Acronis Cyber Backup up to 12.5 Build 16341 server-side request forgery

HistoryDiffrelatejsonxmlCTI

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.
7.4	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical was found in Acronis Cyber Backup up to 12.5 Build 16341. This affects an unknown part. The manipulation results in server-side request forgery. This vulnerability was named CVE-2020-16171. The attack may be performed from remote. In addition, an exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical has been found in Acronis Cyber Backup up to 12.5 Build 16341 (Backup Software). Affected is an unknown function. The manipulation with an unknown input leads to a server-side request forgery vulnerability. CWE is classifying the issue as CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in Acronis Cyber Backup before 12.5 Build 16342. Some API endpoints on port 9877 under /api/ams/ accept an additional custom Shard header. The value of this header is afterwards used in a separate web request issued by the application itself. This can be abused to conduct SSRF attacks against otherwise unreachable Acronis services that are bound to localhost such as the NotificationService on 127.0.0.1:30572.

The bug was discovered 07/30/2020. The weakness was presented 09/14/2020 as confirmed mailinglist post (Full-Disclosure). The advisory is available at seclists.org. This vulnerability is traded as CVE-2020-16171. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are unknown but a public exploit is available.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 46 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 12.5 Build 16342 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Exploit-DB (49113). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Backup Software

Vendor

Acronis

Name

Cyber Backup

Version

12.5 Build 16341

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.4

VulDB Base Score: 8.3
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

Researcher Base Score: 8.3
Researcher Vector: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

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: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Server-side request forgery
CWE: CWE-918
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: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Cyber Backup 12.5 Build 16342

Timelineinfo

07/30/2020 🔍
07/30/2020 +0 days 🔍
09/14/2020 +46 days 🔍
09/21/2020 +7 days 🔍
10/12/2024 +1482 days 🔍

Sourcesinfo

Advisory: seclists.org
Status: Confirmed

CVE: CVE-2020-16171 (🔍)
GCVE (CVE): GCVE-0-2020-16171
GCVE (VulDB): GCVE-100-161658
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 09/21/2020 08:53
Updated: 10/12/2024 15:27
Changes: 09/21/2020 08:53 (52), 09/21/2020 08:58 (18), 10/12/2024 15:27 (24)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.