certfr_avis - certfr-2023-avi-0165

CERTFR-2023-AVI-0165

Vulnerability from certfr_avis

Une vulnérabilité a été corrigée dans StormShield SSLVPN. Elle permet à un attaquant de provoquer une atteinte à la confidentialité des données.

Solution

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

None

Impacted products

	Vendor	Product	Description
	Stormshield	N/A	StormShield SSLVPN versions antérieures à 3.2.1

References

Title

Publication Time

CVE-2022-4304 (GCVE-0-2022-4304)

Vulnerability from cvelistv5

Published

2023-02-08 19:04

Modified

2025-08-27 20:32

Severity ?

CWE

timing based side channel attack

Summary

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.

References

URL

Tags

	https://www.openssl.org/news/secadv/20230207.txt	vendor-advisory
	https://security.gentoo.org/glsa/202402-08

Impacted products

	Vendor	Product	Version
	OpenSSL	OpenSSL	Version: 3.0.0 ≤ Version: 1.1.1 < 1.1.1t Version: 1.0.2 < 1.0.2zg

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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