Microsoft security update for CVE-2023-6237
🔗 CVE IDs covered (1)
📋 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-2023-6237. This page also shows what EchelonGraph holds for CVE-2023-6237, 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 products15
- azl3 cloud-hypervisor-cvm 38.0.72-2 on Azure Linux 3.0
- azl3 cloud-hypervisor-cvm 38.0.72.2-1 on Azure Linux 3.0
- azl3 nodejs 20.10.0-2 on Azure Linux 3.0
- azl3 nodejs 20.14.0-1 on Azure Linux 3.0
- azl3 openssl 3.1.4-9 on Azure Linux 3.0
- azl3 openssl 3.3.0-1 on Azure Linux 3.0
- cbl2 cloud-hypervisor-cvm 38.0.72-1 on CBL Mariner 2.0
- cbl2 cloud-hypervisor-cvm 38.0.72-1 on CBL-Mariner 2.0
- cbl2 cloud-hypervisor-cvm 38.0.72.2-1 on CBL Mariner 2.0
- cbl2 hvloader 1.0.1-5 on CBL Mariner 2.0
- cbl2 hvloader 1.0.1-5 on CBL-Mariner 2.0
- cbl2 hvloader 1.0.1-6 on CBL Mariner 2.0
- cbl2 nodejs18 18.18.2-7 on CBL Mariner 2.0
- cbl2 nodejs18 18.18.2-7 on CBL-Mariner 2.0
- cbl2 nodejs18 18.20.2-1 on CBL Mariner 2.0
✅ Updates Microsoft lists: 6 updates
6 rows: one per KB article or update, update type and fixed build. Their details are on Microsoft's advisory.
| KB article | Update | Fixed build |
|---|---|---|
| — | Security Update | 3.3.0-1 |
| — | Security Update | 20.14.0-1 |
| — | Security Update | 18.20.2-1 |
| — | Security Update | 38.0.72.2-1 |
| — | Security Update | 1.0.1-6 |
| — | Security Update | - |
🧭 EchelonGraph on CVE-2023-6237
- EchelonGraph score
- 5.9 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
Issue summary: Checking excessively long invalid RSA public keys may take a long time. Impact summary: Applications that use the function EVP_PKEY_public_check() to check RSA public keys may experience long delays. Where the key that is being checked has been obtained from an untrusted source this may lead to a Denial of Service. When function EVP_PKEY_public_check() is called on RSA public keys, a computation is done to confirm that the RSA modulus, n, is composite. For valid RSA keys, n is a product of two or more large primes and this computation completes quickly. However, if n is an overly large prime, then this computation would take a long time. An application that calls EVP_PKEY_public_check() and supplies an RSA key obtained from an untrusted source could be vulnerable to a Denial of Service attack. The function EVP_PKEY_public_check() is not called from other OpenSSL functions however it is called from the OpenSSL pkey command line application. For that reason that application is also vulnerable if used with the '-pubin' and '-check' options on untrusted data. The OpenSSL SSL/TLS implementation is not affected by this issue. The OpenSSL 3.0 and 3.1 FIPS providers are affected by this issue.
Published by OpenSSL Software Foundation, the CVE Numbering Authority that assigned CVE-2023-6237, 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).