ALAS-2019-1325


Amazon Linux AMI Security Advisory: ALAS-2019-1325
Advisory Release Date: 2019-12-11 05:55 Pacific
Severity: Important

Issue Overview:

The --export-marks option of git fast-import is exposed also via the in-stream command feature export-marks=... and it allows overwriting arbitrary paths.(CVE-2019-1348 )

When submodules are cloned recursively, under certain circumstances Git could be fooled into using the same Git directory twice. We now require the directory to be empty.(CVE-2019-1349 )

Incorrect quoting of command-line arguments allowed remote code execution during a recursive clone in conjunction with SSH URLs. (CVE-2019-1350 )

While the only permitted drive letters for physical drives on Windows are letters of the US-English alphabet, this restriction does not apply to virtual drives assigned viah subst :. Git mistook such paths for relative paths, allowing writing outside of the worktree while cloning. (CVE-2019-13510 )

Git was unaware of NTFS Alternate Data Streams, allowing files inside the .git/ directory to be overwritten during a clone.(CVE-2019-1352 )

When running Git in the Windows Subsystem for Linux (also known as "WSL") while accessing a working directory on a regular Windows drive, none of the NTFS protections were active. (CVE-2019-1353 )

Filenames on Linux/Unix can contain backslashes. On Windows, backslashes are directory separators. Git did not use to refuse to write out tracked files with such filenames.(CVE-2019-1354 )

Recursive clones are currently affected by a vulnerability that is caused by too-lax validation of submodule names, allowing very targeted attacks via remote code execution in recursive clones.(CVE-2019-1387 )


Affected Packages:

git


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

New Packages:
i686:
    git-daemon-2.14.6-1.61.amzn1.i686
    git-debuginfo-2.14.6-1.61.amzn1.i686
    git-2.14.6-1.61.amzn1.i686
    git-svn-2.14.6-1.61.amzn1.i686

noarch:
    perl-Git-2.14.6-1.61.amzn1.noarch
    git-bzr-2.14.6-1.61.amzn1.noarch
    git-email-2.14.6-1.61.amzn1.noarch
    emacs-git-el-2.14.6-1.61.amzn1.noarch
    perl-Git-SVN-2.14.6-1.61.amzn1.noarch
    git-p4-2.14.6-1.61.amzn1.noarch
    git-all-2.14.6-1.61.amzn1.noarch
    git-hg-2.14.6-1.61.amzn1.noarch
    emacs-git-2.14.6-1.61.amzn1.noarch
    gitweb-2.14.6-1.61.amzn1.noarch
    git-cvs-2.14.6-1.61.amzn1.noarch

src:
    git-2.14.6-1.61.amzn1.src

x86_64:
    git-svn-2.14.6-1.61.amzn1.x86_64
    git-daemon-2.14.6-1.61.amzn1.x86_64
    git-debuginfo-2.14.6-1.61.amzn1.x86_64
    git-2.14.6-1.61.amzn1.x86_64