VDB-193325 · CVE-2021-44730 · USN-5292-1

snapd prior 2.54.3+18.04/2.54.3+20.04/2.54.3+21.10.1 link following

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.
7.5	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical has been found in snapd. Affected by this vulnerability is an unknown functionality. The manipulation leads to link following. This vulnerability is referenced as CVE-2021-44730. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in snapd and classified as critical. This issue affects some unknown processing. The manipulation with an unknown input leads to a link following vulnerability. Using CWE to declare the problem leads to CWE-59. The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. Impacted is confidentiality, integrity, and availability.

The weakness was published 02/18/2022 as USN-5292-1. The advisory is shared at ubuntu.com. The identification of this vulnerability is CVE-2021-44730 since 12/08/2021. Neither technical details nor an exploit are publicly available.

Upgrading to version 2.54.3+18.04, 2.54.3+20.04 or 2.54.3+21.10.1 eliminates this vulnerability.

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Productinfo

Name

snapd

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.5

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.8
CNA Vector (Canonical Ltd.): 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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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: 🔍

Exploitinginfo

Class: Link following
CWE: CWE-59
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: snapd 2.54.3+18.04/2.54.3+20.04/2.54.3+21.10.1

Timelineinfo

12/08/2021 🔍
02/18/2022 +72 days 🔍
02/18/2022 +0 days 🔍
02/19/2022 +1 days 🔍

Sourcesinfo

Advisory: USN-5292-1
Status: Confirmed

CVE: CVE-2021-44730 (🔍)
GCVE (CVE): GCVE-0-2021-44730
GCVE (VulDB): GCVE-100-193325

Entryinfo

Created: 02/18/2022 09:17
Updated: 02/19/2022 14:55
Changes: 02/18/2022 09:17 (47), 02/19/2022 14:55 (1)
Complete: 🔍
Cache ID: 216::103