CVE-2019-12904

Name: CVE-2019-12904
Creator: NVD / NIST
Published: 2019-06-20T00:15:10.667+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.9/10EPSS 2.06%

Last modified Jun 17, 2026

CVE-2019-12904 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel attack because physical addresses are available to other processes. (The C implementation is used on platforms where an assembly-language implementation is unavailable.) NOTE: the vendor's position is that the issue report cannot be validated because there is no description of an attack. EPSS estimates a 2.06% chance of exploitation in the next 30 days.

Description

In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel attack because physical addresses are available to other processes. (The C implementation is used on platforms where an assembly-language implementation is unavailable.) NOTE: the vendor's position is that the issue report cannot be validated because there is no description of an attack

Metrics

CVSS 3.1

5.9/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

2.06%

78.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-668

Affected Software

Vendor	Product	Versions
Gnupg	Libgcrypt	1.8.4
Opensuse	Leap	15.0

References

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00049.htmlMailing List, Third Party Advisory
https://dev.gnupg.org/T4541Third Party Advisory
https://github.com/gpg/libgcrypt/commit/a4c561aab1014c3630bc88faf6f5246fee16b020Patch, Third Party Advisory
https://github.com/gpg/libgcrypt/commit/daedbbb5541cd8ecda1459d3b843ea4d92788762Patch, Third Party Advisory
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00049.htmlMailing List, Third Party Advisory
https://dev.gnupg.org/T4541Third Party Advisory
https://github.com/gpg/libgcrypt/commit/a4c561aab1014c3630bc88faf6f5246fee16b020Patch, Third Party Advisory
https://github.com/gpg/libgcrypt/commit/daedbbb5541cd8ecda1459d3b843ea4d92788762Patch, Third Party Advisory
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E

Timeline

Published: Jun 20, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-12904?

How severe is CVE-2019-12904?

CVE-2019-12904 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 2.06% probability of exploitation in the next 30 days.

How do I fix CVE-2019-12904?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-12904?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST