VDB-128667 · CVE-2018-17161 · BID 106292

FreeBSD up to 11.2/12.0 bootp Packet input validation

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.
7.7$0-$5k0.00

Summaryinfo

A vulnerability was found in FreeBSD up to 11.2/12.0. It has been rated as critical. Affected by this vulnerability is an unknown functionality of the component bootp. Performing a manipulation as part of Packet results in input validation. This vulnerability is reported as CVE-2018-17161. The attacker must have access to the local network to execute the attack. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in FreeBSD up to 11.2/12.0 (Operating System). This affects an unknown function of the component bootp. The manipulation as part of a Packet leads to a input validation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In FreeBSD before 11.2-STABLE(r348229), 11.2-RELEASE-p7, 12.0-STABLE(r342228), and 12.0-RELEASE-p1, insufficient validation of network-provided data in bootpd may make it possible for a malicious attacker to craft a bootp packet which could cause a stack buffer overflow. It is possible that the buffer overflow could lead to a Denial of Service or remote code execution.

The bug was discovered 12/19/2018. The weakness was disclosed 01/03/2019 by Reno Robert (Website). It is possible to read the advisory at security.freebsd.org. This vulnerability is uniquely identified as CVE-2018-17161 since 09/18/2018. The attack needs to approached within the local network. No form of authentication is needed for 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 15 days. During that time the estimated underground price was around $5k-$25k.

Upgrading to version 11.2-STABLE(r348229), 11.2-RELEASE-p7, 12.0-STABLE(r342228) or 12.0-RELEASE-p1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 106292†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

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

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: FreeBSD 11.2-STABLE(r348229)/11.2-RELEASE-p7/12.0-STABLE(r342228)/12.0-RELEASE-p1

Timelineinfo

09/18/2018 🔍
12/19/2018 +92 days 🔍
12/19/2018 +0 days 🔍
01/03/2019 +15 days 🔍
01/03/2019 +0 days 🔍
01/04/2019 +1 days 🔍
04/26/2020 +478 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: security.freebsd.org
Researcher: Reno Robert
Status: Not defined

CVE: CVE-2018-17161 (🔍)
GCVE (CVE): GCVE-0-2018-17161
GCVE (VulDB): GCVE-100-128667
SecurityFocus: 106292 - FreeBSD bsnmpd 'bootpd' Remote Stack Buffer Overflow Vulnerability

Entryinfo

Created: 01/04/2019 12:20
Updated: 04/26/2020 06:56
Changes: 01/04/2019 12:20 (61), 04/26/2020 06:56 (4)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!