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CVE-2023-5981— Gnutls: timing side-channel in the rsa-psk authentication

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 8
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GnuTLS是一款免费的用于实现SSL、TLS和DTLS协议的安全通信库。 GnuTLS 3.6.7-4+deb10u11版本存在安全漏洞，该漏洞源于RSA-PSK ClientKeyExchange存在安全漏洞，对格式错误密文的响应时间不同于正确的响应时间。

CVSS 5.9 · Medium EPSS 1.27% · P69

Possible ATT&CK Techniques 1 AI

T1200 · Hardware Additions
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I. Basic Information for CVE-2023-5981

Vulnerability Information
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Vulnerability Title
Gnutls: timing side-channel in the rsa-psk authentication
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found that the response times to malformed ciphertexts in RSA-PSK ClientKeyExchange differ from response times of ciphertexts with correct PKCS#1 v1.5 padding.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过时间差异性导致的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
GnuTLS安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GnuTLS是一款免费的用于实现SSL、TLS和DTLS协议的安全通信库。 GnuTLS 3.6.7-4+deb10u11版本存在安全漏洞，该漏洞源于RSA-PSK ClientKeyExchange存在安全漏洞，对格式错误密文的响应时间不同于正确的响应时间。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 8 0:3.6.16-8.el8_9 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 8 0:3.6.16-8.el8_9 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support 0:3.6.16-5.el8_6.2 ~ * cpe:/a:redhat:rhel_eus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.8 Extended Update Support 0:3.6.16-7.el8_8.1 ~ * cpe:/o:redhat:rhel_eus:8.8::baseos
Red Hat Red Hat Enterprise Linux 9 0:3.7.6-23.el9_3.3 ~ * cpe:/o:redhat:enterprise_linux:9::baseos
Red Hat Red Hat Enterprise Linux 9 0:3.7.6-23.el9_3.3 ~ * cpe:/o:redhat:enterprise_linux:9::baseos
Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support 0:3.7.6-21.el9_2.1 ~ * cpe:/a:redhat:rhel_eus:9.2::appstream
Red Hat RHODF-4.15-RHEL-9 v4.15.0-37 ~ * cpe:/a:redhat:openshift_data_foundation:4.15::el9
Red Hat RHODF-4.15-RHEL-9 v4.15.0-68 ~ * cpe:/a:redhat:openshift_data_foundation:4.15::el9
Red Hat RHODF-4.15-RHEL-9 v4.15.0-158 ~ * cpe:/a:redhat:openshift_data_foundation:4.15::el9
Red Hat RHODF-4.15-RHEL-9 v4.15.0-39 ~ * cpe:/a:redhat:openshift_data_foundation:4.15::el9
Red Hat RHODF-4.15-RHEL-9 v4.15.0-58 ~ * cpe:/a:redhat:openshift_data_foundation:4.15::el9
Red Hat RHODF-4.15-RHEL-9 v4.15.0-158 ~ * cpe:/a:redhat:openshift_data_foundation:4.15::el9
Red Hat RHODF-4.15-RHEL-9 v4.15.0-13 ~ * cpe:/a:redhat:openshift_data_foundation:4.15::el9
Red Hat RHODF-4.15-RHEL-9 v4.15.0-81 ~ * cpe:/a:redhat:openshift_data_foundation:4.15::el9
Red Hat RHODF-4.15-RHEL-9 v4.15.0-158 ~ * cpe:/a:redhat:openshift_data_foundation:4.15::el9
Red Hat RHODF-4.15-RHEL-9 v4.15.0-79 ~ * cpe:/a:redhat:openshift_data_foundation:4.15::el9
Red Hat RHODF-4.15-RHEL-9 v4.15.0-22 ~ * cpe:/a:redhat:openshift_data_foundation:4.15::el9
Red Hat RHODF-4.15-RHEL-9 v4.15.0-57 ~ * cpe:/a:redhat:openshift_data_foundation:4.15::el9
Red Hat RHODF-4.15-RHEL-9 v4.15.0-6 ~ * cpe:/a:redhat:openshift_data_foundation:4.15::el9
Red Hat RHODF-4.15-RHEL-9 v4.15.0-158 ~ * cpe:/a:redhat:openshift_data_foundation:4.15::el9
Red Hat RHODF-4.15-RHEL-9 v4.15.0-15 ~ * cpe:/a:redhat:openshift_data_foundation:4.15::el9
Red Hat RHODF-4.15-RHEL-9 v4.15.0-15 ~ * cpe:/a:redhat:openshift_data_foundation:4.15::el9
Red Hat RHODF-4.15-RHEL-9 v4.15.0-54 ~ * cpe:/a:redhat:openshift_data_foundation:4.15::el9
Red Hat RHODF-4.15-RHEL-9 v4.15.0-158 ~ * cpe:/a:redhat:openshift_data_foundation:4.15::el9
Red Hat RHODF-4.15-RHEL-9 v4.15.0-10 ~ * cpe:/a:redhat:openshift_data_foundation:4.15::el9
Red Hat RHODF-4.15-RHEL-9 v4.15.0-26 ~ * cpe:/a:redhat:openshift_data_foundation:4.15::el9
Red Hat RHODF-4.15-RHEL-9 v4.15.0-158 ~ * cpe:/a:redhat:openshift_data_foundation:4.15::el9
Red Hat RHODF-4.15-RHEL-9 v4.15.0-19 ~ * cpe:/a:redhat:openshift_data_foundation:4.15::el9
Red Hat RHODF-4.15-RHEL-9 v4.15.0-158 ~ * cpe:/a:redhat:openshift_data_foundation:4.15::el9

II. Public POCs for CVE-2023-5981

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III. Intelligence Information for CVE-2023-5981

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Vendor Advisories for CVE-2023-5981 (9)

Mailing List Discussions for CVE-2023-5981 (3)

Other References for CVE-2023-5981 (1)

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 8
Same vendor: Red Hat
Same weakness: CWE-208

V. Comments for CVE-2023-5981

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