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OVAL Definitions
>
OVAL Definition Details
Id
oval:ru.altx-soft.nix:def:261316
Version
1
Class
vulnerability
ALTXid
494492
Language
Russian
Severity
High
Title
Sber -- уязвимость в gnutls (CVE-2023-0361)
Description
A timing side-channel in the handling of RSA ClientKeyExchange messages was discovered in GnuTLS. This side-channel can be sufficient to recover the key encrypted in the RSA ciphertext across a network in a Bleichenbacher style attack. To achieve a successful decryption the attacker would need to send a large amount of specially crafted messages to the vulnerable server. By recovering the secret from the ClientKeyExchange message, the attacker would be able to decrypt the application data exchanged over that connection.; A timing side-channel vulnerability was found in RSA ClientKeyExchange messages in GnuTLS. This side-channel may be sufficient to recover the key encrypted in the RSA ciphertext across a network in a Bleichenbacher style attack. To achieve a successful decryption, the attacker would need to send a large amount of specially crafted messages to the vulnerable server. By recovering the secret from the ClientKeyExchange message, the attacker would be able to decrypt the application data exchanged over that connection.
Family
unix
Platform
SberLinux 8
Product
gnutls
Reference
CVE: CVE-2023-0361
CVE: CVE-2023-0361
Id:
CVE-2023-0361
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-0361
Comment
: A timing side-channel in the handling of RSA ClientKeyExchange messages was discovered in GnuTLS. This side-channel can be sufficient to recover the key encrypted in the RSA ciphertext across a network in a Bleichenbacher style attack. To achieve a successful decryption the attacker would need to send a large amount of specially crafted messages to the vulnerable server. By recovering the secret from the ClientKeyExchange message, the attacker would be able to decrypt the application data exchanged over that connection.
CVSSv3 Score:
7.4
Attack vector:
NETWORK
Attack complexity:
HIGH
Privileges required:
NONE
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
HIGH
Integrity impact:
HIGH
Availability impact:
NONE
CVSSv3 Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE:
203 (Information Exposure Through Discrepancy)
References:
https://gitlab.com/gnutls/gnutls/-/issues/1050 (MISC)
https://github.com/tlsfuzzer/tlsfuzzer/pull/679 (MISC)
https://access.redhat.com/security/cve/CVE-2023-0361 (MISC)
[debian-lts-announce] 20230218 [SECURITY] [DLA 3321-1] gnutls28 security update (MLIST)
https://security.netapp.com/advisory/ntap-20230324-0005/ (CONFIRM)
https://security.netapp.com/advisory/ntap-20230725-0005/ (CONFIRM)
FEDORA-2023-1c4a6a47ae ()
FEDORA-2023-5b378b82b3 ()
FEDORA-2023-4fc4c33f2b ()
VENDOR: RHSA-2023:1569
VENDOR: RHSA-2023:1569
Id:
RHSA-2023:1569
Reference:
https://access.redhat.com/errata/RHSA-2023:1569
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