"-Synchronized-Data."

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CVE Team 2021-09-06 19:00:56 +00:00
parent 11fd8a5239
commit 51e1813b2f
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4 changed files with 222 additions and 1 deletions

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@ -34,7 +34,7 @@
"description_data": [
{
"lang": "eng",
"value": "Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm, and the window size is not chosen appropriately. (There is also an interoperability problem because the selection of the k integer value does not properly consider the differences between basic ElGamal encryption and generalized ElGamal encryption.) This, for example, affects use of ElGamal in OpenPGP."
"value": "Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm, and the window size is not chosen appropriately. This, for example, affects use of ElGamal in OpenPGP."
}
]
},

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@ -0,0 +1,72 @@
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"ID": "CVE-2021-40528",
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"description": {
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"value": "The ElGamal implementation in Libgcrypt before 1.9.4 allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's ephemeral exponents can lead to a cross-configuration attack against OpenPGP."
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"url": "https://eprint.iacr.org/2021/923",
"refsource": "MISC",
"name": "https://eprint.iacr.org/2021/923"
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{
"url": "https://ibm.github.io/system-security-research-updates/2021/07/20/insecurity-elgamal-pt1",
"refsource": "MISC",
"name": "https://ibm.github.io/system-security-research-updates/2021/07/20/insecurity-elgamal-pt1"
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{
"url": "https://ibm.github.io/system-security-research-updates/2021/09/06/insecurity-elgamal-pt2",
"refsource": "MISC",
"name": "https://ibm.github.io/system-security-research-updates/2021/09/06/insecurity-elgamal-pt2"
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@ -0,0 +1,77 @@
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"value": "The ElGamal implementation in Botan through 2.18.1, as used in Thunderbird and other products, allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's ephemeral exponents can lead to a cross-configuration attack against OpenPGP."
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"url": "https://ibm.github.io/system-security-research-updates/2021/07/20/insecurity-elgamal-pt1",
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"url": "https://github.com/randombit/botan/pull/2790",
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"name": "https://github.com/randombit/botan/pull/2790"
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@ -0,0 +1,72 @@
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