VDB-201134 · CVE-2022-29694 · Issue 1588

Unicorn Engine up to 2.0.0-rc7 qemu_ram_free null pointer dereference

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.
3.4	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Unicorn Engine up to 2.0.0-rc7. Affected is the function qemu_ram_free. Such manipulation leads to null pointer dereference. This vulnerability is traded as CVE-2022-29694. There is no exploit available. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Unicorn Engine up to 2.0.0-rc7. Affected by this issue is the function qemu_ram_free. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability.

The weakness was shared 06/03/2022 as 1588. The advisory is available at github.com. This vulnerability is handled as CVE-2022-29694 since 04/25/2022. Technical details are known, but there is no available exploit.

Applying the patch 3d3deac5e6d38602b689c4fef5dac004f07a2e63 is able to eliminate this problem. The bugfix is ready for download at github.com.

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Productinfo

Vendor

Unicorn

Name

Engine

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
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: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
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: 3d3deac5e6d38602b689c4fef5dac004f07a2e63

Timelineinfo

04/25/2022 🔍
06/03/2022 +39 days 🔍
06/03/2022 +0 days 🔍
06/06/2022 +3 days 🔍

Sourcesinfo

Advisory: 1588
Status: Confirmed

CVE: CVE-2022-29694 (🔍)
GCVE (CVE): GCVE-0-2022-29694
GCVE (VulDB): GCVE-100-201134

Entryinfo

Created: 06/03/2022 09:31
Updated: 06/06/2022 07:45
Changes: 06/03/2022 09:31 (41), 06/06/2022 07:45 (1)
Complete: 🔍
Cache ID: 216::103