CVE-2017-11424

In PyJWT 1.5.0 and below the invalidstrings check in HMACAlgorithm.preparekey does not account for all PEM encoded public keys. Specifically, the PKCS1 PEM encoded format would be allowed because it is prefaced with the string -----BEGIN RSA PUBLIC KEY----- which is not accounted for. This enable...

CVE-2017-11424

In PyJWT 1.5.0 and below the invalidstrings check in HMACAlgorithm.preparekey does not account for all PEM encoded public keys. Specifically, the PKCS1 PEM encoded format would be allowed because it is prefaced with the string -----BEGIN RSA PUBLIC KEY----- which is not accounted for. This enable...

CVE-2017-11424

In PyJWT 1.5.0 and below the invalidstrings check in HMACAlgorithm.preparekey does not account for all PEM encoded public keys. Specifically, the PKCS1 PEM encoded format would be allowed because it is prefaced with the string -----BEGIN RSA PUBLIC KEY----- which is not accounted for. This enable...

USN-3372-1: NSS vulnerability

It was discovered that NSS incorrectly handled certain empty SSLv2 messages. A remote attacker could possibly use this issue to cause NSS to crash, resulting in a denial of service. CVE-2017-7502 Karthik Bhargavan and Gaetan Leurent discovered that the DES and Triple DES ciphers were vulnerable t...

Ubuntu 14.04 LTS / 16.04 LTS : NSS vulnerabilities (USN-3270-1)

The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3270-1 advisory. Karthik Bhargavan and Gaetan Leurent discovered that the DES and Triple DES ciphers were vulnerable to birthday attacks. A remote attacker...

ntp: missing key check allows impersonation between authenticated peers (VU#357792)

A flaw was found in the way NTP verified trusted keys during symmetric key authentication. An authenticated client A could use this flaw to modify a packet sent between a server B and a client C using a key that is different from the one known to the client A...

Moderate: Red Hat Security Advisory: ntp security and bug fix update

An update for ntp is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CV...

Updated openssl packages fix security vulnerabilities

Updated openssl packages fix security vulnerability: OpenSSL before 1.0.2f would allow for a process to re-use the same private Diffie-Hellman exponent repeatedly during its entire lifetime, which, given that it also allows to use custom DH parameters which may be based on unsafe primes, could...

MGASA-2016-0038 Updated chrony packages fix security vulnerability

In chrony before 1.31.2, when used with symmetric key encryption, the client would accept packets encrypted with keys for any configured server, allowing a server to impersonate other servers to clients, thus performing a man-in-the-middle attack CVE-2016-1567...

Updated chrony packages fix security vulnerability

In chrony before 1.31.2, when used with symmetric key encryption, the client would accept packets encrypted with keys for any configured server, allowing a server to impersonate other servers to clients, thus performing a man-in-the-middle attack CVE-2016-1567...

Unspecified Vulnerability in NTP

NTP is a network protocol that synchronizes the clocks of two computers by exchanging packets. NTP fails to check symmetric key correspondences when performing packet authentication, allowing a remote attacker to perform impersonation attacks with arbitrary trusted keys...

CVE-2016-1567

chrony before 1.31.2 and 2.x before 2.2.1 do not verify peer associations of symmetric keys when authenticating packets, which might allow remote attackers to conduct impersonation attacks via an arbitrary trusted key, aka a "skeleton key."...

CVE-2015-7974

NTP 4.x before 4.2.8p6 and 4.3.x before 4.3.90 do not verify peer associations of symmetric keys when authenticating packets, which might allow remote attackers to conduct impersonation attacks via an arbitrary trusted key, aka a "skeleton key."...

Network Time Protocol Skeleton Key: Symmetric Authentication Impersonation Vulnerability

CERT VU357792 Summary Symmetric key encryption requires a single trusted key to be specified for each server configuration. A key specified only for one server should only work to authenticate that server, other trusted keys should be refused. Instead we observe that when symmetric key...

Scientific Linux Security Update : ntp on 7.x x86_64 (2015:2231)

The remote Scientific Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the SLSA-2015:2231-4 advisory. - The symmetric-key feature in the receive function in ntpproto.c in ntpd in NTP 4.x before 4.2.8p2 requires a correct MAC only if the MAC field...

Oracle Linux 7 : ntp (ELSA-2015-2231)

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2015-2231 advisory. - check origin timestamp before accepting KoD RATE packet CVE-2015-7704 - allow only one step larger than panic threshold with -g CVE-2015-5300 -...

Amazon Linux: Security Advisory (ALAS-2015-520)

The remote host is missing an update for the SPDX-FileCopyrightText: 2015 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

AIX 6.1 TL 9 : ntp (IV73783)

Network Time Protocol NTP Project NTP daemon ntpd is vulnerable to a denial of service, caused by an error when using symmetric key authentication. By sending specially-crafted packets to both peering hosts, an attacker could exploit this vulnerability to prevent synchronization. %NASLMINLEVEL...

AIX 7.1 TL 2 : ntp (IV74262)

Network Time Protocol NTP Project NTP daemon ntpd is vulnerable to a denial of service, caused by an error when using symmetric key authentication. By sending specially-crafted packets to both peering hosts, an attacker could exploit this vulnerability to prevent synchronization. %NASLMINLEVEL...

AIX 7.1 TL 3 : ntp (IV74261)

The remote AIX host has a version of Network Time Protocol NTP installed that is affected by a denial of service vulnerability due to a flaw in the symmetric-key feature in the receive function in file ntpproto.c when receiving certain invalid packets, which causes state-variable updates to be...