The dwarf_read_cie_fde_prefix function in dwarf_frame2.c in libdwarf 20151114 allows attackers to cause a denial of service (out-of-bounds read) via a crafted ELF object file.

The remote Redhat Enterprise Linux 7 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - libdwarf: heap-based buffer over-read in dwarf_formsdata() (CVE-2017-9055)

  - Use-after-free vulnerability in dwarfdump in libdwarf 20130126 through 20140805 might allow remote     attackers to cause a denial of service (program crash) via a crafted ELF file. (CVE-2014-9482)

  - dwarf_leb.c in libdwarf allows attackers to cause a denial of service (SIGSEGV). (CVE-2015-8538)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

Several vulnerabilities were discovered in dwarfutils, a tool and library for reading/consuming and writing/producing DWARF debugging information. The Common Vulnerabilities and Exposures project identifies the following issues :

CVE-2015-8538

A specially crafted ELF file can cause a segmentation fault.

CVE-2015-8750

A specially crafted ELF file can cause a NULL pointer dereference.

CVE-2016-2050

Out-of-bounds write

CVE-2016-2091

Out-of-bounds read

CVE-2016-5034

Out-of-bounds write

CVE-2016-5036

Out-of-bounds read

CVE-2016-5038

Out-of-bounds read

CVE-2016-5039

Out-of-bounds read

CVE-2016-5042

A specially crafted DWARF section can cause an infinite loop, reading from increasing memory addresses until the application crashes.

For Debian 7 'Wheezy', these problems have been fixed in version 20120410-2+deb7u2.

We recommend that you upgrade your dwarfutils packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Update to 20160507 release - fixes many outstanding crash bugs

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
198610	RHEL 7 : libdwarf (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	critical
94143	Debian DLA-669-1 : dwarfutils security update	Nessus	Debian Local Security Checks	high
92205	Fedora 24 : libdwarf (2016-f36c5935e5)	Nessus	Fedora Local Security Checks	medium

Detections

Analytics

CVE-2016-2091

low

Tenable Plugins

critical

high

medium