QEMU 5.0.0 hw/block/fdc.c fdctrl_write_data null pointer dereference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.3$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in QEMU 5.0.0. This affects the function fdctrl_write_data of the file hw/block/fdc.c. The manipulation leads to null pointer dereference. This vulnerability is listed as CVE-2020-25741. There is no available exploit.

Detailsinfo

A vulnerability was found in QEMU 5.0.0 (Virtualization Software) and classified as problematic. This issue affects the function fdctrl_write_data of the file hw/block/fdc.c. 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 summary by CVE is:

fdctrl_write_data in hw/block/fdc.c in QEMU 5.0.0 has a NULL pointer dereference via a NULL block pointer for the current drive.

The weakness was presented 10/02/2020 (oss-sec). It is possible to read the advisory at openwall.com. The identification of this vulnerability is CVE-2020-25741 since 09/18/2020. Technical details of the vulnerability are known, but there is no available exploit.

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

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.3

VulDB Base Score: 3.3
VulDB Temp Score: 3.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 3.2
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/18/2020 🔍
10/02/2020 +14 days 🔍
10/02/2020 +0 days 🔍
11/15/2020 +44 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: openwall.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-25741 (🔍)
GCVE (CVE): GCVE-0-2020-25741
GCVE (VulDB): GCVE-100-162203

Entryinfo

Created: 10/02/2020 14:09
Updated: 11/15/2020 16:37
Changes: 10/02/2020 14:09 (36), 10/02/2020 14:14 (4), 11/14/2020 09:37 (3), 11/15/2020 16:29 (1), 11/15/2020 16:37 (14)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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