Important: gzip, xz

Issue Overview:

An arbitrary file write vulnerability was found in GNU gzip’s zgrep utility. When zgrep is applied on the attacker’s chosen file name (for example, a crafted file name), this can overwrite an attacker’s content to an arbitrary attacker-selected file. This flaw occurs due to insufficient validation when processing filenames with two or more newlines where selected content and the target file names are embedded in crafted multi-line file names. This flaw allows a remote, low privileged attacker to force zgrep to write arbitrary files on the system. (CVE-2022-1271)

Affected Packages:

gzip, xz

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 gzip to update your system.
Run yum update xz to update your system.

New Packages:

aarch64:  
    gzip-1.5-10.amzn2.0.1.aarch64  
    gzip-debuginfo-1.5-10.amzn2.0.1.aarch64  
    xz-5.2.2-1.amzn2.0.3.aarch64  
    xz-libs-5.2.2-1.amzn2.0.3.aarch64  
    xz-compat-libs-5.2.2-1.amzn2.0.3.aarch64  
    xz-devel-5.2.2-1.amzn2.0.3.aarch64  
    xz-lzma-compat-5.2.2-1.amzn2.0.3.aarch64  
    xz-debuginfo-5.2.2-1.amzn2.0.3.aarch64  
  
i686:  
    gzip-1.5-10.amzn2.0.1.i686  
    gzip-debuginfo-1.5-10.amzn2.0.1.i686  
    xz-5.2.2-1.amzn2.0.3.i686  
    xz-libs-5.2.2-1.amzn2.0.3.i686  
    xz-compat-libs-5.2.2-1.amzn2.0.3.i686  
    xz-devel-5.2.2-1.amzn2.0.3.i686  
    xz-lzma-compat-5.2.2-1.amzn2.0.3.i686  
    xz-debuginfo-5.2.2-1.amzn2.0.3.i686  
  
src:  
    gzip-1.5-10.amzn2.0.1.src  
    xz-5.2.2-1.amzn2.0.3.src  
  
x86_64:  
    gzip-1.5-10.amzn2.0.1.x86_64  
    gzip-debuginfo-1.5-10.amzn2.0.1.x86_64  
    xz-5.2.2-1.amzn2.0.3.x86_64  
    xz-libs-5.2.2-1.amzn2.0.3.x86_64  
    xz-compat-libs-5.2.2-1.amzn2.0.3.x86_64  
    xz-devel-5.2.2-1.amzn2.0.3.x86_64  
    xz-lzma-compat-5.2.2-1.amzn2.0.3.x86_64  
    xz-debuginfo-5.2.2-1.amzn2.0.3.x86_64  

Additional References

Red Hat: CVE-2022-1271

Mitre: CVE-2022-1271