VDB-239692 · CVE-2023-2680 · RHSA-2022:7967

Red Hat Enterprise Linux 9.1 Incomplete Fix CVE-2021-3750 use after free

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	$5k-$25k	0.00

Summaryinfo

A vulnerability described as critical has been identified in Red Hat Enterprise Linux 9.1. This affects an unknown part of the component Incomplete Fix CVE-2021-3750. Executing a manipulation can lead to an unknown weakness. This vulnerability is tracked as CVE-2023-2680. The attack is restricted to local execution. No exploit exists.

Detailsinfo

A vulnerability has been found in Red Hat Enterprise Linux 9.1 (Operating System) and classified as critical. This vulnerability affects an unknown code block of the component Incomplete Fix CVE-2021-3750. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

This CVE exists because of an incomplete fix for CVE-2021-3750. More specifically, the qemu-kvm package as released for Red Hat Enterprise Linux 9.1 via RHSA-2022:7967 included a version of qemu-kvm that was actually missing the fix for CVE-2021-3750.

The weakness was disclosed 09/14/2023 by Red Hat as RHSA-2022:7967. The advisory is shared for download at access.redhat.com. This vulnerability was named CVE-2023-2680 since 05/12/2023. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 10/11/2023).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Operating System

Vendor

Red Hat

Name

Enterprise Linux

Version

License

commercial

Website

Vendor: https://www.redhat.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 6.4
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.2
NVD Vector: 🔍

CNA Base Score: 7.5
CNA Vector (Red Hat, Inc.): 🔍

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: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/12/2023 🔍
09/14/2023 +125 days 🔍
09/14/2023 +0 days 🔍
10/11/2023 +27 days 🔍

Sourcesinfo

Vendor: redhat.com

Advisory: RHSA-2022:7967
Researcher: Red Hat
Status: Confirmed

CVE: CVE-2023-2680 (🔍)
GCVE (CVE): GCVE-0-2023-2680
GCVE (VulDB): GCVE-100-239692

Entryinfo

Created: 09/14/2023 07:26
Updated: 10/11/2023 15:59
Changes: 09/14/2023 07:26 (49), 10/11/2023 15:59 (12)
Complete: 🔍
Cache ID: 216::103