CVE-2026-13723: Develar app-builder, обхождане на път

Описание

Оригинално описание

A vulnerability in the `zipx.Unzip` extraction routine of Develar's app-builder allows an attacker to overwrite arbitrary files on macOS APFS by exploiting a Unicode Normalization Collision combined with symlink following behavior. APFS treats certain Unicode equivalent filenames as identical (e.g., ß ↔ ss), while app builder performs no canonical normalization before validating or writing paths. As a result, a crafted ZIP archive containing: • a symlink entry named ss pointing to a target file, and • a regular file named ß containing attacker controlled data, will cause the second write to follow the symlink and overwrite the target file.

Засегнати продукти

• Develar app-builder: до 4.2.0

Вид слабост

• CWE-22 Неправилно ограничаване на път до позволена директория
• CWE-59 Неправилно разрешаване на връзка преди достъп до файл

История

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-13723
• https://nvd.nist.gov/vuln/detail/CVE-2026-13723
• https://github.com/develar/app-builder
• http://kb.cert.org/vuls/id/293714
• https://github.com/develar/app-builder/pull/163
• https://www.kb.cert.org/vuls/id/293714