CVE-2023-0361

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Summary

CVECVE-2023-0361
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-02-15 18:15:11 UTC
Updated2026-10-14 20:17:23 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.1 7.4 HIGH from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS: 0.014150000 probability, percentile 0.722100000 (date 2026-10-14)

Problem Types: CWE-203 | side-channel | CWE-203 CWE-203 Observable Discrepancy

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.4HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
3.1ADPDECLARED7.4HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary7.4HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 10.0 All All All
Operating System Fedoraproject Fedora 36 All All All
Operating System Fedoraproject Fedora 37 All All All
Operating System Fedoraproject Fedora 38 All All All
Application Gnu Gnutls 3.6.8-11.el8_2 All All All
Application Netapp Active Iq Unified Manager - All All All
Application Netapp Converged Systems Advisor Agent - All All All
Application Netapp Ontap Select Deploy Administration Utility - All All All
Operating System Redhat Enterprise Linux 8.0 All All All
Operating System Redhat Enterprise Linux 9.0 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na Gnutls affected gnutls-3.7.6 Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified

References

ReferenceSourceLinkTags
cert-portal.siemens.com/productcert/html/ssa-398330.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
[SECURITY] Fedora 36 Update: gnutls-3.8.0-2.fc36 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
[SECURITY] Fedora 38 Update: guile-gnutls-3.7.11-1.fc38 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
[SECURITY] Fedora 37 Update: gnutls-3.8.0-1.fc37 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
Timing sidechannel in RSA decryption (#1050) · Issues · gnutls / GnuTLS · GitLab af854a3a-2127-422b-91ae-364da2661108 gitlab.com Exploit, Issue Tracking, Vendor Advisory
[SECURITY] [DLA 3321-1] gnutls28 security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
CVE-2023-0361 GNU TLS Vulnerability in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com Third Party Advisory
cert-portal.siemens.com/productcert/html/ssa-806742.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
Timing attacks - docs and minor fixes by tomato42 · Pull Request #679 · tlsfuzzer/tlsfuzzer · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Issue Tracking, Patch
July 2023 MySQL Server Vulnerabilities in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com
Red Hat Customer Portal - Access to 24x7 support and knowledge af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
[SECURITY] Fedora 37 Update: gnutls-3.8.0-1.fc37 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
[SECURITY] Fedora 36 Update: gnutls-3.8.0-2.fc36 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
[SECURITY] Fedora 38 Update: guile-gnutls-3.7.11-1.fc38 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 160497 Oracle Enterprise Linux Security Update for gnutls (ELSA-2023-1141)
  • 160526 Oracle Enterprise Linux Security Update for gnutls (ELSA-2023-1569)
  • 181559 Debian Security Update for gnutls28 (DSA 5349-1)
  • 181582 Debian Security Update for gnutls28 (DLA 3321-1)
  • 181897 Debian Security Update for gnutls28 (CVE-2023-0361)
  • 199200 Ubuntu Security Notification for GnuTLS Vulnerability (USN-5901-1)
  • 241240 Red Hat Update for gnutls (RHSA-2023:1141)
  • 241255 Red Hat Update for gnutls (RHSA-2023:1200)
  • 241322 Red Hat Update for gnutls (RHSA-2023:1569)
  • 241563 Red Hat Update for gnutls (RHSA-2023:3361)
  • 283752 Fedora Security Update for gnutls (FEDORA-2023-1c4a6a47ae)
  • 283805 Fedora Security Update for gnutls (FEDORA-2023-4fc4c33f2b)
  • 284274 Fedora Security Update for gnutls (FEDORA-2023-5b378b82b3)
  • 355188 Amazon Linux Security Advisory for gnutls : ALAS2023-2023-171
  • 378414 Alibaba Cloud Linux Security Update for gnutls (ALINUX3-SA-2023:0035)
  • 502659 Alpine Linux Security Update for gnutls
  • 502660 Alpine Linux Security Update for gnutls
  • 502729 Alpine Linux Security Update for gnutls
  • 503109 Alpine Linux Security Update for gnutls
  • 505875 Alpine Linux Security Update for gnutls
  • 672986 EulerOS Security Update for gnutls (EulerOS-SA-2023-1843)
  • 672991 EulerOS Security Update for gnutls (EulerOS-SA-2023-1868)
  • 673025 EulerOS Security Update for gnutls (EulerOS-SA-2023-1953)
  • 673051 EulerOS Security Update for gnutls (EulerOS-SA-2023-1975)
  • 673138 EulerOS Security Update for gnutls (EulerOS-SA-2023-2291)
  • 673155 EulerOS Security Update for gnutls (EulerOS-SA-2023-2267)
  • 691059 Free Berkeley Software Distribution (FreeBSD) Security Update for gnutls (0a7a5dfb-aba4-11ed-be2c-001cc0382b2f)
  • 691232 Free Berkeley Software Distribution (FreeBSD) Security Update for mysql (759a5599-3ce8-11ee-a0d1-84a93843eb75)
  • 753740 SUSE Enterprise Linux Security Update for gnutls (SUSE-SU-2023:0610-1)
  • 755523 SUSE Enterprise Linux Security Update for gnutls (SUSE-SU-2023:4952-1)
  • 905557 Common Base Linux Mariner (CBL-Mariner) Security Update for gnutls (13574)
  • 905565 Common Base Linux Mariner (CBL-Mariner) Security Update for gnutls (13568)
  • 906543 Common Base Linux Mariner (CBL-Mariner) Security Update for gnutls (13574-1)
  • 906601 Common Base Linux Mariner (CBL-Mariner) Security Update for gnutls (13574-3)
  • 906689 Common Base Linux Mariner (CBL-Mariner) Security Update for gnutls (13568-3)
  • 906775 Common Base Linux Mariner (CBL-Mariner) Security Update for gnutls (13574-5)
  • 940958 AlmaLinux Security Update for gnutls (ALSA-2023:1141)
  • 940969 AlmaLinux Security Update for gnutls (ALSA-2023:1569)
  • 960668 Rocky Linux Security Update for gnutls (RLSA-2023:1141)
  • 960894 Rocky Linux Security Update for gnutls (RLSA-2023:1569)

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