CVE-2018-16868

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 process on the same physical core as the victim process, could use this to extract plaintext or in some cases downgrade any TLS connections to a vulnerable server.

Score

CVSS 3.1 5.6 Medium

Status

Modified - secalert@redhat.com

Published

2018-12-03

Last modified

2024-08-05

Weaknesses

CWE-203

Affected products

• Gnutls (Gnu)
• Gnutls (Unknown)

References

• http://cat.eyalro.net/
• http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00017.html
• http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00068.html
• http://www.securityfocus.com/bid/106080
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16868