Borg up to 1.0.8 Manifest Authentication cryptographic issue

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.
5.7	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Borg up to 1.0.8. It has been declared as critical. This issue affects some unknown processing of the component Manifest Authentication. Executing a manipulation can lead to cryptographic issue. This vulnerability is tracked as CVE-2016-10099. The attack can be launched remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Borg up to 1.0.8. It has been declared as critical. This vulnerability affects some unknown processing of the component Manifest Authentication. The manipulation with an unknown input leads to a cryptographic issue vulnerability. The CWE definition for the vulnerability is CWE-310. As an impact it is known to affect confidentiality, and integrity. CVE summarizes:

Borg (aka BorgBackup) before 1.0.9 has a flaw in the cryptographic protocol used to authenticate the manifest (list of archives), potentially allowing an attacker to spoof the list of archives.

The bug was discovered 12/20/2016. The weakness was disclosed 01/02/2017 by Ian Beer (Website). The advisory is shared for download at borgbackup.readthedocs.io. This vulnerability was named CVE-2016-10099 since 01/02/2017. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1600.

The vulnerability was handled as a non-public zero-day exploit for at least 13 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 1.0.9 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 95205†). The entry VDB-94913 is pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

• Borg

Version

• 1.0.0
• 1.0.1
• 1.0.2
• 1.0.3
• 1.0.4
• 1.0.5
• 1.0.6
• 1.0.7
• 1.0.8

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
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: Cryptographic issue
CWE: CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
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: Borg 1.0.9

Timelineinfo

12/20/2016 🔍
01/02/2017 +13 days 🔍
01/02/2017 +0 days 🔍
01/02/2017 +0 days 🔍
01/02/2017 +0 days 🔍
01/03/2017 +1 days 🔍
07/13/2020 +1287 days 🔍

Sourcesinfo

Advisory: borgbackup.readthedocs.io
Researcher: Ian Beer
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-10099 (🔍)
GCVE (CVE): GCVE-0-2016-10099
GCVE (VulDB): GCVE-100-94912
SecurityFocus: 95205 - Borg Backup CVE-2016-10099 Spoofing Vulnerability
OSVDB: - CVE-2016-10099 - BorgBackup - Spoofing Issue

See also: 🔍

Entryinfo

Created: 01/03/2017 14:42
Updated: 07/13/2020 17:40
Changes: 01/03/2017 14:42 (55), 07/13/2020 17:40 (11)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion

Interested in the pricing of exploits?

See the underground prices here!