grub2 up to 2.05 Calculation Setparam_prefix out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in grub2 up to 2.05. Impacted is the function Setparam_prefix of the component Calculation Handler. Executing a manipulation can lead to out-of-bounds write. This vulnerability is handled as CVE-2021-20233. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in grub2 up to 2.05 and classified as critical. This vulnerability affects the function Setparam_prefix of the component Calculation Handler. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was released 03/04/2021. The advisory is available at bugzilla.redhat.com. This vulnerability was named CVE-2021-20233. Technical details are known, but there is no available exploit.

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). If you want to get best quality of vulnerability data, you may have to visit VulDB.

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

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / 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

12/17/2020 🔍
03/04/2021 +77 days 🔍
03/04/2021 +0 days 🔍
10/13/2024 +1319 days 🔍

Sourcesinfo

Advisory: bugzilla.redhat.com
Status: Confirmed

CVE: CVE-2021-20233 (🔍)
GCVE (CVE): GCVE-0-2021-20233
GCVE (VulDB): GCVE-100-170626

Entryinfo

Created: 03/04/2021 07:53
Updated: 10/13/2024 13:29
Changes: 03/04/2021 07:53 (38), 03/06/2021 15:03 (5), 03/14/2021 14:33 (18), 10/13/2024 13:29 (17)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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