VulnerabilityModified

CVE-2019-12904

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.

MEDIUM 5.9EPSS 2.06%

Does this matter?

Lower severity and a low EPSS score (2.06%). Track it; it rarely justifies an emergency change on its own.

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

CVSS 3.1: 5.9 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS: 2.06% probability · 80th percentile
CISA KEV: Not listed
Weakness: CWE-668
Affected: gnupg/libgcrypt · opensuse/leap
Source: cve@mitre.org

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

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.