14 results · Feed
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Medium 5.9
jsrsasign: Division by Zero Allows Invalid JWK Modulus to Cause Deterministic Zero Output in RSA Operations
Versions of the package jsrsasign before 11.1.1 are vulnerable to Division by zero due to the RSASetPublic/KEYUTIL parsing path in ext/rsa.js and the BigInteger.modPowInt reduction logic in ext/jsbn.js. An attacker can force RSA public-key operations (e.g., v…
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High 8.7
jsrsasign: Missing cryptographic validation during DSA signing enables private key extraction
Versions of the package jsrsasign before 11.1.1 are vulnerable to Missing Cryptographic Step via the KJUR.crypto.DSA.signWithMessageHash process in the DSA signing implementation. An attacker can recover the private key by forcing r or s to be zero, so the li…
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Critical 9.1
jsrsasign: Incomplete Comparison Allows DSA Private Key Recovery via Biased Nonce Generation
Versions of the package jsrsasign from 7.0.0 and before 11.1.1 are vulnerable to Incomplete Comparison with Missing Factors via the getRandomBigIntegerZeroToMax and getRandomBigIntegerMinToMax functions in src/crypto-1.1.js; an attacker can recover the privat…
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High 7.5
jsrsasign is vulnerable to DoS through Infinite Loop when processing zero or negative inputs
Versions of the package jsrsasign before 11.1.1 are vulnerable to Infinite loop via the bnModInverse function in ext/jsbn2.js when the BigInteger.modInverse implementation receives zero or negative inputs, allowing an attacker to hang the process permanently …
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High 7.5
jsrsasign: Negative Exponent Handling Leads to Signature Verification Bypass
Versions of the package jsrsasign before 11.1.1 are vulnerable to Incorrect Conversion between Numeric Types due to handling negative exponents in ext/jsbn2.js. An attacker can force the computation of incorrect modular inverses and break signature verificati…
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High 7.4
jsrsasign: DSA signatures or X.509 certificates can be forged via DSA domain-parameter validation in KJUR.crypto.DSA.setPublic
Versions of the package jsrsasign before 11.1.1 are vulnerable to Improper Verification of Cryptographic Signature via the DSA domain-parameter validation in KJUR.crypto.DSA.setPublic (and the related DSA/X509 verification flow in src/dsa-2.0.js). An attacker…
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High 7.5
Marvin Attack of RSA and RSAOAEP decryption in jsrsasign
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 …
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High 7.7
Improper Verification of Cryptographic Signature
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: Val…
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Medium —
Signatures are mistakenly recognized to be valid in jsrsasign
In the jsrsasign package through 10.1.13 for Node.js, some invalid RSA PKCS#1 v1.5 signatures are mistakenly recognized to be valid. NOTE: there is no known practical attack.
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Critical 9.1
RSA signature validation vulnerability on maleable encoded message in jsrsasign
In the jsrsasign package through 10.1.13 for Node.js, some invalid RSA PKCS#1 v1.5 signatures are mistakenly recognized to be valid. NOTE: there is no known practical attack.
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Medium 5.9
ECDSA signature vulnerability of Minerva timing attack in jsrsasign
### Impact ECDSA side-channel attack named [Minerava](https://minerva.crocs.fi.muni.cz/) have been found and it was found that it affects to jsrsasign. Execution time of thousands signature generation have been observed then EC private key which is scalar val…
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High 7.5
ECDSA signature validation vulnerability by accepting wrong ASN.1 encoding in jsrsasign
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…
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Critical 9.8
RSA-PSS signature validation vulnerability by prepending zeros in jsrsasign
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…
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Critical 9.8
RSA PKCS#1 decryption vulnerability with prepending zeros in jsrsasign
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 attac…