GNU C Library getaddrinfo.c getaddrinfo input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in GNU C Library. Affected by this issue is the function getaddrinfo of the file sysdeps/posix/getaddrinfo.c. Such manipulation leads to input validation. This vulnerability is documented as CVE-2016-3706. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in GNU C Library (Software Library) (version unknown) and classified as critical. Affected by this issue is the function getaddrinfo of the file sysdeps/posix/getaddrinfo.c. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Stack-based buffer overflow in the getaddrinfo function in sysdeps/posix/getaddrinfo.c in the GNU C Library (aka glibc or libc6) allows remote attackers to cause a denial of service (crash) via vectors involving hostent conversion. NOTE: this vulnerability exists because of an incomplete fix for CVE-2013-4458.

The weakness was released 06/10/2016 with Red Hat (Website). The advisory is shared for download at sourceware.org. This vulnerability is handled as CVE-2016-3706 since 03/30/2016. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 91361 (Debian DLA-494-1 : eglibc security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168903 (OpenSuSE Security Update for glibc (openSUSE-SU-2016:1527-1)).

Upgrading 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 databases at Tenable (91361) and SecurityFocus (BID 88440†). Entries connected to this vulnerability are available at VDB-87698, VDB-87701 and VDB-87838. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
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: Input validation
CWE: CWE-20
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: 91361
Nessus Name: Debian DLA-494-1 : eglibc security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 12280
OpenVAS Name: Fedora Update for glibc FEDORA-2016-b321728d74
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: 4ab2ab03d4351914ee53248dc5aef4a8c88ff8b9

Timelineinfo

03/30/2016 🔍
04/27/2016 +28 days 🔍
05/30/2016 +33 days 🔍
05/31/2016 +1 days 🔍
06/10/2016 +10 days 🔍
06/10/2016 +0 days 🔍
06/11/2016 +1 days 🔍
08/23/2022 +2264 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: sourceware.org
Organization: Red Hat
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-3706 (🔍)
GCVE (CVE): GCVE-0-2016-3706
GCVE (VulDB): GCVE-100-87836
SecurityFocus: 88440 - GNU glibc 'getaddrinfo()' Function Incomplete Fix Remote Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 06/11/2016 19:26
Updated: 08/23/2022 11:17
Changes: 06/11/2016 19:26 (63), 01/15/2019 10:52 (15), 08/23/2022 11:17 (4)
Complete: 🔍
Cache ID: 216::103

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