RHSA-2026:17527

Vulnerability from csaf_redhat - Published: 2026-05-14 10:35 - Updated: 2026-06-10 22:05
Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Severity
Important
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs: dotnet9.0: * aspnetcore-runtime-9.0-9.0.16-1.hum1 (aarch64, x86_64) * aspnetcore-runtime-dbg-9.0-9.0.16-1.hum1 (aarch64, x86_64) * aspnetcore-targeting-pack-9.0-9.0.16-1.hum1 (aarch64, x86_64) * dotnet-apphost-pack-9.0-9.0.16-1.hum1 (aarch64, x86_64) * dotnet-hostfxr-9.0-9.0.16-1.hum1 (aarch64, x86_64) * dotnet-runtime-9.0-9.0.16-1.hum1 (aarch64, x86_64) * dotnet-runtime-dbg-9.0-9.0.16-1.hum1 (aarch64, x86_64) * dotnet-sdk-9.0-9.0.117-1.hum1 (aarch64, x86_64) * dotnet-sdk-9.0-source-built-artifacts-9.0.117-1.hum1 (aarch64, x86_64) * dotnet-sdk-aot-9.0-9.0.117-1.hum1 (aarch64, x86_64) * dotnet-sdk-dbg-9.0-9.0.117-1.hum1 (aarch64, x86_64) * dotnet-targeting-pack-9.0-9.0.16-1.hum1 (aarch64, x86_64) * dotnet-templates-9.0-9.0.117-1.hum1 (aarch64, x86_64) * netstandard-targeting-pack-2.1-9.0.117-1.hum1 (aarch64, x86_64) * dotnet9.0-9.0.117-1.hum1.src (src)
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
CVE-2026-42899

A flaw was found in dotnet. An infinite loop in ASP.NET Core allows an unauthenticated remote attacker to cause a denial of service over a network. This issue can lead to an application crash and a high consumption of system resources.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:dotnet9-0-main@src —
Vendor Fix fix
Workaround
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:dotnet9-0-main@aarch64 —
Workaround
Unresolved product id: Red Hat Hardened Images:dotnet9-0-main@x86_64 —
Workaround
Threats
Impact Important
CVE-2026-45491

A flaw was found in .NET. This vulnerability, related to improper link resolution before file access (also known as 'link following'), allows an unauthorized local attacker to perform unauthorized tampering. This could lead to integrity compromise of local files.

6.2 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:dotnet9-0-main@src —
Vendor Fix fix
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:dotnet9-0-main@aarch64 —
Unresolved product id: Red Hat Hardened Images:dotnet9-0-main@x86_64 —
Threats
Impact Moderate
CVE-2026-45591

A flaw was found in ASP.NET Core. This vulnerability allows an unauthorized attacker to exploit uncontrolled resource consumption, leading to a Denial of Service (DoS) over a network. This means that an attacker can make the affected system unavailable to legitimate users by consuming its resources.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-770 - Allocation of Resources Without Limits or Throttling
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:dotnet9-0-main@src —
Vendor Fix fix
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:dotnet9-0-main@aarch64 —
Unresolved product id: Red Hat Hardened Images:dotnet9-0-main@x86_64 —
Threats
Impact Important
References
To clipboard 

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            "attackVector": "LOCAL",
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            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          "products": [
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            "Red Hat Hardened Images:dotnet9-0-main@src",
            "Red Hat Hardened Images:dotnet9-0-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "dotnet: .NET: Local file tampering via link following vulnerability"
    },
    {
      "cve": "CVE-2026-45591",
      "cwe": {
        "id": "CWE-770",
        "name": "Allocation of Resources Without Limits or Throttling"
      },
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      "flags": [
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          "title": "Vulnerability description"
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        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:dotnet9-0-main@src"
        ],
        "known_not_affected": [
          "Red Hat Hardened Images:dotnet9-0-main@aarch64",
          "Red Hat Hardened Images:dotnet9-0-main@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-45591"
        },
        {
          "category": "external",
          "summary": "RHBZ#2487224",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2487224"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-45591",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-45591"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-45591",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45591"
        },
        {
          "category": "external",
          "summary": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45591",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45591"
        }
      ],
      "release_date": "2026-06-09T17:05:29.575000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-05-14T10:35:57+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:dotnet9-0-main@src"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:17527"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:dotnet9-0-main@aarch64",
            "Red Hat Hardened Images:dotnet9-0-main@src",
            "Red Hat Hardened Images:dotnet9-0-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "dotnet: ASP.NET Core: Denial of Service via uncontrolled resource consumption"
    }
  ]
}


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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.