Important: gupnp

Issue Overview:

A flaw was found in gupnp. DNS rebinding can occur when a victim’s browser is used by a remote web server to trigger actions against local UPnP services including data exfiltration, data tempering, and other exploits. The highest threat from this vulnerability is to data confidentiality and integrity. (CVE-2021-33516)

Affected Packages:

gupnp

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update gupnp to update your system.

New Packages:

aarch64:  
    gupnp-1.0.2-6.amzn2.aarch64  
    gupnp-devel-1.0.2-6.amzn2.aarch64  
    gupnp-debuginfo-1.0.2-6.amzn2.aarch64  
  
i686:  
    gupnp-1.0.2-6.amzn2.i686  
    gupnp-devel-1.0.2-6.amzn2.i686  
    gupnp-debuginfo-1.0.2-6.amzn2.i686  
  
noarch:  
    gupnp-docs-1.0.2-6.amzn2.noarch  
  
src:  
    gupnp-1.0.2-6.amzn2.src  
  
x86_64:  
    gupnp-1.0.2-6.amzn2.x86_64  
    gupnp-devel-1.0.2-6.amzn2.x86_64  
    gupnp-debuginfo-1.0.2-6.amzn2.x86_64  

Additional References

Red Hat: CVE-2021-33516

Mitre: CVE-2021-33516