CVE-2018-16869

Severity: medium (CVSS 5.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-12-03 · updated 2026-06-17
Weakness: CWE-203

Description

A Bleichenbacher type side-channel based padding oracle attack was found in the way nettle handles endian conversion 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 flaw extract plaintext or in some cases downgrade any TLS connections to a vulnerable server.

Affected products

[UNKNOWN] nettle: through 3.4

References

http://cat.eyalro.net/
http://www.securityfocus.com/bid/106092
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16869
http://cat.eyalro.net/
http://www.securityfocus.com/bid/106092
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16869

Get alerted when CVE-2018-16869 or the next vulnerability affects your stack