Amazon Linux AMI update for 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
 Amazon Linux AMI
Operating systems & Components / Operating system

gnutls
Operating systems & Components / Operating system package or component

Vendor Amazon Web Services

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Inadequate Encryption Strength

EUVDB-ID: #VU72125

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

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

Update the affected packages:

aarch64:
    gnutls-debuginfo-3.7.8-360.amzn2023.0.4.aarch64
    gnutls-c++-debuginfo-3.7.8-360.amzn2023.0.4.aarch64
    gnutls-dane-debuginfo-3.7.8-360.amzn2023.0.4.aarch64
    gnutls-dane-3.7.8-360.amzn2023.0.4.aarch64
    gnutls-utils-debuginfo-3.7.8-360.amzn2023.0.4.aarch64
    gnutls-c++-3.7.8-360.amzn2023.0.4.aarch64
    gnutls-debugsource-3.7.8-360.amzn2023.0.4.aarch64
    gnutls-3.7.8-360.amzn2023.0.4.aarch64
    gnutls-utils-3.7.8-360.amzn2023.0.4.aarch64
    gnutls-devel-3.7.8-360.amzn2023.0.4.aarch64

src:
    gnutls-3.7.8-360.amzn2023.0.4.src

x86_64:
    gnutls-debuginfo-3.7.8-360.amzn2023.0.4.x86_64
    gnutls-c++-debuginfo-3.7.8-360.amzn2023.0.4.x86_64
    gnutls-utils-debuginfo-3.7.8-360.amzn2023.0.4.x86_64
    gnutls-c++-3.7.8-360.amzn2023.0.4.x86_64
    gnutls-debugsource-3.7.8-360.amzn2023.0.4.x86_64
    gnutls-dane-debuginfo-3.7.8-360.amzn2023.0.4.x86_64
    gnutls-dane-3.7.8-360.amzn2023.0.4.x86_64
    gnutls-utils-3.7.8-360.amzn2023.0.4.x86_64
    gnutls-3.7.8-360.amzn2023.0.4.x86_64
    gnutls-devel-3.7.8-360.amzn2023.0.4.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

gnutls: before 3.7.8-360

CPE2.3 External links

http://alas.aws.amazon.com/AL2023/ALAS-2023-171.html


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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