ROBOT attack against PAN-OS

ROBOT is an attack that affects the TLS RSA key exchange and could lead to decryption of captured sessions if the TLS server originally serving said captured session is still alive, vulnerable and using the same private key. PAN-89936 / CVE-2017-17841 While SSL Decryption and GlobalProtect are...

CVE-2017-12373

A vulnerability in the TLS protocol implementation of legacy Cisco ASA 5500 Series ASA 5505, 5510, 5520, 5540, and 5550 devices could allow an unauthenticated, remote attacker to access sensitive information, aka a Return of Bleichenbacher's Oracle Threat ROBOT attack. An attacker could iterative...

Stack overflow

A vulnerability in the TLS protocol implementation of legacy Cisco ASA 5500 Series ASA 5505, 5510, 5520, 5540, and 5550 devices could allow an unauthenticated, remote attacker to access sensitive information, aka a Return of Bleichenbacher's Oracle Threat ROBOT attack. An attacker could iterative...

CVE-2017-12373

A vulnerability in the TLS protocol implementation of legacy Cisco ASA 5500 Series ASA 5505, 5510, 5520, 5540, and 5550 devices could allow an unauthenticated, remote attacker to access sensitive information, aka a Return of Bleichenbacher's Oracle Threat ROBOT attack. An attacker could iterative...

CVE-2017-12373

CVE-2017-12373 is the BLEICHENBACHER-style RO[B]OT flaw impacting legacy Cisco ASA 5500 TLS stack (ASA 5505/5510/5520/5540/5550). An unauthenticated attacker can iteratively probe TLS handshakes to perform cryptanalytic operations that may decrypt previously captured TLS sessions. Cisco’s advisor...

Attack of the Killer ROBOT

On Dec 12th, 2017, researchers Hanno Böck, Juraj Somorovsky and Craig Young published a paper detailing an attack they called the Return Of Bleichenbacher's Oracle Threat ROBOT. This attack, as the name implies, is an extension of an attack published in 1998 that affects systems using certain...

This Week in Security News

Welcome to our weekly roundup, where we share what you need to know about the cybersecurity news and events that happened over the past few days. Below you’ll find a quick recap of topics followed by links to news articles and/or our blog posts providing additional insight. Be sure to check back...

CVE-2017-12373: Exposure of Sensitive Information to an Unauthorized Actor

A vulnerability in the TLS protocol implementation of legacy Cisco ASA 5500 Series ASA 5505, 5510, 5520, 5540, and 5550 devices could allow an unauthenticated, remote attacker to access sensitive information, aka a Return of Bleichenbacher's Oracle Threat ROBOT attack. An attacker could iterative...

Code injection

Citrix NetScaler Application Delivery Controller ADC and NetScaler Gateway 10.5 before build 67.13, 11.0 before build 71.22, 11.1 before build 56.19, and 12.0 before build 53.22 might allow remote attackers to decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, aka a...

CVE-2017-17382

Citrix NetScaler Application Delivery Controller ADC and NetScaler Gateway 10.5 before build 67.13, 11.0 before build 71.22, 11.1 before build 56.19, and 12.0 before build 53.22 might allow remote attackers to decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, aka a...

CVE-2017-17382

Citrix NetScaler Application Delivery Controller ADC and NetScaler Gateway 10.5 before build 67.13, 11.0 before build 71.22, 11.1 before build 56.19, and 12.0 before build 53.22 might allow remote attackers to decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, aka a...

CVE-2017-17382

Citrix NetScaler Application Delivery Controller ADC and NetScaler Gateway 10.5 before build 67.13, 11.0 before build 71.22, 11.1 before build 56.19, and 12.0 before build 53.22 might allow remote attackers to decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, aka a...

CVE-2017-17382

CVE-2017-17382 affects Citrix NetScaler ADC and NetScaler Gateway (versions 10.5 before 67.13, 11.0 before 71.22, 11.1 before 56.19, and 12.0 before 53.22). The root cause is a Bleichenbacher RSA padding oracle that could allow a remote attacker to decrypt TLS ciphertext, i.e., a ROBOT-style atta...

ROBOT Attack

BouncyCastle is vulnerable to the ROBOT attack. An attacker can leverage a variation of the Bleichenbacher chosen-cipher text attack to break confidentiality of TLS when used with RSA...

UBUNTU-CVE-2017-13098

BouncyCastle TLS prior to version 1.0.3, when configured to use the JCE Java Cryptography Extension for cryptographic functions, provides a weak Bleichenbacher oracle when any TLS cipher suite using RSA key exchange is negotiated. An attacker can recover the private key from a vulnerable...

CVE-2017-17382: Use of a Broken or Risky Cryptographic Algorithm

Citrix NetScaler Application Delivery Controller ADC and NetScaler Gateway 10.5 before build 67.13, 11.0 before build 71.22, 11.1 before build 56.19, and 12.0 before build 53.22 might allow remote attackers to decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, aka a...

ROBOT Attack: 19-Year-Old Bleichenbacher Attack On Encrypted Web Reintroduced

A 19-year-old vulnerability has been re-discovered in the RSA implementation from at least 8 different vendors—including F5, Citrix, and Cisco—that can give man-in-the-middle attackers access to encrypted messages. Dubbed ROBOT Return of Bleichenbacher's Oracle Attack, the attack allows an attack...

Code injection

On BIG-IP versions 11.6.0-11.6.2 fixed in 11.6.2 HF1, 12.0.0-12.1.2 HF1 fixed in 12.1.2 HF2, or 13.0.0-13.0.0 HF2 fixed in 13.0.0 HF3 a virtual server configured with a Client SSL profile may be vulnerable to an Adaptive Chosen Ciphertext attack AKA Bleichenbacher attack against RSA, which when...

CVE-2017-6168

On BIG-IP versions 11.6.0-11.6.2 fixed in 11.6.2 HF1, 12.0.0-12.1.2 HF1 fixed in 12.1.2 HF2, or 13.0.0-13.0.0 HF2 fixed in 13.0.0 HF3 a virtual server configured with a Client SSL profile may be vulnerable to an Adaptive Chosen Ciphertext attack AKA Bleichenbacher attack against RSA, which when...

CVE-2017-6168

Summary of CVE-2017-6168 (F5 BIG-IP ROBOT Bleichenbacher issue) A vulnerability in BIG-IP virtual servers configured with a Client SSL profile can leak plaintext from RSA-based TLS handshakes and enable a MiTM attack, without compromising the server’s private RSA key. Affected versions and fixes ...