Important: libarchive

Issue Overview:

archive_read_format_rar_read_data in archive_read_support_format_rar.c in libarchive before 3.4.0 has a use-after-free in a certain ARCHIVE_FAILED situation, related to Ppmd7_DecodeSymbol. (CVE-2019-18408)

Affected Packages:

libarchive

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 libarchive to update your system.

New Packages:

aarch64:  
    libarchive-3.1.2-14.amzn2.aarch64  
    libarchive-devel-3.1.2-14.amzn2.aarch64  
    bsdtar-3.1.2-14.amzn2.aarch64  
    bsdcpio-3.1.2-14.amzn2.aarch64  
    libarchive-debuginfo-3.1.2-14.amzn2.aarch64  
  
i686:  
    libarchive-3.1.2-14.amzn2.i686  
    libarchive-devel-3.1.2-14.amzn2.i686  
    bsdtar-3.1.2-14.amzn2.i686  
    bsdcpio-3.1.2-14.amzn2.i686  
    libarchive-debuginfo-3.1.2-14.amzn2.i686  
  
src:  
    libarchive-3.1.2-14.amzn2.src  
  
x86_64:  
    libarchive-3.1.2-14.amzn2.x86_64  
    libarchive-devel-3.1.2-14.amzn2.x86_64  
    bsdtar-3.1.2-14.amzn2.x86_64  
    bsdcpio-3.1.2-14.amzn2.x86_64  
    libarchive-debuginfo-3.1.2-14.amzn2.x86_64  

Additional References

Red Hat: CVE-2019-18408

Mitre: CVE-2019-18408