libdwarf prior 20161124 libdwarf/dwarf_leb.c memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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8.2$0-$5k0.00

Summaryinfo

A vulnerability was found in libdwarf. It has been rated as critical. Affected is an unknown function of the file libdwarf/dwarf_leb.c. The manipulation leads to memory corruption. This vulnerability is traded as CVE-2016-9558. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in libdwarf (Programming Tool Software) and classified as critical. This issue affects an unknown function of the file libdwarf/dwarf_leb.c. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

(1) libdwarf/dwarf_leb.c and (2) dwarfdump/print_frames.c in libdwarf before 20161124 allow remote attackers to have unspecified impact via a crafted bit pattern in a signed leb number, aka a "negation overflow."

The bug was discovered 02/28/2017. The weakness was shared 02/28/2017 by Agostino Sarubbo with Gentoo (oss-sec). The advisory is shared at openwall.com. The identification of this vulnerability is CVE-2016-9558 since 11/22/2016. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 96368 (FreeBSD : libdwarf -- multiple vulnerabilities (83041ca7-d690-11e6-9171-14dae9d210b8)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276609 (Fedora Security Update for libdwarf (FEDORA-2017-15e7445d67)).

Upgrading to version 20161124 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (96368) and SecurityFocus (BID 94491†). The entries VDB-93870, VDB-96999, VDB-97000 and VDB-97001 are related to this item. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 96368
Nessus Name: FreeBSD : libdwarf -- multiple vulnerabilities (83041ca7-d690-11e6-9171-14dae9d210b8)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for libdwarf FEDORA-2017-15e7445d67
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libdwarf 20161124

Timelineinfo

11/19/2016 🔍
11/22/2016 +3 days 🔍
01/09/2017 +48 days 🔍
01/10/2017 +1 days 🔍
02/28/2017 +49 days 🔍
02/28/2017 +0 days 🔍
02/28/2017 +0 days 🔍
03/01/2017 +1 days 🔍
09/02/2020 +1281 days 🔍

Sourcesinfo

Advisory: openwall.com
Researcher: Agostino Sarubbo
Organization: Gentoo
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-9558 (🔍)
GCVE (CVE): GCVE-0-2016-9558
GCVE (VulDB): GCVE-100-97349
SecurityFocus: 94491 - libdwarf CVE-2016-9558 Integer Overflow Vulnerability
OSVDB: - CVE-2016-9558 - libdwarf - Negation Overflow Issue

See also: 🔍

Entryinfo

Created: 03/01/2017 08:13
Updated: 09/02/2020 17:27
Changes: 03/01/2017 08:13 (78), 09/02/2020 17:27 (3)
Complete: 🔍
Cache ID: 216:1DF:103

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