CVE Feed

    Dashboard / CVE / CVE-2018-3646

    CVE-2018-3646

    Systems with microprocessors utilizing speculative execution and address translations may allow unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access with guest OS privilege via a terminal page fault and a side-channel analysis.

    Published:Aug 14, 2018
    Last Modified:May 29, 2026
    EPS:Aug 14, 2018
    EPSS Score:0.03877
    CVSS Score:5.6

    Affected Products

    Vendor
    Intel
    Product
    Core I3
    Vendor
    Intel
    Product
    Core I5
    Vendor
    Intel
    Product
    Core I7
    Vendor
    Intel
    Product
    Core M
    Vendor
    Intel
    Product
    Core M3
    Vendor
    Intel
    Product
    Core M5
    Vendor
    Intel
    Product
    Core M7
    Vendor
    Intel
    Product
    Xeon
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Mrg
    Vendor
    Redhat
    Product
    Rhel Aus
    Vendor
    Redhat
    Product
    Rhel E4s
    Vendor
    Redhat
    Product
    Rhel Els
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Extras Rt
    Vendor
    Redhat
    Product
    Rhel Tus

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-116 Excavation
    CAPEC-13 Subverting Environment Variable Values
    CAPEC-169 Footprinting
    CAPEC-22 Exploiting Trust in Client
    CAPEC-224 Fingerprinting
    CAPEC-285 ICMP Echo Request Ping
    CAPEC-287 TCP SYN Scan
    CAPEC-290 Enumerate Mail Exchange (MX) Records
    CAPEC-291 DNS Zone Transfers
    CAPEC-292 Host Discovery
    CAPEC-293 Traceroute Route Enumeration
    CAPEC-294 ICMP Address Mask Request
    CAPEC-295 Timestamp Request
    CAPEC-296 ICMP Information Request
    CAPEC-297 TCP ACK Ping
    CAPEC-298 UDP Ping
    CAPEC-299 TCP SYN Ping
    CAPEC-300 Port Scanning
    CAPEC-301 TCP Connect Scan
    CAPEC-302 TCP FIN Scan
    CAPEC-303 TCP Xmas Scan
    CAPEC-304 TCP Null Scan
    CAPEC-305 TCP ACK Scan
    CAPEC-306 TCP Window Scan
    CAPEC-307 TCP RPC Scan
    CAPEC-308 UDP Scan
    CAPEC-309 Network Topology Mapping
    CAPEC-310 Scanning for Vulnerable Software
    CAPEC-312 Active OS Fingerprinting
    CAPEC-313 Passive OS Fingerprinting
    CAPEC-317 IP ID Sequencing Probe
    CAPEC-318 IP 'ID' Echoed Byte-Order Probe
    CAPEC-319 IP (DF) 'Don't Fragment Bit' Echoing Probe
    CAPEC-320 TCP Timestamp Probe
    CAPEC-321 TCP Sequence Number Probe
    CAPEC-322 TCP (ISN) Greatest Common Divisor Probe
    CAPEC-323 TCP (ISN) Counter Rate Probe
    CAPEC-324 TCP (ISN) Sequence Predictability Probe
    CAPEC-325 TCP Congestion Control Flag (ECN) Probe
    CAPEC-326 TCP Initial Window Size Probe
    CAPEC-327 TCP Options Probe
    CAPEC-328 TCP 'RST' Flag Checksum Probe
    CAPEC-329 ICMP Error Message Quoting Probe
    CAPEC-330 ICMP Error Message Echoing Integrity Probe
    CAPEC-37 Retrieve Embedded Sensitive Data
    CAPEC-472 Browser Fingerprinting
    CAPEC-497 File Discovery
    CAPEC-508 Shoulder Surfing
    CAPEC-573 Process Footprinting
    CAPEC-574 Services Footprinting
    CAPEC-575 Account Footprinting
    CAPEC-576 Group Permission Footprinting
    CAPEC-577 Owner Footprinting
    CAPEC-59 Session Credential Falsification through Prediction
    CAPEC-60 Reusing Session IDs (aka Session Replay)
    CAPEC-616 Establish Rogue Location
    CAPEC-643 Identify Shared Files/Directories on System
    CAPEC-646 Peripheral Footprinting
    CAPEC-651 Eavesdropping
    CAPEC-79 Using Slashes in Alternate Encoding

