nss: PKCS#1 v1.5 signatures can be used for TLS 1.3

A vulnerability exists where it possible to force Network Security Services NSS to sign CertificateVerify with PKCS1 v1.5 signatures when those are the only ones advertised by server in CertificateRequest in TLS 1.3. PKCS1 v1.5 signatures should not be used for TLS 1.3 messages. This vulnerabilit...

nss: TLS 1.3 HelloRetryRequest downgrade request sets client into invalid state

A protocol downgrade flaw was found in Network Security Services NSS. After a HelloRetryRequest has been sent, the client may negotiate a lower protocol than TLS 1.3, resulting in an invalid state transition in the TLS State Machine. If the client gets into this state, incoming Application Data...

CVE-2020-5929

In versions 13.0.0-13.0.0 HF2, 12.1.0-12.1.2 HF1, and 11.6.1-11.6.2, BIG-IP platforms with Cavium Nitrox SSL hardware acceleration cards, a Virtual Server configured with a Client SSL profile, and using Anonymous ADH or Ephemeral DHE Diffie-Hellman key exchange and Single DH use option not enable...

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 validation does not have anything to do with this issue (i.e. there is no hostname to be sent)

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CVE-2018-10432

Pexip Infinity before 18 allows Remote Denial of Service TLS handshakes in RTMP...

CVE-2020-24619

In mainwindow.cpp in Shotcut before 20.09.13, the upgrade check misuses TLS because of setPeerVerifyModeQSslSocket::VerifyNone. A man-in-the-middle attacker could offer a spoofed download resource...

DTLS Service Detection

Nessus was able to detect that the remote service supports DTLS Datagram Transport Layer Security by sending a ClientHello and receiving a HelloVerifyRequest reply. TRUSTED...

F5 BIG-IP Access Control Error Vulnerability (CNVD-2020-51797)

F5 BIG-IP is an application delivery platform from F5 Inc. that integrates network traffic management, application security management, load balancing, etc. Configuration utility is one of the configuration utilities. A security vulnerability exists in F5 BIG-IP. The vulnerability originates from...

The vulnerability in the implementation of the TLS protocol in Cisco AsyncOS software for Cisco Email Security Appliances allows a attacker to induce a service failure.

The vulnerability of the TLS Transport Layer Security implementation in Cisco AsyncOS software for Cisco Email Security Appliances is related to algorithmic complexity. Exploiting this vulnerability could allow a malicious actor to cause service interruptions...

New Raccoon Attack Could Let Attackers Break SSL/TLS Encryption

A group of researchers has detailed a new timing vulnerability in Transport Layer Security TLS protocol that could potentially allow an attacker to break the encryption and read sensitive communication under specific conditions. Dubbed "Raccoon Attack," the server-side attack exploits a...

DEBIAN-CVE-2020-1968

The Raccoon attack exploits a flaw in the TLS specification which can lead to an attacker being able to compute the pre-master secret in connections which have used a Diffie-Hellman DH based ciphersuite. In such a case this would result in the attacker being able to eavesdrop on all encrypted...

UBUNTU-CVE-2020-1968

The Raccoon attack exploits a flaw in the TLS specification which can lead to an attacker being able to compute the pre-master secret in connections which have used a Diffie-Hellman DH based ciphersuite. In such a case this would result in the attacker being able to eavesdrop on all encrypted...

PT-2020-4161 · Microsoft · Windows

Name of the Vulnerable Software and Affected Versions: Windows affected versions not specified Description: A information disclosure issue exists due to the use of weak hash algorithms by TLS components. This could allow an attacker to obtain information to further compromise a user's encrypted...

Vulnerability fixed in GnuTLS

A vulnerability has been fixed in GnuTLS. The vulnerability allows a remote malicious person who has access to a TLS server that the victim is connected to is able to cause a denial-of-service attack. To exploit the vulnerability the TLS connection must meet specific conditions. The developers of...

AZL-6445 CVE-2020-24659 affecting package gnutls for versions less than 3.6.14-5

An issue was discovered in GnuTLS before 3.6.15. A server can trigger a NULL pointer dereference in a TLS 1.3 client if a norenegotiation alert is sent with unexpected timing, and then an invalid second handshake occurs. The crash happens in the application's error handling path, where the...

PT-2020-3857 · Cisco · Cisco Email Security Appliance

Name of the Vulnerable Software and Affected Versions: Cisco Email Security Appliance ESA versions affected versions not specified Description: A vulnerability in the Transport Layer Security TLS protocol implementation could allow an unauthenticated, remote attacker to cause high CPU usage on an...

PT-2021-6586 · Arm +2 · Arm Mbed Tls +2

Name of the Vulnerable Software and Affected Versions: Arm Mbed TLS versions prior to 2.24.0 Description: An issue in Arm Mbed TLS allows an attacker to recover a private key via a side-channel attack against generation of base blinding/unblinding values, potentially affecting RSA or static...

wolfSSL Information Disclosure Vulnerability (CNVD-2020-49929)

wolfSSL formerly known as CyaSSL is the United States wolfSSL company for embedded systems developers to use a small, portable embedded SSL programming library. An information disclosure vulnerability exists in wolfSSL versions prior to 4.5.0. The vulnerability is related to a buggy implementatio...

DEBIAN-CVE-2020-24613

wolfSSL before 4.5.0 mishandles TLS 1.3 server data in the WAITCERTCR state, within SanityCheckTls13MsgReceived in tls13.c. This is an incorrect implementation of the TLS 1.3 client state machine. This allows attackers in a privileged network position to completely impersonate any TLS 1.3 servers...

CVE-2020-24613

wolfSSL before 4.5.0 mishandles TLS 1.3 server data in the WAITCERTCR state, within SanityCheckTls13MsgReceived in tls13.c. This is an incorrect implementation of the TLS 1.3 client state machine. This allows attackers in a privileged network position to completely impersonate any TLS 1.3 servers...