GNU binutils 2.31 libbfd elflink.c elf_link_input_bfd null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability was found in GNU binutils 2.31. It has been declared as problematic. This affects the function elf_link_input_bfd of the file elflink.c of the component libbfd. Executing a manipulation can lead to null pointer dereference. This vulnerability appears as CVE-2018-18607. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in GNU binutils 2.31 (Programming Tool Software). It has been declared as problematic. This vulnerability affects the function elf_link_input_bfd of the file elflink.c of the component libbfd. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. CVE summarizes:

An issue was discovered in elf_link_input_bfd in elflink.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.31. There is a NULL pointer dereference in elf_link_input_bfd when used for finding STT_TLS symbols without any TLS section. A specially crafted ELF allows remote attackers to cause a denial of service, as demonstrated by ld.

The bug was discovered 10/23/2018. The weakness was presented 10/23/2018 (Website). The advisory is shared for download at securityfocus.com. This vulnerability was named CVE-2018-18607 since 10/23/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 105754†). See VDB-125906 and VDB-125907 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

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

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: 102def4da826b3d9e169741421e5e67e8731909a

Timelineinfo

10/23/2018 🔍
10/23/2018 +0 days 🔍
10/23/2018 +0 days 🔍
10/23/2018 +0 days 🔍
10/23/2018 +0 days 🔍
10/24/2018 +1 days 🔍
05/30/2023 +1679 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: USN-4336-1⛔
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-18607 (🔍)
GCVE (CVE): GCVE-0-2018-18607
GCVE (VulDB): GCVE-100-125908
SecurityFocus: 105754 - GNU Binutils Multiple Security Vulnerabilities

See also: 🔍

Entryinfo

Created: 10/24/2018 06:47
Updated: 05/30/2023 18:39
Changes: 10/24/2018 06:47 (61), 04/06/2020 11:10 (4), 05/30/2023 18:39 (4)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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