VDB-240034 · CVE-2023-34322 · XSA-438

Xen on x86 Top-level Shadow Reference Privilege Escalation

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.
7.6	$0-$5k	0.00

A vulnerability has been found in Xen on x86 (Virtualization Software) (the affected version is unknown) and classified as critical. This vulnerability affects an unknown code of the component Top-level Shadow Reference Handler. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was shared 09/20/2023 as XSA-438. The advisory is available at xenbits.xen.org. This vulnerability was named CVE-2023-34322 since 06/01/2023. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/20/2023).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at xenbits.xen.org.

The entries VDB-245157, VDB-245158, VDB-247553 and VDB-251712 are related to this item.

Productinfo

Type

Virtualization Software

Name

License

open-source

CPE 2.3info

🔒

CPE 2.2info

🔒

CVSSv4info

VulDB CVSS-B Score: 🔒
VulDB CVSS-BT Score: 🔒
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.6

VulDB Base Score: 8.0
VulDB Temp Score: 7.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

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: 🔍

Exploitinginfo

Class: Privilege Escalation
CWE: Unknown
CAPEC: 🔒
ATT&CK: 🔒

Local: No
Remote: Partially

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: Patch
Status: 🔍

0-Day Time: 🔒

Patch: xenbits.xen.org

Timelineinfo

06/01/2023 CVE reserved
09/20/2023 +111 days Advisory disclosed
09/20/2023 +0 days VulDB entry created
09/20/2023 +0 days VulDB entry last update

Sourcesinfo

Advisory: XSA-438
Status: Confirmed

CVE: CVE-2023-34322 (🔒)
See also: 🔒

Entryinfo

Created: 09/20/2023 14:31
Changes: 09/20/2023 14:31 (39)
Complete: 🔍
Cache ID: 18:4D1:103