libdwarf prior 20160923 File dwarf_get_xu_hash_entry out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in libdwarf. Affected by this issue is the function dwarf_get_xu_hash_entry of the component File Handler. This manipulation causes out-of-bounds. This vulnerability is tracked as CVE-2016-5032. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in libdwarf (Programming Tool Software) and classified as problematic. Affected by this vulnerability is the function dwarf_get_xu_hash_entry of the component File Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect availability. The summary by CVE is:

The dwarf_get_xu_hash_entry function in libdwarf before 20160923 allows remote attackers to cause a denial of service (crash) via a crafted file.

The bug was discovered 05/24/2016. The weakness was disclosed 02/17/2017 (oss-sec). It is possible to read the advisory at openwall.com. This vulnerability is known as CVE-2016-5032 since 05/24/2016. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 230 days. During that time the estimated underground price was around $0-$5k. 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.

Upgrading to version 20160923 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (96368). The entries VDB-93870, VDB-96999, VDB-97000 and VDB-97001 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
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: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libdwarf 20160923

Timelineinfo

05/24/2016 🔍
05/24/2016 +0 days 🔍
01/09/2017 +230 days 🔍
01/10/2017 +1 days 🔍
02/17/2017 +38 days 🔍
02/17/2017 +0 days 🔍
02/18/2017 +1 days 🔍
08/15/2020 +1274 days 🔍

Sourcesinfo

Advisory: openwall.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-5032 (🔍)
GCVE (CVE): GCVE-0-2016-5032
GCVE (VulDB): GCVE-100-97087
OSVDB: - CVE-2016-5032 - libdwarf - Denial of Service Issue

See also: 🔍

Entryinfo

Created: 02/18/2017 08:54
Updated: 08/15/2020 16:42
Changes: 02/18/2017 08:54 (61), 08/15/2020 16:42 (9)
Complete: 🔍
Cache ID: 216:D48:103

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