FreeBSD ELF Header Parser Kernel Memory input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

A vulnerability was found in FreeBSD (Operating System) (version now known). It has been rated as critical. This issue affects some unknown processing of the component ELF Header Parser. The manipulation with an unknown input leads to a input validation vulnerability (Kernel Memory). 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. The summary by CVE is:

In FreeBSD before 11.1-STABLE, 11.2-RELEASE-p3, 11.1-RELEASE-p14, 10.4-STABLE, and 10.4-RELEASE-p12, insufficient validation in the ELF header parser could allow a malicious ELF binary to cause a kernel crash or disclose kernel memory.

The bug was discovered 09/12/2018. The weakness was presented 09/12/2018 (Website). It is possible to read the advisory at security.freebsd.org. The identification of this vulnerability is CVE-2018-6924 since 02/11/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 117465 (FreeBSD : FreeBSD -- Improper ELF header parsing (a67c122a-b693-11e8-ac58-a4badb2f4699)), 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 eliminates this vulnerability. A possible mitigation has been published 2 hours after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (117465).

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.5

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.1
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

Name: Kernel Memory
Class: Input validation / Kernel Memory
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 117465
Nessus Name: FreeBSD : FreeBSD -- Improper ELF header parsing (a67c122a-b693-11e8-ac58-a4badb2f4699)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

02/11/2018 🔍
09/12/2018 +212 days 🔍
09/12/2018 +0 days 🔍
09/12/2018 +0 days 🔍
09/12/2018 +0 days 🔍
09/13/2018 +1 days 🔍
09/13/2018 +0 days 🔍
05/16/2023 +1706 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: security.freebsd.org
Status: Not defined

CVE: CVE-2018-6924 (🔍)
SecurityTracker: 1041646

Entryinfo

Created: 09/13/2018 08:37
Updated: 05/16/2023 09:15
Changes: 09/13/2018 08:37 (64), 03/23/2020 13:16 (2), 05/16/2023 09:15 (4)
Complete: 🔍

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