CVE-2020-13844
published 2020-06-08CVE-2020-13844: Arm Armv8-A core implementations utilizing speculative execution past unconditional changes in control flow may allow unauthorized disclosure of information to…
PriorityP424medium5.5CVSS 3.1
AVLACLPRLUINSUCHINAN
EPSS
0.50%
40.3th percentile
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."
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| opensuse | leap | — | — |
| opensuse | leap | — | — |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
nvdv2.02.1LOWAV:L/AC:L/Au:N/C:P/I:N/A:N
osv5.5MEDIUM
vendor_redhat5.5MEDIUM
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GHSA
GHSA-jwjh-w2wp-2gvv: Arm Armv8-A core implementations utilizing speculative execution past unconditional changes in control flow may allow unauthorized disclosure of infor
ghsa_unreviewed·2022-05-24
CVE-2020-13844 [LOW] CWE-200 GHSA-jwjh-w2wp-2gvv: Arm Armv8-A core implementations utilizing speculative execution past unconditional changes in control flow may allow unauthorized disclosure of infor
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."
OSV
CVE-2020-13844: In exception handling functions of multiple files, there is a possible info leak due to side channel information disclosure
osv·2022-04-01
CVE-2020-13844 CVE-2020-13844: In exception handling functions of multiple files, there is a possible info leak due to side channel information disclosure
In exception handling functions of multiple files, there is a possible info leak due to side channel information disclosure. This could lead to local information disclosure from the kernel with no additional execution privileges needed. User interaction is not needed for exploitation.
OSV
CVE-2020-13844: Arm Armv8-A core implementations utilizing speculative execution past unconditional changes in control flow may allow unauthorized disclosure of infor
osv·2020-06-08·CVSS 5.5
CVE-2020-13844 [MEDIUM] CVE-2020-13844: Arm Armv8-A core implementations utilizing speculative execution past unconditional changes in control flow may allow unauthorized disclosure of infor
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."
Red Hat
kernel: ARM straight-line speculation vulnerability
vendor_redhat·2020-06-07·CVSS 5.5
CVE-2020-13844 [MEDIUM] CWE-200 kernel: ARM straight-line speculation vulnerability
kernel: ARM straight-line speculation vulnerability
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."
A new speculative side-channel vulnerability was found that affects the ARM processor's code, 'Straight-line speculation.' This flaw allows a local attacker to infer cache contents through measuring timing access. The highest threat from this vulnerability is to confidentiality.
Mitigation: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widesp
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2020-13844 kernel: ARM straight-line speculation vulnerability [fedora-all]
bugzilla·2020-06-18·CVSS 5.5
CVE-2020-13844 [MEDIUM] CVE-2020-13844 kernel: ARM straight-line speculation vulnerability [fedora-all]
CVE-2020-13844 kernel: ARM straight-line speculation vulnerability [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported versio
Bugzilla
CVE-2020-13844 kernel: ARM straight-line speculation vulnerability
bugzilla·2020-06-18·CVSS 5.5
CVE-2020-13844 [MEDIUM] CVE-2020-13844 kernel: ARM straight-line speculation vulnerability
CVE-2020-13844 kernel: ARM straight-line speculation vulnerability
A new novel spectulative side channel vulnerability that affects ARM processors code named "Straight line speculation" has been discovered.
Some versions of the ARM processors may speculative execute instructions after a branch in control flow (such as RET, BR, BLR assembly instructions). If the codepath contains a "Speculative Revelation" style gadget which can affect internal core cache states which lead to the ability to infer cache contents similar to previous spectre attacks through analysing instruction execution time.
Discussion:
External References:
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13844
http://lists.llvm.org/pipermail/llvm-dev/2020-June/142109.html
---
Created kernel tracking bugs for
http://lists.llvm.org/pipermail/llvm-dev/2020-June/142109.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00039.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00040.htmlhttps://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerabilityhttps://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability/downloads/straight-line-speculationhttps://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability/frequently-asked-questionshttps://gcc.gnu.org/pipermail/gcc-patches/2020-June/547520.htmlhttp://lists.llvm.org/pipermail/llvm-dev/2020-June/142109.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00039.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00040.htmlhttps://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerabilityhttps://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability/downloads/straight-line-speculationhttps://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability/frequently-asked-questionshttps://gcc.gnu.org/pipermail/gcc-patches/2020-June/547520.html
2020-06-08
Published