CVE-2025-45764

jsrsasign v11.1.0 was discovered to contain weak encryption. NOTE: this issue has been disputed by a third party who believes that CVE IDs can be assigned for key lengths in specific applications that use a library, and should not be assigned to the default key lengths in a library. This dispute ...

CVE-2021-30246

In the jsrsasign package through 10.1.13 for Node.js, some invalid RSA PKCS1 v1.5 signatures are mistakenly recognized to be valid. NOTE: there is no known practical attack...

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-2020-14966

An issue was discovered in the jsrsasign package through 8.0.18 for Node.js. It allows a malleability in ECDSA signatures by not checking overflows in the length of a sequence and '0' characters appended or prepended to an integer. The modified signatures are verified as valid. This could have a...

CVE-2020-14968

An issue was discovered in the jsrsasign package before 8.0.17 for Node.js. 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 this behavior in an...

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...

CVE-2024-21484

A flaw was found in jsrsasign, which is vulnerable to an observable discrepancy via the RSA PKCS1.5 or RSAOAEP decryption process. This flaw allows an attacker to decrypt ciphertexts. Exploiting this vulnerability requires the attacker to have access to a large number of ciphertexts encrypted wit...

CVE-2024-21484

Versions of the package jsrsasign before 11.0.0 are vulnerable to Observable Discrepancy via the RSA PKCS1.5 or RSAOAEP decryption process. An attacker can decrypt ciphertexts by exploiting the Marvin security flaw. Exploiting this vulnerability requires the attacker to have access to a large...

CVE-2024-21484

Versions of the package jsrsasign before 11.0.0 are vulnerable to Observable Discrepancy via the RSA PKCS1.5 or RSAOAEP decryption process. An attacker can decrypt ciphertexts by exploiting the Marvin security flaw. Exploiting this vulnerability requires the attacker to have access to a large...

CVE-2024-21484

Versions of the package jsrsasign before 11.0.0 are vulnerable to Observable Discrepancy via the RSA PKCS1.5 or RSAOAEP decryption process. An attacker can decrypt ciphertexts by exploiting the Marvin security flaw. Exploiting this vulnerability requires the attacker to have access to a large...

CVE-2024-21484

CVE-2024-21484 affects the jsrsasign JavaScript library prior to 11.0.0, where an observable discrepancy in RSA PKCS#1.5 or RSAOAEP decryption can allow an attacker to decrypt ciphertexts. The attack requires access to a large number of ciphertexts encrypted with the same key (Marvin attack). The...

CVE-2024-21484

Versions of the package jsrsasign before 11.0.0 are vulnerable to Observable Discrepancy via the RSA PKCS1.5 or RSAOAEP decryption process. An attacker can decrypt ciphertexts by exploiting the Marvin security flaw. Exploiting this vulnerability requires the attacker to have access to a large...

jsrsasign Security Vulnerabilities

The jsrsasign package is an open source cryptographic library from the individual developer Kenji Urashima in Japan. A security vulnerability exists in jsrsasign versions prior to 11.0.0, which stems from the susceptibility to Observable Discrepancy in the decryption process of RSA PKCS1.5 or...

Marvin Attack of RSA and RSAOAEP decryption in jsrsasign

Impact RSA PKCS1.5 or RSAOAEP ciphertexts may be decrypted by this Marvin attack vulnerability. Patches update to jsrsasign 11.0.0. Workarounds Find and replace RSA and RSAOAEP decryption with other crypto library. References https://people.redhat.com/hkario/marvin/...

GHSA-RH63-9QCF-83GF Marvin Attack of RSA and RSAOAEP decryption in jsrsasign

Impact RSA PKCS1.5 or RSAOAEP ciphertexts may be decrypted by this Marvin attack vulnerability. Patches update to jsrsasign 11.0.0. Workarounds Find and replace RSA and RSAOAEP decryption with other crypto library. References https://people.redhat.com/hkario/marvin/...

Observable Discrepancy

Overview jsrsasign is a free pure JavaScript cryptographic library. Affected versions of this package are vulnerable to Observable Discrepancy via the RSA PKCS1.5 or RSAOAEP decryption process. An attacker can decrypt ciphertexts by exploiting the Marvin security flaw. Exploiting this vulnerabili...

PT-2023-8446

Name of the Vulnerable Software and Affected Versions jsrsasign versions prior to 11.0.0 Description The issue is related to an Observable Discrepancy via the RSA PKCS1.5 or RSAOAEP decryption process in the jsrsasign package. An attacker can decrypt ciphertexts by exploiting this flaw, which is...

K000132744: Node.js vulnerability CVE-2020-14966

Security Advisory Description An issue was discovered in the jsrsasign package through 8.0.18 for Node.js. It allows a malleability in ECDSA signatures by not checking overflows in the length of a sequence and '0' characters appended or prepended to an integer. The modified signatures are verifie...

CVE-2022-25898

The package jsrsasign before 10.5.25 are vulnerable to Improper Verification of Cryptographic Signature when JWS or JWT signature with non Base64URL encoding special characters or number escaped characters may be validated as valid by mistake. Workaround: Validate JWS or JWT signature if it has...

Design/Logic Flaw

The package jsrsasign before 10.5.25 are vulnerable to Improper Verification of Cryptographic Signature when JWS or JWT signature with non Base64URL encoding special characters or number escaped characters may be validated as valid by mistake. Workaround: Validate JWS or JWT signature if it has...