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...

DEBIAN-CVE-2020-12457

An issue was discovered in wolfSSL before 4.5.0. It mishandles the changecipherspec CCS message processing logic for TLS 1.3. If an attacker sends ChangeCipherSpec messages in a crafted way involving more than one in a row, the server becomes stuck in the ProcessReply loop, i.e., a denial of...

UBUNTU-CVE-2020-12457

An issue was discovered in wolfSSL before 4.5.0. It mishandles the changecipherspec CCS message processing logic for TLS 1.3. If an attacker sends ChangeCipherSpec messages in a crafted way involving more than one in a row, the server becomes stuck in the ProcessReply loop, i.e., a denial of...

Improper Input Validation

Overview Affected versions of this package are vulnerable to Improper Input Validation. An issue was discovered in wolfSSL before 4.5.0. It mishandles the changecipherspec CCS message processing logic for TLS 1.3. If an attacker sends ChangeCipherSpec messages in a crafted way involving more than...

Unspecified Vulnerability in Tridium Niagara and Niagara Enterprise Security

Niagara is a suite of platforms for supporting device and application connectivity. A security vulnerability exists in Tridium Niagara and Niagara Enterprise Security that stems from a timeout during the TLS handshake, where the program is unable to interrupt the connection, which can be exploite...

In GNOME glib-networking through 2.64.2 the implementation of GTlsClientConnection skips hostname verification of the server's TLS certificate if the application fails to specify the expected server identity. This is in contrast to its intended documented behavior to fail the certificate verification. Applications that fail to provide the server identity including Balsa before 2.5.11 and 2.6.x before 2.6.1 accept a TLS certificate if the certificate is valid for any host.

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OpenJDK: HostnameChecker does not ensure X.509 certificate names are in normalized form (JSSE, 8237592)

Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE component: JSSE. Supported versions that are affected are Java SE: 7u261, 8u251, 11.0.7 and 14.0.1; Java SE Embedded: 8u251. Difficult to exploit vulnerability allows unauthenticated attacker with network access via TLS to...

OpenJDK: HostnameChecker does not ensure X.509 certificate names are in normalized form (JSSE, 8237592)

Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE component: JSSE. Supported versions that are affected are Java SE: 7u261, 8u251, 11.0.7 and 14.0.1; Java SE Embedded: 8u251. Difficult to exploit vulnerability allows unauthenticated attacker with network access via TLS to...