CVE detail
CVE-2022-3775
When rendering certain unicode sequences, grub2's font code doesn't proper validate if the informed glyph's width and height is constrained within bitmap size. As consequence an attacker can craft an input which will lead to a out-of-bounds write into grub2's heap, leading to memory corruption and availability issues. Although complex, arbitrary code execution could not be discarded.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 6.9 · diversity 5.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
1 source links · newest first
- Microsoft Patch Tuesday security updates for August 2024 addressed six actively exploited bugsSecurity Affairs
Microsoft’s August 2024 Patch Tuesday addressed 90 vulnerabilities, including six that are actively exploited. Patch Tuesday security updates for August 2024 addressed 90 vulnerabilities in Microsoft products including Windows and Windows Components; Office and Office Components; .NET and Visual Studio; Azure; Co-Pilot; Microsoft Dynamics; Teams; and Secure Boot and others, bringing the total to 102 […]
newssecurityaffairs.comAug 14, 2024, 7:13 AM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
Related records
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A flaw was found in grub2. The calculation of the translation buffer when reading a language .mo file in grub_gettext_getstr_from_position() may overflow, leading to a Out-of-boun…
- CVE-2023-4692CVSS 7.5 · High
An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker to present a specially crafted NTFS filesystem image, leading to grub's h…
- CVE-2021-3697CVSS 7.0 · High
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 need…
- CVE-2021-3696CVSS 4.5 · Medium
A heap out-of-bounds write may heppen during the handling of Huffman tables in the PNG reader. This may lead to data corruption in the heap space. Confidentiality, Integrity and A…
- CVE-2021-3695CVSS 4.5 · Medium
A crafted 16-bit grayscale PNG image may lead to a out-of-bounds write in the heap area. An attacker may take advantage of that to cause heap data corruption or eventually arbitra…