Home/CVE/Arm Armv8-A core implementations utilizing speculative execution past unconditional changes in control flow may allow un
CVE

CVE-2020-13844

Arm Armv8-A core implementations utilizing speculative execution past unconditional changes in control flow may allow un

Arm Armv8-A core implementations utilizing speculative execution past unconditional changes in control flow may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis, aka "straight-line speculation.".

MEDIUM · CVSS 5.5 EPSS 0.00137
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-203Observable Discrepancy
▤

Affected Products & Versions

8
arm cortex-a32 firmwareall versions
arm cortex-a35 firmwareall versions
arm cortex-a53 firmwareall versions
arm cortex-a57 firmwareall versions
arm cortex-a72 firmwareall versions
arm cortex-a73 firmwareall versions
arm cortex-a34 firmwareall versions
opensuse leapall versions
▣

Scoring & Timeline

5.5
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD08 Jun 2020 · 11:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
⚑

Vendor Advisories

10
suse-csafopenSUSE-SU-2024:10702-1
suse-csafopenSUSE-SU-2024:10703-1
suse-csafSUSE-SU-2023:3662-1
suse-csafopenSUSE-SU-2020:2300-1
suse-csafopenSUSE-SU-2020:2301-1
🔗

References & Sources

7
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.llvm.org/pipermail/llvm-dev/2020-June/142109.htmlMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00039.htmlMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00040.htmlMailing ListThird Party Advisory
https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerabilityVendor Advisory
https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability/downloads/straight-line-speculationVendor Advisory
https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability/frequently-asked-questionsVendor Advisory
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