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Microsoft Security Response CenterCVE-2023-31130

Buffer Underwrite in ares_inet_net_pton()

MediumVendor CVSS 6.4 / 10 1 CVE Published May 30, 2023 at 12:00 AM UTC

Summary

Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?

One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information.

If impact to additional products is identified, we will update the CVE to reflect this.

Products covered

  • cm1 c-ares 1.19.1-1 on CBL Mariner 1.0

  • cbl2 python-gevent 21.1.2-3 on CBL Mariner 2.0

  • cbl2 nodejs18 18.17.1-2 on CBL Mariner 2.0

  • cbl2 nodejs 16.20.1-2 on CBL Mariner 2.0

  • cbl2 grpc 1.42.0-11 on CBL Mariner 2.0

  • cbl2 fluent-bit 2.1.10-1 on CBL Mariner 2.0

  • cbl2 c-ares 1.19.1-1 on CBL Mariner 2.0

  • azl3 grpc 1.62.0-2 on Azure Linux 3.0

Show 1 more products
  • azl3 grpc 1.42.0-7 on Azure Linux 3.0

Remediation

CBL-Mariner Releases

Vendor-listed fixes

  • 1.19.1-1

  • 21.1.2-3

  • 18.17.1-2

  • 16.20.1-2

  • 1.42.0-11

  • 2.1.10-1

  • 1.62.0-2

CVEs in this advisory 1

Updates

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Updated by Microsoft Security Response Center

    The vendor changed the advisory after it was first published.

  3. Added to SecurityAlert

    We collected the advisory from the official source.