Synopsis
The remote Red Hat host is missing one or more security updates.
Description
The remote Redhat Enterprise Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2020:2680 advisory.
Security Fix(es):
* hw: Special Register Buffer Data Sampling (SRBDS) (CVE-2020-0543)
* hw: L1D Cache Eviction Sampling (CVE-2020-0549)
* hw: Vector Register Data Sampling (CVE-2020-0548)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Bug Fix(es):
* Update Intel CPU microcode to microcode-20200609 release:
- Update of 06-2d-06/0x6d (SNB-E/EN/EP C1/M0) microcode from revision 0x61f up to 0x621;
- Update of 06-2d-07/0x6d (SNB-E/EN/EP C2/M1) microcode from revision 0x718 up to 0x71a;
- Update of 06-3c-03/0x32 (HSW C0) microcode from revision 0x27 up to 0x28;
- Update of 06-3d-04/0xc0 (BDW-U/Y E0/F0) microcode from revision 0x2e up to 0x2f;
- Update of 06-45-01/0x72 (HSW-U C0/D0) microcode from revision 0x25 up to 0x26;
- Update of 06-46-01/0x32 (HSW-H C0) microcode from revision 0x1b up to 0x1c;
- Update of 06-47-01/0x22 (BDW-H/Xeon E3 E0/G0) microcode from revision 0x21 up to 0x22;
- Update of 06-4e-03/0xc0 (SKL-U/Y D0) microcode from revision 0xd6 up to 0xdc;
- Update of 06-55-03/0x97 (SKX-SP B1) microcode from revision 0x1000151 up to 0x1000157;
- Update of 06-55-04/0xb7 (SKX-SP H0/M0/U0, SKX-D M1) microcode (in intel-06-55-04/intel-ucode/06-55-04) from revision 0x2000065 up to 0x2006906;
- Update of 06-55-06/0xbf (CLX-SP B0) microcode from revision 0x400002c up to 0x4002f01;
- Update of 06-55-07/0xbf (CLX-SP B1) microcode from revision 0x500002c up to 0x5002f01;
- Update of 06-5e-03/0x36 (SKL-H/S R0/N0) microcode from revision 0xd6 up to 0xdc;
- Update of 06-7e-05/0x80 (ICL-U/Y D1) microcode from revision 0x46 up to 0x78;
- Update of 06-8e-09/0x10 (AML-Y22 H0) microcode from revision 0xca up to 0xd6;
- Update of 06-8e-09/0xc0 (KBL-U/Y H0) microcode from revision 0xca up to 0xd6;
- Update of 06-8e-0a/0xc0 (CFL-U43e D0) microcode from revision 0xca up to 0xd6;
- Update of 06-8e-0b/0xd0 (WHL-U W0) microcode from revision 0xca up to 0xd6;
- Update of 06-8e-0c/0x94 (AML-Y42 V0, CML-Y42 V0, WHL-U V0) microcode from revision 0xca up to 0xd6;
- Update of 06-9e-09/0x2a (KBL-G/H/S/X/Xeon E3 B0) microcode from revision 0xca up to 0xd6;
- Update of 06-9e-0a/0x22 (CFL-H/S/Xeon E3 U0) microcode from revision 0xca up to 0xd6;
- Update of 06-9e-0b/0x02 (CFL-S B0) microcode from revision 0xca up to 0xd6;
- Update of 06-9e-0c/0x22 (CFL-H/S P0) microcode from revision 0xca up to 0xd6;
- Update of 06-9e-0d/0x22 (CFL-H R0) microcode from revision 0xca up to 0xd6.
* Do not update 06-4e-03 (SKL-U/Y) and 06-5e-03 (SKL-H/S/Xeon E3 v5) to revision 0xdc, use 0xd6 by default.
* Enable 06-2d-07 (SNB-E/EN/EP) caveat by default.
* Enable 06-55-04 (SKL-SP/X/W) caveat by default.
* Avoid find being SIGPIPE'd on early grep -q exit in the dracut script.
* Re-generate initramfs not only for the currently running kernel, but for several recently installed kernels as well.
* Change the URL in the intel-microcode2ucode.8 to point to the GitHub repository since the microcode download section at Intel Download Center does not exist anymore.
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the affected microcode_ctl package.
Plugin Details
File Name: redhat-RHSA-2020-2680.nasl
Agent: unix
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
Vendor
Vendor Severity: Moderate
Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:redhat:rhel_tus:7.3, cpe:/o:redhat:rhel_e4s:7.3, p-cpe:/a:redhat:enterprise_linux:microcode_ctl, cpe:/o:redhat:rhel_aus:7.3
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 6/23/2020
Vulnerability Publication Date: 1/28/2020