1 to prevent missing symbol errors bsc1134856. Note that...

EulerOS 2.0 SP5 : gnutls (EulerOS-SA-2019-1676)

According to the version of the gnutls packages installed, the EulerOS installation on the remote host is affected by the following vulnerability : - A cache-based side channel attack was found in the way GnuTLS implements CBC-mode cipher suites. An attacker could use a combination of 'Just in...

SUSE-SU-2019:1351-2 Security update for gnutls

This update for gnutls fixes the following issues: Security issue fixed: - CVE-2018-16868: Fixed Bleichenbacher-like side channel leakage in PKCS1 v1.5 verification bsc1118087. Non-security issue fixed: - Explicitly require libnettle 3.4.1 to prevent missing symbol errors bsc1134856...

EulerOS 2.0 SP8 : gnutls (EulerOS-SA-2019-1649)

According to the versions of the gnutls packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - A flaw was found in the way gnutls handled malformed TLS 1.3 asynchronous messages. An attacker could use this flaw to crash an application...

Photon OS 2.0: Gnutls PHSA-2019-2.0-0152

An update of the gnutls package has been released. C Tenable Network Security, Inc. The descriptive text and package checks in this plugin were extracted from VMware Security Advisory PHSA-2019-2.0-0152. The text itself is copyright C VMware, Inc. include'compat.inc'; if description scriptid12621...

USN-3999-1: GnuTLS vulnerabilities | Cloud Foundry

Severity Medium Vendor Canonical Ubuntu Versions Affected Canonical Ubuntu 16.04 Canonical Ubuntu 18.04 Description Eyal Ronen, Kenneth G. Paterson, and Adi Shamir discovered that GnuTLS was vulnerable to a timing side-channel attack known as the “Lucky Thirteen” issue. A remote attacker could...