QID 357238

Date Published: 2024-02-20

QID 357238: Amazon Linux Security Advisory for Open Secure Sockets Layer (OpenSSL) : ALAS2023-2024-520

A flaw was found in openssl.
When the evp_pkey_public_check() function is called in 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 a large prime, this computation takes 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. (
( CVE-2023-6237) processing a maliciously formatted pkcs12 file may lead openssl to crash leading to a potential denial of service attack the package openssl098e is provided purely for binary compatibility with older amazon linux versions.
It does not receive security updates. (
( CVE-2024-0727)



Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Successful exploitation of this vulnerability could lead to a securitybreach or could affect integrity, availability, and confidentiality.

  • CVSS V3 rated as Medium - 5.5 severity.
  • CVSS V2 rated as Medium - 5.4 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2023-2024-520 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 357238

    CVE-2023-6237 | CVE-2024-0727 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2023-2024-520 amazon linux 2023 URL Logo alas.aws.amazon.com/AL2023/ALAS-2024-520.html
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