ALAS-2022-1573


Amazon Linux 1 Security Advisory: ALAS-2022-1573
Advisory Release Date: 2022-03-09 22:48 Pacific
Advisory Updated Date: 2022-03-10 19:12 Pacific
Severity: Critical

Issue Overview:

A flaw was found in expat. Passing malformed 2- and 3-byte UTF-8 sequences (for example, from start tag names) to the XML processing application on top of expat can lead to arbitrary code execution. This issue is dependent on how invalid UTF-8 is handled inside the XML processor. (CVE-2022-25235)

A flaw was found in expat. Passing one or more namespace separator characters in the "xmlns[:prefix]" attribute values made expat send malformed tag names to the XML processor on top of expat. This issue causes arbitrary code execution depending on how unexpected cases are handled inside the XML processor. (CVE-2022-25236)


Affected Packages:

expat


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

New Packages:
i686:
    expat-devel-2.1.0-12.27.amzn1.i686
    expat-debuginfo-2.1.0-12.27.amzn1.i686
    expat-2.1.0-12.27.amzn1.i686

src:
    expat-2.1.0-12.27.amzn1.src

x86_64:
    expat-devel-2.1.0-12.27.amzn1.x86_64
    expat-2.1.0-12.27.amzn1.x86_64
    expat-debuginfo-2.1.0-12.27.amzn1.x86_64