Backblaze prior 7.0.0.439 privileges management

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.
7.9$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Backblaze. The affected element is an unknown function. This manipulation causes privileges management. This vulnerability is tracked as CVE-2020-8152. The attack is possible to be carried out remotely. Moreover, an exploit is present. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Backblaze and classified as critical. Affected by this vulnerability is some unknown processing. The manipulation with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality, integrity, and availability.

The bug was discovered 03/13/2020. The weakness was disclosed 09/08/2020 as confirmed mailinglist post (Full-Disclosure). It is possible to read the advisory at seclists.org. The public release has been coordinated in cooperation with the project team. This vulnerability is known as CVE-2020-8152. The attack can be launched remotely. Required for exploitation is a single 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.

After immediately, there has been an exploit disclosed. It is possible to download the exploit at seclists.org. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 40 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 7.0.0.439 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The entry VDB-161166 is pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

Video

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 7.9

VulDB Base Score: 8.8
VulDB Temp Score: 7.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exploit Delay Time: 🔍

Upgrade: Backblaze 7.0.0.439

Timelineinfo

03/13/2020 🔍
03/13/2020 +0 days 🔍
04/22/2020 +40 days 🔍
09/08/2020 +139 days 🔍
09/08/2020 +0 days 🔍
09/12/2020 +4 days 🔍
09/12/2020 +0 days 🔍

Sourcesinfo

Advisory: seclists.org
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2020-8152 (🔍)
GCVE (CVE): GCVE-0-2020-8152
GCVE (VulDB): GCVE-100-161167
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 09/12/2020 10:37
Updated: 09/12/2020 10:42
Changes: 09/12/2020 10:37 (48), 09/12/2020 10:42 (1)
Complete: 🔍
Cache ID: 216::103

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