ALT-PU-2021-2104-2

Обновление пакета libcryptopp в ветке sisyphus

Версия8.5.0-alt1

Задание#276528

Опубликовано2026-02-04

Макс. серьёзностьHIGH

Серьёзность:

Закрытые проблемы (3)

MEDIUM5.9

Crypto++ 8.3.0 and earlier contains a timing side channel in ECDSA signature generation. This allows a local or remote attacker, able to measure the duration of hundreds to thousands of signing operations, to compute the private key used. The issue occurs because scalar multiplication in ecp.cpp (prime field curves, small leakage) and algebra.cpp (binary field curves, large leakage) is not constant time and leaks the bit length of the scalar among other information.

Опубликовано: 2019-07-30Изменено: 2024-11-21

CVSS 2.0СРЕДНЯЯ 4.3

CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:N/A:N

CVSS 3.xСРЕДНЯЯ 5.9

CVSS:3.x/CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Ссылки

MEDIUM5.9

The ElGamal implementation in Crypto++ through 8.5 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.

Опубликовано: 2021-09-06Изменено: 2024-11-21

CVSS 2.0НИЗКАЯ 2.6

CVSS:2.0/AV:N/AC:H/Au:N/C:P/I:N/A:N

CVSS 3.xСРЕДНЯЯ 5.9

CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Ссылки

HIGH7.5

Crypto++ through 8.4 contains a timing side channel in ECDSA signature generation. Function FixedSizeAllocatorWithCleanup could write to memory outside of the allocation if the allocated memory was not 16-byte aligned. NOTE: this issue exists because the CVE-2019-14318 fix was intentionally removed for functionality reasons.

Опубликовано: 2023-08-22Изменено: 2024-11-21

CVSS 3.xВЫСОКАЯ 7.5

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Ссылки