snapd up to 2.37.3 access control

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.
6.6$0-$5k0.00

Summaryinfo

A vulnerability has been found in snapd up to 2.37.3 and classified as critical. This impacts an unknown function. This manipulation causes access control. This vulnerability appears as CVE-2019-7303. The attack may be initiated remotely. In addition, an exploit is available. The affected component should be upgraded. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Detailsinfo

A vulnerability was found in snapd up to 2.37.3. It has been declared as critical. Affected by this vulnerability is an unknown part. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability.

The bug was discovered 03/22/2019. The weakness was presented 03/22/2019 as SNYK-LINUX-SNAPD-441192 as confirmed entry (snyk.io Vulnerability DB). It is possible to read the advisory at snyk.io. This vulnerability is known as CVE-2019-7303 since 02/01/2019. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK. The advisory points out:

Overview The snapd seccomp filter is configured to block ioctl(..., TIOCSTI, ...) but in snapd < 2.37.4 this could be circumvented on 64 bit architectures by setting any high bits in the 2nd argument to ioctl. Do your applications use this vulnerable package? Test your applications CVE CVE-2019-7303 Snyk ID SNYK-LINUX-SNAPD-441192 Published 22 Mar, 2019 Ready to get started? Snyk helps you use open source and stay secure. Sign up for free

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197401 (Ubuntu Security Notification for Snapd Vulnerability (USN-3917-1)).

Upgrading to version 2.37.4 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 5.7
CNA Vector (Canonical Ltd.): 🔍

CVSSv2info

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: snapd 2.37.4

Timelineinfo

02/01/2019 🔍
03/22/2019 +49 days 🔍
03/22/2019 +0 days 🔍
03/25/2019 +3 days 🔍
12/22/2024 +2099 days 🔍

Sourcesinfo

Advisory: SNYK-LINUX-SNAPD-441192
Status: Confirmed

CVE: CVE-2019-7303 (🔍)
GCVE (CVE): GCVE-0-2019-7303
GCVE (VulDB): GCVE-100-132163
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/25/2019 12:14 PM
Updated: 12/22/2024 08:39 PM
Changes: 03/25/2019 12:14 PM (57), 05/19/2020 04:17 PM (2), 08/04/2023 08:05 PM (5), 08/04/2023 08:13 PM (12), 12/22/2024 08:39 PM (22)
Complete: 🔍
Cache ID: 244:C9C:40

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!