[ASA-201903-5] file: multiple issues

[Morten Linderud]

Arch Linux Security Advisory ASA-201903-5
=========================================

Severity: High
Date    : 2019-03-03
CVE-ID  : CVE-2019-8904 CVE-2019-8905 CVE-2019-8906 CVE-2019-8907
Package : file
Type    : multiple issues
Remote  : Yes
Link    : https://security.archlinux.org/AVG-907

Summary
=======

The package file before version 5.36-1 is vulnerable to multiple issues
including information disclosure and denial of service.

Resolution
==========

Upgrade to 5.36-1.

# pacman -Syu "file>=5.36-1"

The problems have been fixed upstream in version 5.36.

Workaround
==========

None.

Description
===========

- CVE-2019-8904 (information disclosure)

do_bid_note in readelf.c in libmagic.a in file 5.35 has a stack-based
buffer over-read, related to file_printf and file_vprintf.

- CVE-2019-8905 (information disclosure)

do_core_note in readelf.c in libmagic.a in file 5.35 has a stack-based
buffer over-read, related to file_printable, a different vulnerability
than CVE-2018-10360.

- CVE-2019-8906 (information disclosure)

do_core_note in readelf.c in libmagic.a in file 5.35 has an out-of-
bounds read because memcpy is misused.

- CVE-2019-8907 (denial of service)

do_core_note in readelf.c in libmagic.a in file 5.35 allows remote
attackers to cause a denial of service (stack corruption and
application crash) or possibly have unspecified other impact.

Impact
======

A remote attack is able to display sensitive information within the
file process or cause a crash via a crafted ELF file.

References
==========

https://bugs.astron.com/view.php?id=62
https://bugs.astron.com/view.php?id=63
https://github.com/file/file/commit/2858eaf99f6cc5aae129bcbf1e24ad160240185f
https://bugs.astron.com/view.php?id=64
https://bugs.astron.com/view.php?id=65
https://security.archlinux.org/CVE-2019-8904
https://security.archlinux.org/CVE-2019-8905
https://security.archlinux.org/CVE-2019-8906
https://security.archlinux.org/CVE-2019-8907
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