BusyBox up to 1.24.x DHCP Client integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in BusyBox up to 1.24.x. Affected is an unknown function of the component DHCP Client. The manipulation leads to integer overflow. This vulnerability is referenced as CVE-2016-2147. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in BusyBox up to 1.24.x and classified as problematic. This issue affects an unknown functionality of the component DHCP Client. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is availability. The summary by CVE is:

Integer overflow in the DHCP client (udhcpc) in BusyBox before 1.25.0 allows remote attackers to cause a denial of service (crash) via a malformed RFC1035-encoded domain name, which triggers an out-of-bounds heap write.

The bug was discovered 03/11/2016. The weakness was published 02/09/2017 by Matt (Website). It is possible to read the advisory at openwall.com. The identification of this vulnerability is CVE-2016-2147 since 01/29/2016. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly 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†). Similar entries are available at VDB-96756, VDB-97860, VDB-104922 and VDB-108612. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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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: 153278
Researcher: Matt
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-2147 (🔍)
GCVE (CVE): GCVE-0-2016-2147
GCVE (VulDB): GCVE-100-96755
SecurityFocus: 72324 - BusyBox CVE-2014-9645 Local Security Bypass Vulnerability
OSVDB: - CVE-2016-2147 - BusyBox - Integer Overflow Issue

See also: 🔍

Entryinfo

Created: 02/09/2017 19:32
Updated: 11/12/2022 12:23
Changes: 02/09/2017 19:32 (71), 08/12/2020 18:48 (8), 11/12/2022 12:14 (5), 11/12/2022 12:23 (1)
Complete: 🔍
Cache ID: 216:2C4:103

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