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🛡️ RHSA-2021:3819 — aspnetcore-runtime-5.0 (CVE-2021-41355)

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Red Hat Security Advisory: .NET 5.0 security and bugfix update

How this vulnerability can be exploited

This issue can be reached from an adjacent network, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

  • Attack vector: Adjacent network — the attacker has to sit on the same local or logical network.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: Required — someone has to click, open or visit something.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: None.
  • Availability impact: None.

Affected software

RHSA-2021:3819 is recorded against 19 packages.

  • aspnetcore-runtime-5.0 (fixed in 0:5.0.11-1.el8_4)
  • aspnetcore-targeting-pack-5.0 (fixed in 0:5.0.11-1.el8_4)
  • dotnet (fixed in 0:5.0.208-1.el8_4)
  • dotnet-apphost-pack-5.0 (fixed in 0:5.0.11-1.el8_4)
  • dotnet-apphost-pack-5.0-debuginfo (fixed in 0:5.0.11-1.el8_4)
  • dotnet-host (fixed in 0:5.0.11-1.el8_4)
  • dotnet-host-debuginfo (fixed in 0:5.0.11-1.el8_4)
  • dotnet-hostfxr-5.0 (fixed in 0:5.0.11-1.el8_4)
  • dotnet-hostfxr-5.0-debuginfo (fixed in 0:5.0.11-1.el8_4)
  • dotnet-runtime-5.0 (fixed in 0:5.0.11-1.el8_4)
  • dotnet-runtime-5.0-debuginfo (fixed in 0:5.0.11-1.el8_4)
  • dotnet-sdk-5.0 (fixed in 0:5.0.208-1.el8_4)
  • dotnet-sdk-5.0-debuginfo (fixed in 0:5.0.208-1.el8_4)
  • dotnet-targeting-pack-5.0 (fixed in 0:5.0.11-1.el8_4)
  • dotnet-templates-5.0 (fixed in 0:5.0.208-1.el8_4)
  • dotnet5.0 (fixed in 0:5.0.208-1.el8_4)
  • dotnet5.0-debuginfo (fixed in 0:5.0.208-1.el8_4)
  • dotnet5.0-debugsource (fixed in 0:5.0.208-1.el8_4)
  • netstandard-targeting-pack-2.1 (fixed in 0:5.0.208-1.el8_4)

Timeline and source

Published on 16 September 2024 and last revised on 22 November 2025. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

access.redhat.com (Advisory)
access.redhat.com (Article)
bugzilla.redhat.com (Report)
security.access.redhat.com (Advisory)
access.redhat.com (Report)
www.cve.org (Advisory)
nvd.nist.gov (Advisory)
github.com (Article)
github.com (Article)
msrc.microsoft.com (Article)

Other advisories for this package

aspnetcore-runtime-5.0 has other advisories on record. If you are patching this one, these are worth checking on the same host:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2024-09-16
Updated 2026-08-20
Modified 2025-11-22
Fix URL N/A

Affected Packages

Software From version Fixed in
aspnetcore-runtime-5.0 — 0:5.0.11-1.el8_4
aspnetcore-targeting-pack-5.0 — 0:5.0.11-1.el8_4
dotnet — 0:5.0.208-1.el8_4
dotnet-apphost-pack-5.0 — 0:5.0.11-1.el8_4
dotnet-apphost-pack-5.0-debuginfo — 0:5.0.11-1.el8_4
dotnet-host — 0:5.0.11-1.el8_4
dotnet-host-debuginfo — 0:5.0.11-1.el8_4
dotnet-hostfxr-5.0 — 0:5.0.11-1.el8_4
dotnet-hostfxr-5.0-debuginfo — 0:5.0.11-1.el8_4
dotnet-runtime-5.0 — 0:5.0.11-1.el8_4
dotnet-runtime-5.0-debuginfo — 0:5.0.11-1.el8_4
dotnet-sdk-5.0 — 0:5.0.208-1.el8_4
dotnet-sdk-5.0-debuginfo — 0:5.0.208-1.el8_4
dotnet-targeting-pack-5.0 — 0:5.0.11-1.el8_4
dotnet-templates-5.0 — 0:5.0.208-1.el8_4
dotnet5.0 — 0:5.0.208-1.el8_4
dotnet5.0-debuginfo — 0:5.0.208-1.el8_4
dotnet5.0-debugsource — 0:5.0.208-1.el8_4
netstandard-targeting-pack-2.1 — 0:5.0.208-1.el8_4

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