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gnutls: timing side-channel in the TLS RSA key exchange code

🗓️ 31 May 2023 08:48:59Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 5 Views

Timing side-channel in GnuTLS RSA ClientKeyExchange allows Bleichenbacher-like key recovery to decrypt data.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.6aarch64gnutls3.6.16-5.el8_6.1gnutls-3.6.16-5.el8_6.1.aarch64.rpm
Red Hat Enterprise Linux8.6i686gnutls3.6.16-5.el8_6.1gnutls-3.6.16-5.el8_6.1.i686.rpm
Red Hat Enterprise Linux8.6ppc64legnutls3.6.16-5.el8_6.1gnutls-3.6.16-5.el8_6.1.ppc64le.rpm
Red Hat Enterprise Linux8.6s390xgnutls3.6.16-5.el8_6.1gnutls-3.6.16-5.el8_6.1.s390x.rpm
Red Hat Enterprise Linux8.6x86_64gnutls3.6.16-5.el8_6.1gnutls-3.6.16-5.el8_6.1.x86_64.rpm
Red Hat Enterprise Linux8.6aarch64gnutls-c++3.6.16-5.el8_6.1gnutls-c++-3.6.16-5.el8_6.1.aarch64.rpm
Red Hat Enterprise Linux8.6i686gnutls-c++3.6.16-5.el8_6.1gnutls-c++-3.6.16-5.el8_6.1.i686.rpm
Red Hat Enterprise Linux8.6ppc64legnutls-c++3.6.16-5.el8_6.1gnutls-c++-3.6.16-5.el8_6.1.ppc64le.rpm
Red Hat Enterprise Linux8.6s390xgnutls-c++3.6.16-5.el8_6.1gnutls-c++-3.6.16-5.el8_6.1.s390x.rpm
Red Hat Enterprise Linux8.6x86_64gnutls-c++3.6.16-5.el8_6.1gnutls-c++-3.6.16-5.el8_6.1.x86_64.rpm
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25 Jun 2026 11:02Current
6.8Medium risk
Vulners AI Score6.8
CVSS 3.17.4
EPSS0.01403
CWE-385
gnutls timingtls rsaclient key exchangebleichenbacher stylersa vulnerabilitykey recoverydecryption risknetwork attack
5