title: Gnutls: timing side-channel in the rsa-psk authentication
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.
problem types: Observable Discrepancy
affected:
{
product: GnuTLS
vendor: n/a
versions:
version: 3.8.2, status: unaffected
}
{
vendor: Red Hat
product: Red Hat Enterprise Linux 8
collectionURL: https://access.redhat.com/downloads/content/package-browser/
packageName: gnutls
defaultStatus: affected
versions:
version: 0:3.6.16-8.el8_9, lessThan: *, versionType: rpm, status: unaffected
cpe: [cpe:/o:redhat:enterprise_linux:8::baseos, cpe:/a:redhat:enterprise_linux:8::appstream]
}
{
vendor: Red Hat
product: Red Hat Enterprise Linux 8
collectionURL: https://access.redhat.com/downloads/content/package-browser/
packageName: gnutls
defaultStatus: affected
versions:
version: 0:3.6.16-8.el8_9, lessThan: *, versionType: rpm, status: unaffected
cpe: [cpe:/o:redhat:enterprise_linux:8::baseos, cpe:/a:redhat:enterprise_linux:8::appstream]
}
{
vendor: Red Hat
product: Red Hat Enterprise Linux 8.6 Extended Update Support
collectionURL: https://access.redhat.com/downloads/content/package-browser/
packageName: gnutls
defaultStatus: affected
versions:
version: 0:3.6.16-5.el8_6.2, lessThan: *, versionType: rpm, status: unaffected
cpe: [cpe:/o:redhat:rhel_eus:8.6::baseos, cpe:/a:redhat:rhel_eus:8.6::appstream]
}
{
vendor: Red Hat
product: Red Hat Enterprise Linux 8.8 Extended Update Support
collectionURL: https://access.redhat.com/downloads/content/package-browser/
packageName: gnutls
defaultStatus: affected
versions:
version: 0:3.6.16-7.el8_8.1, lessThan: *, versionType: rpm, status: unaffected
cpe: [cpe:/a:redhat:rhel_eus:8.8::appstream, cpe:/o:redhat:rhel_eus:8.8::baseos]
}
{
vendor: Red Hat
product: Red Hat Enterprise Linux 9
collectionURL: https://access.redhat.com/downloads/content/package-browser/
packageName: gnutls
defaultStatus: affected
versions:
version: 0:3.7.6-23.el9_3.3, lessThan: *, versionType: rpm, status: unaffected
cpe: [cpe:/o:redhat:enterprise_linux:9::baseos, cpe:/a:redhat:enterprise_linux:9::appstream]
}
{
vendor: Red Hat
product: Red Hat Enterprise Linux 9
collectionURL: https://access.redhat.com/downloads/content/package-browser/
packageName: gnutls
defaultStatus: affected
versions:
version: 0:3.7.6-23.el9_3.3, lessThan: *, versionType: rpm, status: unaffected
cpe: [cpe:/o:redhat:enterprise_linux:9::baseos, cpe:/a:redhat:enterprise_linux:9::appstream]
}
{
vendor: Red Hat
product: Red Hat Enterprise Linux 9.2 Extended Update Support
collectionURL: https://access.redhat.com/downloads/content/package-browser/
packageName: gnutls
defaultStatus: affected
versions:
version: 0:3.7.6-21.el9_2.1, lessThan: *, versionType: rpm, status: unaffected
cpe: [cpe:/a:redhat:rhel_eus:9.2::appstream, cpe:/o:redhat:rhel_eus:9.2::baseos]
}
{
vendor: Red Hat
product: Red Hat Enterprise Linux 6
collectionURL: https://access.redhat.com/downloads/content/package-browser/
packageName: gnutls
defaultStatus: unknown
cpes: cpe:/o:redhat:enterprise_linux:6
}
{
vendor: Red Hat
product: Red Hat Enterprise Linux 7
collectionURL: https://access.redhat.com/downloads/content/package-browser/
packageName: gnutls
defaultStatus: unknown
cpes: cpe:/o:redhat:enterprise_linux:7
}
{
product: Fedora 38
vendor: Fedora
collectionURL: https://packages.fedoraproject.org/
packageName: gnutls
defaultStatus: affected
}
{
product: Fedora 37
vendor: Fedora
collectionURL: https://packages.fedoraproject.org/
packageName: gnutls
defaultStatus: affected
}
{
product: Fedora 37
vendor: Fedora
collectionURL: https://packages.fedoraproject.org/
packageName: mingw-gnutls
defaultStatus: unknown
}
metrics:
other: [
content: {'value': 'Moderate', 'namespace': 'https://access.redhat.com/security/updates/classification/'}
type: Red Hat severity rating
]
workarounds: To address the issue found upgrade to GnuTLS 3.8.2 or later versions.