BusyBox up to 1.24.x DHCP Client OPTION_6RD memory corruption

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.4	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in BusyBox up to 1.24.x. Affected by this vulnerability is an unknown functionality of the component DHCP Client. The manipulation of the argument OPTION_6RD results in memory corruption. This vulnerability is identified as CVE-2016-2148. The attack can be executed remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in BusyBox up to 1.24.x. It has been classified as critical. Affected is some unknown functionality of the component DHCP Client. The manipulation of the argument OPTION_6RD with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Heap-based buffer overflow in the DHCP client (udhcpc) in BusyBox before 1.25.0 allows remote attackers to have unspecified impact via vectors involving OPTION_6RD parsing.

The bug was discovered 03/11/2016. The weakness was released 02/09/2017 by Matt (Website). The advisory is shared for download at openwall.com. This vulnerability is traded as CVE-2016-2148 since 01/29/2016. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 268 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 95519 (GLSA-201612-04 : BusyBox: Multiple vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197418 (Ubuntu Security Notification for Busybox Vulnerabilities (USN-3935-1)).

Upgrading to version 1.25.0 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (95519) and SecurityFocus (BID 72324†). Entries connected to this vulnerability are available at VDB-96755, VDB-97860, VDB-104922 and VDB-108612. Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

• BusyBox

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21
• 1.22
• 1.23
• 1.24

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 95519
Nessus Name: GLSA-201612-04 : BusyBox: Multiple vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: BusyBox 1.25.0
Patch: git.busybox.net

Timelineinfo

01/27/2015 🔍
01/29/2016 +367 days 🔍
03/11/2016 +42 days 🔍
12/04/2016 +268 days 🔍
12/05/2016 +1 days 🔍
02/09/2017 +66 days 🔍
02/09/2017 +0 days 🔍
02/09/2017 +0 days 🔍
11/12/2022 +2102 days 🔍

Sourcesinfo

Advisory: USN-3935-1
Researcher: Matt
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-2148 (🔍)
GCVE (CVE): GCVE-0-2016-2148
GCVE (VulDB): GCVE-100-96756
SecurityFocus: 72324 - BusyBox CVE-2014-9645 Local Security Bypass Vulnerability
OSVDB: - CVE-2016-2148 - BusyBox - Buffer Overflow Issue

See also: 🔍

Entryinfo

Created: 02/09/2017 19:32
Updated: 11/12/2022 12:30
Changes: 02/09/2017 19:32 (72), 08/12/2020 18:56 (8), 11/12/2022 12:30 (4)
Complete: 🔍
Cache ID: 216:C2A:103

Once again VulDB remains the best source for vulnerability data.

Discussion

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