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CVE-2021-3697

Quick assessment

Affected
n/a grub2
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

grub2是GNU社区的一款Linux系统引导程序。 grub2 存在缓冲区错误漏洞，攻击者通过精心制作的JPEG图像利用该漏洞导致堆中的缓冲区下溢写入。

AI Predicted 7.8 Difficulty: Hard EPSS 0.46% · P37
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I. Basic Information for CVE-2021-3697

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A crafted JPEG image may lead the JPEG reader to underflow its data pointer, allowing user-controlled data to be written in heap. To a successful to be performed the attacker needs to perform some triage over the heap layout and craft an image with a malicious format and payload. This vulnerability can lead to data corruption and eventual code execution or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
grub2 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
grub2是GNU社区的一款Linux系统引导程序。 grub2 存在缓冲区错误漏洞，攻击者通过精心制作的JPEG图像利用该漏洞导致堆中的缓冲区下溢写入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- grub2 grub-2.06 -

II. Public POCs for CVE-2021-3697

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III. Intelligence Information for CVE-2021-3697

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Vendor Advisories for CVE-2021-3697 (3)

Same Patch Batch · n/a · 2022-07-06 · 30 CVEs total

CVE-2022-24141 iTop VPN 安全漏洞
CVE-2022-2318 Linux kernel 资源管理错误漏洞
CVE-2022-32290 Northern.tech Mender 安全漏洞
CVE-2022-30591 quic-go 资源管理错误漏洞
CVE-2022-32386 Tenda AC23 缓冲区错误漏洞
CVE-2022-32385 Tenda AC23 缓冲区错误漏洞
CVE-2022-32383 Tenda AC23 缓冲区错误漏洞
CVE-2021-31676 PESCMS 跨站脚本漏洞
CVE-2021-31677 PESCMS 跨站请求伪造漏洞
CVE-2021-31679 PESCMS 跨站请求伪造漏洞
CVE-2021-31678 PESCMS 跨站请求伪造漏洞
CVE-2022-28935 多款TOTOLINK产品命令注入漏洞
CVE-2022-24138 IOBit Advanced System Care (Asc.exe) 15、Action Download Center 安全漏洞
CVE-2022-24139 IOBit Advanced System Care Free 安全漏洞
CVE-2022-24140 多款IOBit产品安全漏洞
CVE-2021-4234 OpenVPN 安全漏洞
CVE-2022-30929 Mini-Tmall 安全漏洞
CVE-2021-3695 grub2 缓冲区错误漏洞
CVE-2021-3696 grub2 缓冲区错误漏洞
CVE-2022-33737 OpenVPN 日志信息泄露漏洞

Showing top 20 of 30 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: grub2
Same vendor: n/a
Same weakness: CWE-787

V. Comments for CVE-2021-3697

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