grub2 up to 2.05 rmmod use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in grub2 up to 2.05. Impacted is an unknown function of the component rmmod. The manipulation leads to use after free. This vulnerability is referenced as CVE-2020-25632. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in grub2 up to 2.05. This issue affects an unknown code of the component rmmod. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability.

The weakness was published 03/04/2021. It is possible to read the advisory at bugzilla.redhat.com. The identification of this vulnerability is CVE-2020-25632. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 208609 (CentOS 7 : grub2 (RHSA-2021:0699)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.06 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (208609). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.2
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 208609
Nessus Name: CentOS 7 : grub2 (RHSA-2021:0699)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: grub2 2.06

Timelineinfo

09/16/2020 🔍
03/04/2021 +169 days 🔍
03/04/2021 +0 days 🔍
10/13/2024 +1319 days 🔍

Sourcesinfo

Advisory: bugzilla.redhat.com
Status: Confirmed

CVE: CVE-2020-25632 (🔍)
GCVE (CVE): GCVE-0-2020-25632
GCVE (VulDB): GCVE-100-170615

Entryinfo

Created: 03/04/2021 07:33
Updated: 10/13/2024 13:07
Changes: 03/04/2021 07:33 (37), 03/06/2021 14:21 (5), 03/14/2021 13:45 (18), 10/13/2024 13:07 (17)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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