| パッケージ | 影響を受けるバージョン | 修正済みバージョン |
|---|---|---|
| openssl | ≥ 1.0.2, < 1.0.2zg≥ 1.1.1, < 1.1.1t≥ 3.0.0, < 3.0.8 | 1.0.2zg1.1.1t3.0.8 |
| endpoint security | < 7.2.40 | 7.2.40 |
| sslvpn | < 3.2.1 | 3.2.1 |
| stormshield network security | ≥ 2.7.0, < 2.7.11≥ 2.8.0, < 3.7.34≥ 3.8.0, < 3.11.22≥ 4.0.0, < 4.3.16≥ 4.4.0, < 4.6.3 | 2.7.113.7.343.11.224.3.164.6.3 |
A timing based side channel exists in the OpenSSL RSA Decryption implementation which could be sufficient to recover a plaintext across a network in a Bleichenbacher style attack. To achieve a successful decryption an attacker would have to be able to send a very large number of trial messages for decryption. The vulnerability affects all RSA padding modes: PKCS#1 v1.5, RSA-OEAP and RSASVE. For example, in a TLS connection, RSA is commonly used by a client to send an encrypted pre-master secret to the server. An attacker that had observed a genuine connection between a client and a server could use this flaw to send trial messages to the server and record the time taken to process them. After a sufficiently large number of messages the attacker could recover the pre-master secret used for the original connection and thus be able to decrypt the application data sent over that connection.
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