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CNVD-2025-08319
Vulnerability from cnvd - Published: 2025-04-21
VLAI Severity ?
Title
GNU GRUB2缓冲区溢出漏洞（CNVD-2025-08319）
Description
GRUB2是GNU项目的多重引导加载程序。
GNU GRUB2存在缓冲区溢出漏洞，该漏洞源于将用户控制的环境变量数据复制到内部缓冲区时，未能正确考虑环境变量的长度，导致越界写入。目前没有详细的漏洞细节提供。
Severity
中
Patch Name
GNU GRUB2缓冲区溢出漏洞（CNVD-2025-08319）的补丁
Patch Description
GRUB2是GNU项目的多重引导加载程序。
GNU GRUB2存在缓冲区溢出漏洞，该漏洞源于将用户控制的环境变量数据复制到内部缓冲区时，未能正确考虑环境变量的长度，导致越界写入。目前没有详细的漏洞细节提供。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。
Formal description
目前厂商已发布升级程序修复该安全问题，详情见厂商官网: https://www.gnu.org/software/grub/grub-download.html
Reference
https://nvd.nist.gov/vuln/detail/CVE-2025-0624
Impacted products
| Name | GNU GRUB2 |
|---|
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CVE-2025-0624 (GCVE-0-2025-0624)
Vulnerability from cvelistv5 – Published: 2025-02-19 18:23 – Updated: 2025-11-24 19:53
VLAI?
EPSS
Summary
A flaw was found in grub2. During the network boot process, when trying to search for the configuration file, grub copies data from a user controlled environment variable into an internal buffer using the grub_strcpy() function. During this step, it fails to consider the environment variable length when allocating the internal buffer, resulting in an out-of-bounds write. If correctly exploited, this issue may result in remote code execution through the same network segment grub is searching for the boot information, which can be used to by-pass secure boot protections.
Severity ?
7.6 (High)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Affected:
0 , ≤ 2.12
(semver)
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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"url": "https://access.redhat.com/errata/RHSA-2025:2799"
},
{
"name": "RHSA-2025:2867",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2025:2867"
},
{
"name": "RHSA-2025:2869",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2025:2869"
},
{
"name": "RHSA-2025:3297",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2025:3297"
},
{
"name": "RHSA-2025:3301",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2025:3301"
},
{
"name": "RHSA-2025:3367",
"tags": [
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"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2025:3367"
},
{
"name": "RHSA-2025:3396",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2025:3396"
},
{
"name": "RHSA-2025:3573",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2025:3573"
},
{
"name": "RHSA-2025:3577",
"tags": [
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],
"url": "https://access.redhat.com/errata/RHSA-2025:3577"
},
{
"name": "RHSA-2025:3780",
"tags": [
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"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2025:3780"
},
{
"name": "RHSA-2025:4422",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2025:4422"
},
{
"name": "RHSA-2025:7702",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2025:7702"
},
{
"tags": [
"vdb-entry",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/security/cve/CVE-2025-0624"
},
{
"name": "RHBZ#2346112",
"tags": [
"issue-tracking",
"x_refsource_REDHAT"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2346112"
}
],
"timeline": [
{
"lang": "en",
"time": "2025-02-17T14:35:38.127000+00:00",
"value": "Reported to Red Hat."
},
{
"lang": "en",
"time": "2025-02-18T18:00:00+00:00",
"value": "Made public."
}
],
"title": "Grub2: net: out-of-bounds write in grub_net_search_config_file()",
"workarounds": [
{
"lang": "en",
"value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."
}
],
"x_redhatCweChain": "CWE-787: Out-of-bounds Write"
}
},
"cveMetadata": {
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"assignerShortName": "redhat",
"cveId": "CVE-2025-0624",
"datePublished": "2025-02-19T18:23:21.463Z",
"dateReserved": "2025-01-21T16:49:51.381Z",
"dateUpdated": "2025-11-24T19:53:36.506Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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