CVE intelligence and bounded remediation

CVE-2020-1476 — An elevation of privilege vulnerability exists when ASP.NET or .NET web applications running on IIS improperly allow access to cached files

Medium CVSS 5.5

An elevation of privilege vulnerability exists when ASP.NET or .NET web applications running on IIS improperly allow access to cached files. An attacker who successfully exploited this vulnerability could gain access to restricted files. To exploit this vulnerability, an attacker would need to send a specially crafted request to an affected server. The update addresses the vulnerability by changing how ASP.NET and .NET handle requests.

Severity
Medium
CVSS
5.5 (3.1)
Published
2020-08-17
CISA KEV
Not currently listed
Ecosystem
windows/system

Affected products

  • microsoft / .net_framework / 2.0
  • microsoft / .net_framework / 3.5
  • microsoft / .net_framework / 4.6.2
  • microsoft / .net_framework / 4.7
  • microsoft / .net_framework / 4.7.1
  • microsoft / .net_framework / 4.7.2

Showing 6 representative product identities from 28 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Privilege escalation and unsafe privilege management

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Map service accounts, operating-system identities, roles, capabilities, impersonation, set-user transitions, and administrative helper paths.
  • Determine whether untrusted users or lower-privilege processes can reach the affected transition or modify inputs it trusts.
  • Review file, socket, registry, device, job, container, and cloud-role permissions used before and after privilege changes.

Remediate safely

  • Apply the supported fix and redesign privileged operations as a minimal, authenticated, allowlisted interface.
  • Drop privileges before processing untrusted input, verify the drop succeeds, and remove unnecessary roles, capabilities, and write permissions.
  • Validate ownership and permissions at time of use and add explicit lower-to-higher privilege boundary tests.

Authoritative sources

Complete CVE record and remediation plan

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