GNU binutils 2.30 libbfd elf.c bfd_section_from_shdr input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability has been found in GNU binutils 2.30 and classified as problematic. This issue affects the function bfd_section_from_shdr of the file elf.c of the component libbfd. This manipulation causes input validation. This vulnerability appears as CVE-2018-8945. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in GNU binutils 2.30 (Programming Tool Software) and classified as problematic. Affected by this vulnerability is the function bfd_section_from_shdr of the file elf.c of the component libbfd. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. The summary by CVE is:

The bfd_section_from_shdr function in elf.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.30, allows remote attackers to cause a denial of service (segmentation fault) via a large attribute section.

The bug was discovered 02/07/2018. The weakness was presented 03/22/2018 (Website). It is possible to read the advisory at sourceware.org. This vulnerability is known as CVE-2018-8945 since 03/22/2018. 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 43 days. During that time the estimated underground price was around $0-$5k. 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 237010 (Red Hat Update for binutils (RHSA-2018:3032)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 8 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (118337) and SecurityFocus (BID 103077†). See VDB-108725, VDB-109436, VDB-109437 and VDB-109439 for similar entries. Be aware that VulDB is the high quality 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: 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

02/07/2018 🔍
02/17/2018 +10 days 🔍
03/22/2018 +33 days 🔍
03/22/2018 +0 days 🔍
03/22/2018 +0 days 🔍
03/23/2018 +1 days 🔍
10/23/2018 +214 days 🔍
10/24/2018 +1 days 🔍
02/22/2023 +1582 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: RHSA-2018:3032
Researcher: Kang
Status: Confirmed

CVE: CVE-2018-8945 (🔍)
GCVE (CVE): GCVE-0-2018-8945
GCVE (VulDB): GCVE-100-114943
SecurityFocus: 103077 - GNU Binutils CVE-2018-7208 Remote Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 03/23/2018 09:55
Updated: 02/22/2023 16:44
Changes: 03/23/2018 09:55 (69), 01/16/2020 08:29 (12), 02/06/2021 06:37 (3), 02/22/2023 16:44 (3)
Complete: 🔍
Cache ID: 216:A22:103

Be aware that VulDB is the high quality source for vulnerability data.

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