Public Date:
1654929: CVE-2018-16868 gnutls: Bleichenbacher-like side channel leakage in PKCS#1 v1.5 verification and padding oracle verification
A Bleichenbacher type side-channel based padding oracle attack was found in the way gnutls handles verification of RSA decrypted PKCS#1 v1.5 data. An attacker who is able to run a process on the same physical core as the victim process could use this to extract plain text or, in some cases, downgrade any TLS connections to a vulnerable server.

Find out more about CVE-2018-16868 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v3 metrics

NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.

CVSS3 Base Score 4.7
CVSS3 Base Metrics CVSS:3.0/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
Attack Vector Physical
Attack Complexity High
Privileges Required High
User Interaction None
Scope Changed
Confidentiality High
Integrity Impact None
Availability Impact None

Affected Packages State

Platform Package State
Red Hat Virtualization 4 rhvm-appliance Will not fix
Red Hat Virtualization 4 redhat-virtualization-host Will not fix
Red Hat Enterprise Linux 8 gnutls Affected
Red Hat Enterprise Linux 8 mingw-gnutls Affected
Red Hat Enterprise Linux 7 gnutls Will not fix
Red Hat Enterprise Linux 6 gnutls Will not fix
Red Hat Enterprise Linux 5 gnutls Will not fix

External References

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