    Related CVEs

    CVE-2021-33107 (CVSS 4.6) — Insufficiently protected credentials in USB provisioning for Intel(R) AMT SDK before version 16.0.3, Intel(R) …
    CVE-2020-24491 (CVSS 4.4) — Debug message containing addresses of memory transactions in some Intel(R) 10th Generation Core Processors sup…
    CVE-2020-0583 (CVSS 8.8) — Improper access control in the subsystem for Intel(R) Smart Sound Technology may allow an authenticated user t…
    CVE-2018-12202 (CVSS 6.7) — Privilege escalation vulnerability in Platform Sample/ Silicon Reference firmware for 8th Generation Intel(R) …
    CVE-2018-12205 (CVSS 6.8) — Improper certificate validation in Platform Sample/ Silicon Reference firmware for 8th Generation Intel(R) Cor…
    CVE-2018-12201 (CVSS 6.7) — Buffer overflow vulnerability in Platform Sample / Silicon Reference firmware for 8th Generation Intel(R) Core…
    CVE-2018-12203 (CVSS 6.7) — Denial of service vulnerability in Platform Sample/ Silicon Reference firmware for 8th Generation Intel Core P…
    CVE-2018-12169 (CVSS 7.6) — Platform sample code firmware in 4th Generation Intel Core Processor, 5th Generation Intel Core Processor, 6th…
    CVE-2018-3615 (CVSS 7.3) — Systems with microprocessors utilizing speculative execution and Intel software guard extensions (Intel SGX) m…
    CVE-2018-3620 (CVSS 5.6) — Systems with microprocessors utilizing speculative execution and address translations may allow unauthorized d…

