RSA PKCS#1 decryption vulnerability with prepending zeros in jsrsasign

Impact Jsrsasign supports RSA PKCS1 v1.5 i.e. RSAES-PKCS1-v15 and RSA-OAEP encryption and decryption. Its encrypted message is represented as BigInteger. When there is a valid encrypted message, a crafted message with prepending zeros can be decrypted by this vulnerability. - If you don't use RSA...

RSA-PSS signature validation vulnerability by prepending zeros in jsrsasign

Impact Jsrsasign can verify RSA-PSS signature which value can expressed as BigInteger. When there is a valid RSA-PSS signature value, this vulnerability is also accept value with prepending zeros as a valid signature. - If you are not use RSA-PSS signature validation, this vulnerability is not...

GHSA-Q3GH-5R98-J4H3 RSA-PSS signature validation vulnerability by prepending zeros in jsrsasign

Impact Jsrsasign can verify RSA-PSS signature which value can expressed as BigInteger. When there is a valid RSA-PSS signature value, this vulnerability is also accept value with prepending zeros as a valid signature. - If you are not use RSA-PSS signature validation, this vulnerability is not...

Huawei Data Communication: Weak Algorithm Vulnerability in Some Huawei Products (huawei-sa-20200108-01-rsa)

There is a weak algorithm vulnerability in some Huawei products. Copyright C 2020 Greenbone Networks GmbH 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-or-later This program is free...

Improper Verification of Cryptographic Signature

Overview Versions of jsrsasignprior to 8.0.17 fail to properly verify cryptographic signatures. Its RSASSA-PSS RSA-PSS implementation does not detect signature manipulation/modification by prepending '\0' bytes to a signature it accepts these modified signatures as valid. An attacker can abuse th...

TokenBreaker - JSON RSA To HMAC And None Algorithm Vulnerability POC

Token Breaker is focused on 2 particular vulnerability related to JWT tokens. None Algorithm RSAtoHMAC Refer to this link about insights of the vulnerability and how an attacker can forge the tokens Try out this vulnerability here TheNone Usage usage: TheNone.py -h -t TOKEN TokenBreaker:...

Insecure RSA Signature Validation

jsrsasign does not properly validate RSA signatures. The decryption implementation does not detect ciphertext modification prepended by \0 bytes to ciphertexts, allowing an attacker to prepend NULL bytes with the goal of triggering memory corruption issues...

Incorrect Signature Validation

jsrsasign uses an incorrect signature validation. It is possible because its RSASSA-PSS RSA-PSS implementation has a flaw which accepts manipulated/modified signatures as valid signatures by prepending '\0' bytes to a signature and also allows an attacker to send multiple valid signatures to...

CVE-2020-14967

An issue was discovered in the jsrsasign package before 8.0.18 for Node.js. Its RSA PKCS1 v1.5 decryption implementation does not detect ciphertext modification by prepending '\0' bytes to ciphertexts it decrypts modified ciphertexts without error. An attacker might prepend these bytes with the...

CVE-2020-14967

An issue was discovered in the jsrsasign package before 8.0.18 for Node.js. Its RSA PKCS1 v1.5 decryption implementation does not detect ciphertext modification by prepending '\0' bytes to ciphertexts it decrypts modified ciphertexts without error. An attacker might prepend these bytes with the...

Memory corruption

An issue was discovered in the jsrsasign package before 8.0.18 for Node.js. Its RSA PKCS1 v1.5 decryption implementation does not detect ciphertext modification by prepending '\0' bytes to ciphertexts it decrypts modified ciphertexts without error. An attacker might prepend these bytes with the...

CVE-2020-14968

The CVE-2020-14968 issue affects the jsrsasign package for Node.js prior to 8.0.17. Its RSASSA-PSS verification accepts signatures prepended with zero bytes, enabling an attacker to create multiple valid signatures where only one should exist and potentially trigger memory corruption. The confirm...

CVE-2020-14967

CVE-2020-14967 affects the jsrsasign package for Node.js prior to version 8.0.18. The RSA PKCS1 v1.5 decryption path does not detect ciphertext modifications when zeros are prepended to ciphertexts, allowing modified ciphertexts to be decrypted without error and potentially triggering memory corr...

CVE-2020-14967

An issue was discovered in the jsrsasign package before 8.0.18 for Node.js. Its RSA PKCS1 v1.5 decryption implementation does not detect ciphertext modification by prepending '\0' bytes to ciphertexts it decrypts modified ciphertexts without error. An attacker might prepend these bytes with the...

PT-2020-14094

Name of the Vulnerable Software and Affected Versions jsrsasign versions prior to 8.0.18 Description The issue concerns the RSA PKCS1 v1.5 decryption implementation in the jsrsasign package. It fails to detect ciphertext modification when '0' bytes are prepended to ciphertexts, allowing it to...

SUSE-SU-2020:1685-1 Security update for java-1_8_0-ibm

This update for java-180-ibm fixes the following issues: java-180-ibm was updated to Java 8.0 Service Refresh 6 Fix Pack 10 bsc1172277,bsc1169511,bsc1160968 - CVE-2020-2654: Fixed an issue which could have resulted in unauthorized ability to cause a partial denial of service - CVE-2020-2754:...

UBUNTU-CVE-2020-12402

During RSA key generation, bignum implementations used a variation of the Binary Extended Euclidean Algorithm which entailed significantly input-dependent flow. This allowed an attacker able to perform electromagnetic-based side channel attacks to record traces leading to the recovery of the secr...

CVE-2020-12402

During RSA key generation, bignum implementations used a variation of the Binary Extended Euclidean Algorithm which entailed significantly input-dependent flow. This allowed an attacker able to perform electromagnetic-based side channel attacks to record traces leading to the recovery of the secr...

CVE-2020-13757

A flaw was found in the python-rsa package, where it does not explicitly check the ciphertext length against the key size and ignores the leading 0 bytes during the decryption of the ciphertext. This flaw allows an attacker to perform a ciphertext attack, leading to a denial of service. The highe...

CVE-2020-12402

A flaw was found in NSS, where it is vulnerable to RSA key generation cache timing side-channel attacks. An attacker with sufficient access to mount cache timing attacks during the RSA key generation process could recover the private key. The highest threat to this flaw is to confidentiality...