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Vulnerability details: VCID-hehk-phng-n3bu
Vulnerability ID VCID-hehk-phng-n3bu
Aliases CVE-2023-0361
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 6.7
Risk 3.4
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-1300 Improper Protection of Physical Side Channels
CWE-203 Observable Discrepancy
System Score Found at
cvssv3 7.4 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-0361.json
epss 0.02542 https://api.first.org/data/v1/epss?cve=CVE-2023-0361
epss 0.02943 https://api.first.org/data/v1/epss?cve=CVE-2023-0361
epss 0.02943 https://api.first.org/data/v1/epss?cve=CVE-2023-0361
epss 0.02943 https://api.first.org/data/v1/epss?cve=CVE-2023-0361
epss 0.02943 https://api.first.org/data/v1/epss?cve=CVE-2023-0361
epss 0.02943 https://api.first.org/data/v1/epss?cve=CVE-2023-0361
epss 0.02943 https://api.first.org/data/v1/epss?cve=CVE-2023-0361
epss 0.02943 https://api.first.org/data/v1/epss?cve=CVE-2023-0361
epss 0.02943 https://api.first.org/data/v1/epss?cve=CVE-2023-0361
epss 0.02943 https://api.first.org/data/v1/epss?cve=CVE-2023-0361
epss 0.02943 https://api.first.org/data/v1/epss?cve=CVE-2023-0361
epss 0.02943 https://api.first.org/data/v1/epss?cve=CVE-2023-0361
epss 0.02943 https://api.first.org/data/v1/epss?cve=CVE-2023-0361
epss 0.02943 https://api.first.org/data/v1/epss?cve=CVE-2023-0361
epss 0.02943 https://api.first.org/data/v1/epss?cve=CVE-2023-0361
epss 0.02943 https://api.first.org/data/v1/epss?cve=CVE-2023-0361
cvssv3.1 5.9 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 7.4 https://nvd.nist.gov/vuln/detail/CVE-2023-0361
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-0361.json
https://access.redhat.com/security/cve/CVE-2023-0361
https://api.first.org/data/v1/epss?cve=CVE-2023-0361
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-0361
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/tlsfuzzer/tlsfuzzer/pull/679
https://gitlab.com/gnutls/gnutls/-/issues/1050
https://lists.debian.org/debian-lts-announce/2023/02/msg00015.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UFIA3X4IZ3CW7SRQ2UHNHNPMRIAWF2FI/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WS4KVDOG6QTALWHC2QE4Y7VPDRMLTRWQ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z634YBXAJ5VLDI62IOPBVP5K6YFHAWCY/
https://security.netapp.com/advisory/ntap-20230324-0005/
https://security.netapp.com/advisory/ntap-20230725-0005/
2162596 https://bugzilla.redhat.com/show_bug.cgi?id=2162596
cpe:2.3:a:gnu:gnutls:3.6.8-11.el8_2:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:gnu:gnutls:3.6.8-11.el8_2:*:*:*:*:*:*:*
cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
cpe:2.3:a:netapp:converged_systems_advisor_agent:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:netapp:converged_systems_advisor_agent:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
CVE-2023-0361 https://nvd.nist.gov/vuln/detail/CVE-2023-0361
RHSA-2023:1141 https://access.redhat.com/errata/RHSA-2023:1141
RHSA-2023:1200 https://access.redhat.com/errata/RHSA-2023:1200
RHSA-2023:1569 https://access.redhat.com/errata/RHSA-2023:1569
RHSA-2023:3361 https://access.redhat.com/errata/RHSA-2023:3361
USN-5901-1 https://usn.ubuntu.com/5901-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-0361.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2023-0361
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.84874
EPSS Score 0.02542
Published At Aug. 16, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:28:51.744660+00:00 Alpine Linux Importer Import https://secdb.alpinelinux.org/v3.17/main.json 37.0.0