    References

    http://support.lenovo.com/us/en/solutions/LEN-24163
    http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20180815-01-cpu-en
    http://www.securityfocus.com/bid/105080
    http://www.securitytracker.com/id/1041451
    http://www.securitytracker.com/id/1042004
    http://www.vmware.com/security/advisories/VMSA-2018-0020.html
    http://xenbits.xen.org/xsa/advisory-273.html
    https://access.redhat.com/errata/RHSA-2018:2384
    https://access.redhat.com/errata/RHSA-2018:2387
    https://access.redhat.com/errata/RHSA-2018:2388
    https://access.redhat.com/errata/RHSA-2018:2389
    https://access.redhat.com/errata/RHSA-2018:2390
    https://access.redhat.com/errata/RHSA-2018:2391
    https://access.redhat.com/errata/RHSA-2018:2392
    https://access.redhat.com/errata/RHSA-2018:2393
    https://access.redhat.com/errata/RHSA-2018:2394
    https://access.redhat.com/errata/RHSA-2018:2395
    https://access.redhat.com/errata/RHSA-2018:2396
    https://access.redhat.com/errata/RHSA-2018:2402
    https://access.redhat.com/errata/RHSA-2018:2403
    https://access.redhat.com/errata/RHSA-2018:2404
    https://access.redhat.com/errata/RHSA-2018:2602
    https://access.redhat.com/errata/RHSA-2018:2603
    https://cert-portal.siemens.com/productcert/pdf/ssa-254686.pdf
    https://cert-portal.siemens.com/productcert/pdf/ssa-608355.pdf
    https://foreshadowattack.eu/
    https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0
    https://lists.debian.org/debian-lts-announce/2018/08/msg00029.html
    https://lists.debian.org/debian-lts-announce/2018/09/msg00017.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V4UWGORQWCENCIF2BHWUEF2ODBV75QS2/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XRFKQWYV2H4BV75CUNGCGE5TNVQCLBGZ/
    https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV180018
    https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0010
    https://security.FreeBSD.org/advisories/FreeBSD-SA-18:09.l1tf.asc
    https://security.gentoo.org/glsa/201810-06
    https://security.netapp.com/advisory/ntap-20180815-0001/
    https://software.intel.com/security-software-guidance/software-guidance/l1-terminal-fault
    https://support.f5.com/csp/article/K31300402
    https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03874en_us
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180814-cpusidechannel
    https://usn.ubuntu.com/3740-1/
    https://usn.ubuntu.com/3740-2/
    https://usn.ubuntu.com/3741-1/
    https://usn.ubuntu.com/3741-2/
    https://usn.ubuntu.com/3742-1/
    https://usn.ubuntu.com/3742-2/
    https://usn.ubuntu.com/3756-1/
    https://usn.ubuntu.com/3823-1/
    https://www.debian.org/security/2018/dsa-4274
    https://www.debian.org/security/2018/dsa-4279
    https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00161.html
    https://www.kb.cert.org/vuls/id/982149
    https://www.oracle.com/security-alerts/cpujul2020.html
    https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
    https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
    https://www.synology.com/support/security/Synology_SA_18_45
    http://support.lenovo.com/us/en/solutions/LEN-24163
    http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20180815-01-cpu-en
    http://www.securityfocus.com/bid/105080
    http://www.securitytracker.com/id/1041451
    http://www.securitytracker.com/id/1042004
    http://www.vmware.com/security/advisories/VMSA-2018-0020.html
    http://xenbits.xen.org/xsa/advisory-273.html
    https://access.redhat.com/errata/RHSA-2018:2384
    https://access.redhat.com/errata/RHSA-2018:2387
    https://access.redhat.com/errata/RHSA-2018:2388
    https://access.redhat.com/errata/RHSA-2018:2389
    https://access.redhat.com/errata/RHSA-2018:2390
    https://access.redhat.com/errata/RHSA-2018:2391
    https://access.redhat.com/errata/RHSA-2018:2392
    https://access.redhat.com/errata/RHSA-2018:2393
    https://access.redhat.com/errata/RHSA-2018:2394
    https://access.redhat.com/errata/RHSA-2018:2395
    https://access.redhat.com/errata/RHSA-2018:2396
    https://access.redhat.com/errata/RHSA-2018:2402
    https://access.redhat.com/errata/RHSA-2018:2403
    https://access.redhat.com/errata/RHSA-2018:2404
    https://access.redhat.com/errata/RHSA-2018:2602
    https://access.redhat.com/errata/RHSA-2018:2603
    https://cert-portal.siemens.com/productcert/pdf/ssa-254686.pdf
    https://cert-portal.siemens.com/productcert/pdf/ssa-608355.pdf
    https://foreshadowattack.eu/
    https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0
    https://lists.debian.org/debian-lts-announce/2018/08/msg00029.html
    https://lists.debian.org/debian-lts-announce/2018/09/msg00017.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V4UWGORQWCENCIF2BHWUEF2ODBV75QS2/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XRFKQWYV2H4BV75CUNGCGE5TNVQCLBGZ/
    https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV180018
    https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0010
    https://security.FreeBSD.org/advisories/FreeBSD-SA-18:09.l1tf.asc
    https://security.gentoo.org/glsa/201810-06
    https://security.netapp.com/advisory/ntap-20180815-0001/
    https://software.intel.com/security-software-guidance/software-guidance/l1-terminal-fault
    https://support.f5.com/csp/article/K31300402
    https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03874en_us
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180814-cpusidechannel
    https://usn.ubuntu.com/3740-1/
    https://usn.ubuntu.com/3740-2/
    https://usn.ubuntu.com/3741-1/
    https://usn.ubuntu.com/3741-2/
    https://usn.ubuntu.com/3742-1/
    https://usn.ubuntu.com/3742-2/
    https://usn.ubuntu.com/3756-1/
    https://usn.ubuntu.com/3823-1/
    https://www.debian.org/security/2018/dsa-4274
    https://www.debian.org/security/2018/dsa-4279
    https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00161.html
    https://www.kb.cert.org/vuls/id/982149
    https://www.oracle.com/security-alerts/cpujul2020.html
    https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
    https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
    https://www.synology.com/support/security/Synology_SA_18_45

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High