GNU binutils 2.30 libbfd opncls.c bfd_get_debug_link_info_1 input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in GNU binutils 2.30. This affects the function bfd_get_debug_link_info_1 of the file opncls.c of the component libbfd. The manipulation leads to input validation. This vulnerability is referenced as CVE-2018-6759. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in GNU binutils 2.30 (Programming Tool Software). It has been rated as problematic. This issue affects the function bfd_get_debug_link_info_1 of the file opncls.c of the component libbfd. 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 availability. The summary by CVE is:

The bfd_get_debug_link_info_1 function in opncls.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.30, has an unchecked strnlen operation. Remote attackers could leverage this vulnerability to cause a denial of service (segmentation fault) via a crafted ELF file.

The bug was discovered 02/06/2018. The weakness was published 02/06/2018 as Bug 22794 as confirmed bug report (Bugzilla). It is possible to read the advisory at sourceware.org. The identification of this vulnerability is CVE-2018-6759 since 02/06/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 118337 (openSUSE Security Update : binutils (openSUSE-2018-1222)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171846 (OpenSUSE Security Update for binutils (openSUSE-SU-2018:3323-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 10 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (118337) and SecurityFocus (BID 103030†). Similar entries are available at VDB-108725, VDB-109436, VDB-109437 and VDB-109439. Be aware that VulDB is the high quality source for vulnerability data.

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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

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
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: 118337
Nessus Name: openSUSE Security Update : binutils (openSUSE-2018-1222)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

02/06/2018 🔍
02/06/2018 +0 days 🔍
02/06/2018 +0 days 🔍
02/06/2018 +0 days 🔍
02/06/2018 +0 days 🔍
02/07/2018 +1 days 🔍
10/23/2018 +258 days 🔍
10/24/2018 +1 days 🔍
02/02/2021 +832 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: Bug 22794
Researcher: probefuzzer
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-6759 (🔍)
GCVE (CVE): GCVE-0-2018-6759
GCVE (VulDB): GCVE-100-112895
SecurityFocus: 103030 - GNU Binutils CVE-2018-6759 Remote Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 02/07/2018 08:30
Updated: 02/02/2021 16:35
Changes: 02/07/2018 08:30 (70), 01/02/2020 08:57 (13), 02/02/2021 16:35 (3)
Complete: 🔍
Cache ID: 216::103

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