ALAS-2016-676


Amazon Linux AMI Security Advisory: ALAS-2016-676
Advisory Release Date: 2016-03-29 15:30 Pacific
Severity: Important

Issue Overview:

It was found that when an SVN server (both svnserve and httpd with the mod_dav_svn module) searched the history of a file or a directory, it would disclose its location in the repository if that file or directory was not readable (for example, if it had been moved). (CVE-2015-3187 )

An integer overflow was discovered allowing remote attackers to execute arbitrary code via an svn:// protocol string, which triggers a heap-based buffer overflow and an out-of-bounds read. (CVE-2015-5259 )

It was found that the mod_authz_svn module did not properly restrict anonymous access to Subversion repositories under certain configurations when used with Apache httpd 2.4.x. This could allow a user to anonymously access files in a Subversion repository, which should only be accessible to authenticated users. (CVE-2015-3184 )

It was found that the mod_dav_svn module was vulnerable to a remotely triggerable heap-based buffer overflow and out-of-bounds read caused by an integer overflow when parsing skel-encoded request bodies, allowing an attacker with write access to a repository to cause a denial of service attack (on 32-bit or 64-bit servers) or possibly execute arbitrary code (on 32-bit servers only) under the context of the httpd process. (CVE-2015-5343 )


Affected Packages:

mod_dav_svn,subversion


Issue Correction:
Run yum update mod_dav_svn to update your system.
Run yum update subversion to update your system.

New Packages:
i686:
    mod_dav_svn-1.8.15-1.52.amzn1.i686
    mod_dav_svn-debuginfo-1.8.15-1.52.amzn1.i686
    mod24_dav_svn-1.8.15-1.54.amzn1.i686
    subversion-tools-1.8.15-1.54.amzn1.i686
    subversion-1.8.15-1.54.amzn1.i686
    subversion-python27-1.8.15-1.54.amzn1.i686
    subversion-javahl-1.8.15-1.54.amzn1.i686
    subversion-ruby-1.8.15-1.54.amzn1.i686
    subversion-perl-1.8.15-1.54.amzn1.i686
    subversion-debuginfo-1.8.15-1.54.amzn1.i686
    subversion-devel-1.8.15-1.54.amzn1.i686
    subversion-libs-1.8.15-1.54.amzn1.i686
    subversion-python26-1.8.15-1.54.amzn1.i686

src:
    mod_dav_svn-1.8.15-1.52.amzn1.src
    subversion-1.8.15-1.54.amzn1.src

x86_64:
    mod_dav_svn-1.8.15-1.52.amzn1.x86_64
    mod_dav_svn-debuginfo-1.8.15-1.52.amzn1.x86_64
    subversion-debuginfo-1.8.15-1.54.amzn1.x86_64
    subversion-devel-1.8.15-1.54.amzn1.x86_64
    subversion-libs-1.8.15-1.54.amzn1.x86_64
    subversion-javahl-1.8.15-1.54.amzn1.x86_64
    subversion-tools-1.8.15-1.54.amzn1.x86_64
    mod24_dav_svn-1.8.15-1.54.amzn1.x86_64
    subversion-python26-1.8.15-1.54.amzn1.x86_64
    subversion-python27-1.8.15-1.54.amzn1.x86_64
    subversion-ruby-1.8.15-1.54.amzn1.x86_64
    subversion-1.8.15-1.54.amzn1.x86_64
    subversion-perl-1.8.15-1.54.amzn1.x86_64