Medium: libidn2

Issue Overview:

heap-based buffer overflow in idn2_to_ascii_4i in lib/lookup.c idn2_to_ascii_4i in lib/lookup.c in GNU libidn2 before 2.1.1 has a heap-based buffer overflow via a long domain string.(CVE-2019-18224)

Affected Packages:

libidn2

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 libidn2 to update your system.

New Packages:

aarch64:  
    libidn2-2.3.0-1.amzn2.aarch64  
    libidn2-devel-2.3.0-1.amzn2.aarch64  
    idn2-2.3.0-1.amzn2.aarch64  
    libidn2-debuginfo-2.3.0-1.amzn2.aarch64  
  
i686:  
    libidn2-2.3.0-1.amzn2.i686  
    libidn2-devel-2.3.0-1.amzn2.i686  
    idn2-2.3.0-1.amzn2.i686  
    libidn2-debuginfo-2.3.0-1.amzn2.i686  
  
src:  
    libidn2-2.3.0-1.amzn2.src  
  
x86_64:  
    libidn2-2.3.0-1.amzn2.x86_64  
    libidn2-devel-2.3.0-1.amzn2.x86_64  
    idn2-2.3.0-1.amzn2.x86_64  
    libidn2-debuginfo-2.3.0-1.amzn2.x86_64  

Additional References

Red Hat: CVE-2019-12290, CVE-2019-18224

Mitre: CVE-2019-12290, CVE-2019-18224