CVE-2021-36647MediumMicrosoft CVSS 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Microsoft security update for CVE-2021-36647

Published
January 23, 2023
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2021-36647 →

📋 Microsoft's advisory

EchelonGraph does not copy Microsoft's advisory page: its FAQ and remediation text are not shown here. Read the advisory on https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-36647. This page also shows what EchelonGraph holds for CVE-2021-36647, with the description from its CVE record, which the CVE Numbering Authority that assigned the CVE wrote: for a CVE Microsoft assigned, often in the words of Microsoft's own advisory.

🎯 Affected products9

  • cbl2 hvloader 1.0.1-5 on CBL Mariner 2.0
  • cbl2 hvloader 1.0.1-5 on CBL-Mariner 2.0
  • fluent-bit-2.0.9-1.cm2.aarch64.rpm on CBL Mariner 2.0 ARM
  • fluent-bit-2.0.9-1.cm2.x86_64.rpm on CBL Mariner 2.0 x64
  • fluent-bit-debuginfo-2.0.9-1.cm2.aarch64.rpm on CBL Mariner 2.0 ARM
  • fluent-bit-debuginfo-2.0.9-1.cm2.x86_64.rpm on CBL Mariner 2.0 x64
  • fluent-bit-devel-2.0.9-1.cm2.aarch64.rpm on CBL Mariner 2.0 ARM
  • fluent-bit-devel-2.0.9-1.cm2.x86_64.rpm on CBL Mariner 2.0 x64
  • hvloader-1.0.1-6.cm2.x86_64.rpm on CBL Mariner 2.0 x64

✅ Updates Microsoft lists: 2 updates

2 rows: one per KB article or update, update type and fixed build. Their details are on Microsoft's advisory.

KB articleUpdateFixed build
—Security Update2.0.9-1
—Security Update1.0.1-6

🧭 EchelonGraph on CVE-2021-36647

EchelonGraph score
4.7 MEDIUM
CISA KEV
Not listed
Fix status
A fix is available — apply it.

Description from the CVE record (CVE.org), as published by its numbering authority

Use of a Broken or Risky Cryptographic Algorithm in the function mbedtls_mpi_exp_mod() in lignum.c in Mbed TLS Mbed TLS all versions before 3.0.0, 2.27.0 or 2.16.11 allows attackers with access to precise enough timing and memory access information (typically an untrusted operating system attacking a secure enclave such as SGX or the TrustZone secure world) to recover the private keys used in RSA.

Published by MITRE Corporation, the CVE Numbering Authority that assigned CVE-2021-36647, in its CVE record at CVE.org; reused under the CVE Program's Terms of Use (its licence and MITRE's copyright notice are in our Terms of Service).

🔗 References (2)