High severity7.4NVD Advisory· Published Feb 15, 2023· Updated Jun 17, 2026
CVE-2023-0361
CVE-2023-0361
Description
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.
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Affected products
27- osv-coords15 versionspkg:rpm/opensuse/gnutls&distro=openSUSE%20Tumbleweedpkg:rpm/almalinux/gnutlspkg:rpm/almalinux/gnutls-c%2B%2Bpkg:rpm/almalinux/gnutls-danepkg:rpm/almalinux/gnutls-develpkg:rpm/almalinux/gnutls-utilspkg:rpm/suse/gnutls&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP4pkg:rpm/opensuse/gnutls&distro=openSUSE%20Leap%2015.4pkg:rpm/suse/gnutls&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2015%20SP3pkg:rpm/suse/gnutls&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/gnutls&distro=SUSE%20Linux%20Enterprise%20Micro%205.2pkg:rpm/suse/gnutls&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/gnutls&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/gnutls&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/gnutls&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1
< 3.7.9-1.2+ 14 more
- (no CPE)range: < 3.7.9-1.2
- (no CPE)range: < 3.7.6-18.el9_1
- (no CPE)range: < 3.7.6-18.el9_1
- (no CPE)range: < 3.7.6-18.el9_1
- (no CPE)range: < 3.7.6-18.el9_1
- (no CPE)range: < 3.7.6-18.el9_1
- (no CPE)range: < 3.7.3-150400.4.27.1
- (no CPE)range: < 3.7.3-150400.4.27.1
- (no CPE)range: < 3.6.7-150200.14.25.2
- (no CPE)range: < 3.6.7-150200.14.25.2
- (no CPE)range: < 3.6.7-150200.14.25.2
- (no CPE)range: < 3.7.3-150400.1.3.1
- (no CPE)range: < 3.6.7-150000.6.50.1
- (no CPE)range: < 3.6.7-150000.6.50.1
- (no CPE)range: < 3.6.7-150000.6.50.1
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
- cpe:2.3:a:netapp:converged_systems_advisor_agent:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
9- github.com/tlsfuzzer/tlsfuzzer/pull/679nvdIssue TrackingPatch
- gitlab.com/gnutls/gnutls/-/issues/1050nvdExploitIssue TrackingVendor Advisory
- access.redhat.com/security/cve/CVE-2023-0361nvdThird Party Advisory
- lists.debian.org/debian-lts-announce/2023/02/msg00015.htmlnvdMailing ListThird Party Advisory
- security.netapp.com/advisory/ntap-20230324-0005/nvdThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UFIA3X4IZ3CW7SRQ2UHNHNPMRIAWF2FI/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WS4KVDOG6QTALWHC2QE4Y7VPDRMLTRWQ/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z634YBXAJ5VLDI62IOPBVP5K6YFHAWCY/nvd
- security.netapp.com/advisory/ntap-20230725-0005/nvd
News mentions
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