Solana rBPF 0.2.26/0.2.27 sdiv Instruction calculation

EntryeditHistoryDiffjsonxmlCTI

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.
9.3	$0-$5k	0.17

A vulnerability was found in Solana rBPF 0.2.26/0.2.27. It has been declared as very critical. Affected by this vulnerability is an unknown code block of the component sdiv Instruction Handler. The CWE definition for the vulnerability is CWE-682. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In Solana rBPF versions 0.2.26 and 0.2.27 are affected by Incorrect Calculation which is caused by improper implementation of sdiv instruction. This can lead to the wrong execution path, resulting in huge loss in specific cases. For example, the result of a sdiv instruction may decide whether to transfer tokens or not. The vulnerability affects both integrity and may cause serious availability problems.

The weakness was disclosed 05/09/2022 as e61e045f8c244de978401d186dcfd50838817297. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2022-23066 since 01/10/2022. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/11/2022).

Applying the patch e61e045f8c244de978401d186dcfd50838817297 is able to eliminate this problem. The bugfix is ready for download at github.com.

Productinfoedit

Vendor

Solana

Name

rBPF

CPE 2.3infoedit

CPE 2.2infoedit

CVSSv3infoedit

VulDB Meta Base Score: 9.5
VulDB Meta Temp Score: 9.3

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.1
CNA Vector (WhiteSource): 🔒

CVSSv2infoedit

AV	AC	Au	C	I	A
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🔍	🔍	🔍	🔍	🔍	🔍
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfoedit

Class: Unknown
CWE: CWE-682
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Threat Intelligenceinfoedit

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

Countermeasuresinfoedit

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: e61e045f8c244de978401d186dcfd50838817297

Timelineinfoedit

01/10/2022 CVE reserved
05/09/2022 +118 days Advisory disclosed
05/09/2022 +0 days VulDB entry created
05/11/2022 +2 days VulDB last update

Sourcesinfoedit

Advisory: e61e045f8c244de978401d186dcfd50838817297
Status: Confirmed

CVE: CVE-2022-23066 (🔒)

Entryinfoedit

Created: 05/09/2022 02:15 PM
Updated: 05/11/2022 03:37 PM
Changes: (1) source_cve_nvd_summary
Complete: 🔍