Security Bulletin: IBM Security QRadar Packet Capture is vulnerable to 3RD PARTY CPU hardware utilizing speculative execution cache timing side-channel analysis known as Variant 4 or SpectreNG (CVE-2018-3639, CVE-2018-3640)

Summary

Speculative execution is a technique used by many modern processors to improve performance by predicting which instructions may be executed based on past execution history. An attacker with local user access may be able to utilize sequences of speculative execution to perform a cache timing side-channel analysis.

Vulnerability Details

CVEID: CVE-2018-3639
**Description:**Multiple Intel CPU’s could allow a local attacker to obtain sensitive information, caused by utilizing sequences of speculative execution of memory reads before the addresses of all prior memory writes are known. By conducting targeted cache side-channel attacks, an attacker could exploit this vulnerability to bypass security restrictions and gain read access to privileged memory. Note: This vulnerability is the Speculative Store Bypass (SSB), also known as Variant 4 or “SpectreNG”.
**CVSS Base Score:**4.3
**CVSS Temporal Score:**For the current score, see: _ <https://exchange.xforce.ibmcloud.com/vulnerabilities/143569&gt; _
**CVSS Environmental Score:***Undefined
**CVSS Vector:**CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

CVEID: CVE-2018-3640
**Description:**Multiple Intel CPU’s could allow a local attacker to obtain sensitive information, caused by utilizing sequences of speculative execution that perform speculative reads of system registers. By conducting targeted cache side-channel attacks, an attacker could exploit this vulnerability to determine the values stored in system registers. Note: This vulnerability is the Rogue System Register Read (RSRE), also known as Variant 3a.
**CVSS Base Score:**4.3
CVSS Temporal Score: For the current score, see: https://exchange.xforce.ibmcloud.com/vulnerabilities/143570
**CVSS Environmental Score:***Undefined
**CVSS Vector:**CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

Affected Products and Versions

• IBM Security QRadar Packet Capture 7.20 to 7.2.8 Patch 4
• IBM Security QRadar Packet Capture 7.3.0 to 7.3.1 Patch 1

Remediation/Fixes

• _ QRadar Packet Capture 7.3.1 Patch 2 _
• _ QRadar Packet Capture 7.2.8 Patch 5 _

Workarounds and Mitigations

Please note in order to mitigate CVE-2018-3639 and CVE-2018-3640 a uEFI microcode firmware update is required on all appliances along with the Kernel update that is included in the QRadar Packet Capture Patches above. Please see the links below for available microcode updates.

For Lenovo M4 Appliance Firmware using USB drive installations, see:
2U USB: Qradar_2U_M4_MT5466_xx05_xx28_QIF_PCAP_Firmware_Update_5.2.0

For Lenovo Appliance M4 Firmware using ISO/IMM installations, see:
2U ISO: Qradar_ISO_2U_M4_MT5466_xx05_xx28_QIF_PCAP_Firmware_Update_5.2.0

For Dell Appliances please get the latest BIOS for your server from https://support.dell.com .