Security feature bypass

A security vulnerability has been identified in the cryptlib cryptographic library when cryptlib is compiled with the support for RSA key exchange ciphersuites in TLS by setting the USERSASUITES define, it will be vulnerable to the timing variant of the Bleichenbacher attack. An attacker that is...

CVE-2024-0202 Cryptlib: rsa key exchange ciphersuites in tls vulnerable to marvin attack

A security vulnerability has been identified in the cryptlib cryptographic library when cryptlib is compiled with the support for RSA key exchange ciphersuites in TLS by setting the USERSASUITES define, it will be vulnerable to the timing variant of the Bleichenbacher attack. An attacker that is...

CVE-2024-0202: Observable Timing Discrepancy

A security vulnerability has been identified in the cryptlib cryptographic library when cryptlib is compiled with the support for RSA key exchange ciphersuites in TLS by setting the USERSASUITES define, it will be vulnerable to the timing variant of the Bleichenbacher attack. An attacker that is...

The vulnerability of the implementation of the PKCS#1 v1.5 standard for the cryptographic library jsrsasign allows attackers to execute the Bleichenbacher attack or the Marvin attack.

The vulnerability of the PKCS1 v1.5 standard implementation in the jsrsasign cryptographic library is related to the disclosure of information due to incompatibility. Exploiting this vulnerability could allow an attacker, operating remotely, to execute the Bleichenbacher attack or the Marvin atta...

Marvin Attack

jsrsasign is vulnerable to the Marvin Attack. The vulnerability is due to timing leakage in the bit size of raw RSA decryption. This flaw can provide a timing oracle, enabling a timing variant of the Bleichenbacher attack...

Amazon Linux AMI : nss-softokn (ALAS-2024-1907)

The version of nss-softokn installed on the remote host is prior to 3.53.1-6.49. It is, therefore, affected by a vulnerability as referenced in the ALAS-2024-1907 advisory. It was discovered that the numerical library used in NSS for RSA cryptography leaks information whether high order bits of t...

Medium: nss-softokn

Issue Overview: It was discovered that the numerical library used in NSS for RSA cryptography leaks information whether high order bits of the RSA decryption result are zero. This information can be used to mount a Bleichenbacher or Manger like attack against all RSA decryption operations. As the...

Medium: nss

Issue Overview: It was discovered that the numerical library used in NSS for RSA cryptography leaks information whether high order bits of the RSA decryption result are zero. This information can be used to mount a Bleichenbacher or Manger like attack against all RSA decryption operations. As the...

Medium: nss

Issue Overview: It was discovered that the numerical library used in NSS for RSA cryptography leaks information whether high order bits of the RSA decryption result are zero. This information can be used to mount a Bleichenbacher or Manger like attack against all RSA decryption operations. As the...

Medium: nss-softokn

Issue Overview: It was discovered that the numerical library used in NSS for RSA cryptography leaks information whether high order bits of the RSA decryption result are zero. This information can be used to mount a Bleichenbacher or Manger like attack against all RSA decryption operations. As the...

nss: timing attack against RSA decryption

It was discovered that the numerical library used in NSS for RSA cryptography leaks information whether high order bits of the RSA decryption result are zero. This information can be used to mount a Bleichenbacher or Manger like attack against all RSA decryption operations. As the leak happens...

nss: timing attack against RSA decryption

It was discovered that the numerical library used in NSS for RSA cryptography leaks information whether high order bits of the RSA decryption result are zero. This information can be used to mount a Bleichenbacher or Manger like attack against all RSA decryption operations. As the leak happens...

nss: timing attack against RSA decryption

It was discovered that the numerical library used in NSS for RSA cryptography leaks information whether high order bits of the RSA decryption result are zero. This information can be used to mount a Bleichenbacher or Manger like attack against all RSA decryption operations. As the leak happens...

CentOS 8 : nss (CESA-2024:0105)

The remote CentOS Linux 8 host has packages installed that are affected by a vulnerability as referenced in the CESA-2024:0105 advisory. - It was discovered that the numerical library used in NSS for RSA cryptography leaks information whether high order bits of the RSA decryption result are zero...

nss: timing attack against RSA decryption

It was discovered that the numerical library used in NSS for RSA cryptography leaks information whether high order bits of the RSA decryption result are zero. This information can be used to mount a Bleichenbacher or Manger like attack against all RSA decryption operations. As the leak happens...

Siemens SIMATIC and SCALANCE Products Encryption Strength (CVE-2023-0286)

There is a type confusion vulnerability relating to X.400 address processing inside an X.509 GeneralName. X.400 addresses were parsed as an ASN1STRING but the public structure definition for GENERALNAME incorrectly specified the type of the x400Address field as ASN1TYPE. This field is subsequentl...

Siemens SIMATIC and SCALANCE Products Encryption Strength (CVE-2022-4304)

A timing based side channel exists in the OpenSSL RSA Decryption implementation which could be sufficient to recover a plaintext across a network in a Bleichenbacher style attack. To achieve a successful decryption an attacker would have to be able to send a very large number of trial messages fo...

CVE-2023-4421

The NSS code used for checking PKCS1 v1.5 was leaking information useful in mounting Bleichenbacher-like attacks. Both the overall correctness of the padding as well as the length of the encrypted message was leaking through timing side-channel. By sending large number of attacker-selected...

CVE-2023-4421

CVE-2023-4421 concerns the NSS library’s handling of PKCS#1 v1.5 padding, where timing side-channel leakage exposed information about padding validity and message length. This could enable Bleichenbacher-like attacks, allowing an attacker to decrypt previously intercepted PKCS#1 v1.5 ciphertext (...

CVE-2023-4421: Observable Discrepancy

The NSS code used for checking PKCS1 v1.5 was leaking information useful in mounting Bleichenbacher-like attacks. Both the overall correctness of the padding as well as the length of the encrypted message was leaking through timing side-channel. By sending large number of attacker-selected...