Bleichenbacher oracle attack in GnuTLS



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-0361
CWE-ID CWE-326
Exploitation vector Network
Public exploit N/A
Vulnerable software
 GnuTLS
Universal components / Libraries / Libraries used by multiple products

Vendor GnuTLS

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Inadequate Encryption Strength

EUVDB-ID: #VU72125

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-0361

CWE-ID: CWE-326 - Inadequate Encryption Strength

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to an error in the TLS RSA key exchange. A remote attacker can perform Bleichenbacher oracle attack and decrypt information.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

GnuTLS: 3.0 - 3.7.8

CPE2.3 External links

https://www.slackware.com/security/viewer.php?l=slackware-security&y=2023&m=slackware-security.345884


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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