[arch-security] [ASA-201707-7] libdwarf: denial of service

[Remi Gacogne]

Arch Linux Security Advisory ASA-201707-7
=========================================

Severity: Low
Date    : 2017-07-11
CVE-ID  : CVE-2017-9998
Package : libdwarf
Type    : denial of service
Remote  : No
Link    : https://security.archlinux.org/AVG-332

Summary
=======

The package libdwarf before version 20170709-1 is vulnerable to denial
of service.

Resolution
==========

Upgrade to 20170709-1.

# pacman -Syu "libdwarf>=20170709-1"

The problem has been fixed upstream in version 20170709.

Workaround
==========

None.

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

The _dwarf_decode_s_leb128_chk function in dwarf_leb.c in libdwarf
through 2017-06-28 allows attackers to cause a denial of service
(Segmentation fault) via a crafted file.

Impact
======

An attacker can cause a denial of service by tricking a local user into
submitting a crafted file to a program linked against libdwarf.

References
==========

https://bugzilla.redhat.com/show_bug.cgi?id=1465756
https://security.archlinux.org/CVE-2017-9998

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