EvilFontTool

EvilFontTool フォントベースの欺瞞ツール。レッドチーム、セキュリティ研究、その他何にでも。 EvilFontTool は、人間の読者にはまったく異なるテキストを表示しながら、機械可読なテキストを文書内に隠します。これはEvil Fonts （悪意のあるフォント）を使用して実現されます。Evil Fonts とは、コンピューターが解釈する文字とは異なる文字を表示することで意図的に閲覧者を欺くフォントです。フォントのグリフを再マッピングすることで、文書の表示上の文字は人間にはある内容を示し、ターミナル、AI システム、クリップボードへのコピー＆ペーストには別の内容が見えます。...

z80-sans

Z80 Sans 당신이 가장 좋아하는 디스어셈블러는 무엇인가요? 저는 폰트입니다: https://github.com/user-attachments/assets/bb6ceb18-c2fd-40a9-be4f-202321a214d9 이 폰트는 OpenType의 Glyph Substitution Table GSUB 및 Glyph Positioning Table GPOS를 광범위하게 사용하여 16진수 소문자 시퀀스를 디스어셈블된 Z80 명령어로 변환합니다. 테스트해보고 싶다면 ./test/z80-sans.ttf에서 사본을 사용할 수...

confusable-vision

confusable-vision 벡터 아웃라인 레이캐스팅을 사용한 경험적 글리프 유사도 점수 산정. 245개 시스템 폰트에서 유니코드 혼동 가능 문자 쌍을 렌더링하고, 폰트 아웃라인에서 직접 구조적 유사성을 측정래스터화 없음하며, 폰트별 연속 거리 점수가 포함된 점수 JSON 아티팩트를 생성합니다. 22,581개 문자와 12개 문자 체계에 걸쳐 5,260만 개의 단일 문자 비교 및 1억 9,000만 개의 다중 문자 비교에서 얻은 주요 결과: 249,976개의 고유 단일 문자 혼동 가능 쌍 245개 폰트, 12개 스크립트, 66...

CVE-2026-5281-CVE-2026-11057-fullchain

CVE-2026-5281+CVE-2026-11057 Android fullchain Device Pixel 7 Android 16 ARM64 Chromium version root@kitploit: commit 994c846bbd7a35241ba7c08158c13d66412a6993 HEAD - 146.0.7680.111, tag: 146.0.7680.111 Author: Roger McFarlane Date: Mon Mar 9 12:48:07 2026 -0700 Description Exploitation approach...

CVE-2025-27363-proof-of-concept

FreeType 2.13.0 をクラッシュさせる CVE-2025-27363 の概念実証です。 これは、可変フォントである Roboto Flex を変更し、'%' 文字 グリフ 8 が 0xfffd サブグリフからなる合成グリフになるようにしたものです。 編集されたフォントを FreeType 2.13.0（修正 前の最終バージョン）でレンダリングするとクラッシュし、ASAN が loadtruetypeglyph でヒープバッファオーバーフローを検出します。 root@kitploit: $ lldb ../repos2/freetype-demos/build2/ftmulti...

FreeRDP: FreeRDP: Denial of Service via heap out-of-bounds read

A heap out-of-bounds read vulnerability in FreeRDP allows an unauthenticated, malicious RDP server to cause a Denial of Service. By sending a specially crafted glyph fragment update, the server forces the client to read beyond its allocated memory, crashing the application...

FreeRDP: FreeRDP: Denial of Service via heap out-of-bounds read

A heap out-of-bounds read vulnerability in FreeRDP allows an unauthenticated, malicious RDP server to cause a Denial of Service. By sending a specially crafted glyph fragment update, the server forces the client to read beyond its allocated memory, crashing the application...

FreeRDP: FreeRDP: Denial of Service via heap out-of-bounds read

A heap out-of-bounds read vulnerability in FreeRDP allows an unauthenticated, malicious RDP server to cause a Denial of Service. By sending a specially crafted glyph fragment update, the server forces the client to read beyond its allocated memory, crashing the application...

CVE-2026-63275

A flaw was found in LibreOffice. When a user opens a specially crafted document containing embedded CFF fonts, a stack-based buffer overflow can occur when reading the hints of a glyph due to improper bounds checking. This issue can cause memory corruption, resulting in an application crash...

DEBIAN-CVE-2026-63275

LibreOffice can read CFF fonts, which may be embedded in documents. A stack buffer overflow existed when reading the hints of a glyph. The number of hints was checked against the wrong bound, so a glyph declaring more hints than the array can hold wrote past its end. In fixed versions the hint...

CVE-2026-63275

LibreOffice can read CFF fonts, which may be embedded in documents. A stack buffer overflow existed when reading the hints of a glyph. The number of hints was checked against the wrong bound, so a glyph declaring more hints than the array can hold wrote past its end. In fixed versions the hint...

CVE-2026-63275

LibreOffice is vulnerable to a stack buffer overflow when processing CFF fonts embedded in documents. The root cause is a bounds-checking error: the number of glyph hints was validated against the wrong limit, allowing a crafted glyph to declare more hints than the stack array could hold and writ...

CVE-2026-63275: Out-of-bounds Write

LibreOffice can read CFF fonts, which may be embedded in documents. A stack buffer overflow existed when reading the hints of a glyph. The number of hints was checked against the wrong bound, so a glyph declaring more hints than the array can hold wrote past its end. In fixed versions the hint...

FreeRDP: FreeRDP: Denial of Service via heap out-of-bounds read

A heap out-of-bounds read vulnerability in FreeRDP allows an unauthenticated, malicious RDP server to cause a Denial of Service. By sending a specially crafted glyph fragment update, the server forces the client to read beyond its allocated memory, crashing the application...

FreeRDP: FreeRDP: Denial of Service via heap out-of-bounds read

A heap out-of-bounds read vulnerability in FreeRDP allows an unauthenticated, malicious RDP server to cause a Denial of Service. By sending a specially crafted glyph fragment update, the server forces the client to read beyond its allocated memory, crashing the application...

Astra Linux – Vulnerability in xrdp

XRDPTRP is an open-source remote desktop protocol server. Access to the font glyphs in xrdppainter.c is not bounded. Since some of this data is controllable by the user, this can lead to an out-of-bounds read within the xrdp executable. The vulnerability allows for an out-of-bounds read within a...

Astra Linux – Vulnerability in xorg-server

A use-after-free vulnerability was discovered in the ProcRenderAddGlyphs function of Xorg servers. This issue arises when the AllocateGlyph function is called to store new glyphs sent by the client to the X server. As a result, multiple entries may point to the same non-refcounted glyphs...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: fbdev: bitblit: In the bitPutcs function, the bound-check glyph index was derived from the character value masked by 0xff or 0x1ff. This may lead to reading beyond the end of the built-in font array, exceeding the actual number o...

CVE-2026-44950

fsreadglyphs in the libXfont2 font-server client src/fc/fserve.c copies each glyph's bitmap into a single buffer. Existing checks validates only that the source slice position, length lies within the source bitmap buffer. It does not check whether the running destination cursor has exceeded the...

UBUNTU-CVE-2026-44950

fsreadglyphs in the libXfont2 font-server client src/fc/fserve.c copies each glyph's bitmap into a single buffer. Existing checks validates only that the source slice position, length lies within the source bitmap buffer. It does not check whether the running destination cursor has exceeded the...