Metalama: Local code execution via DLL planting in world-writable temporary directories (Linux/macOS)

Özet

Türkçe özeti henüz hazır değil; şimdilik kaynağın kendi açıklamasını gösteriyoruz.

Metalama is a Roslyn-based open-source patterns and architecture toolkit for C#. Prior to 2025.1.18, 2026.0.25 and 2026.1.19, Metalama.Framework and Metalama.Tool load and execute compile-time assemblies, auxiliary executable tools and embedded helper assemblies from predictable temporary directories. On Linux and macOS, the default Path.GetTempPath() location is world-writable, and existing artifacts are trusted based on sentinel or .completed marker files rather than integrity verification. A local unprivileged user on a shared machine or CI/build agent can pre-create the deterministic directory structure and plant a malicious DLL with the matching sentinel. When a higher-privileged developer or build account subsequently builds, Metalama skips regeneration and executes the planted artifact in the compiler, IDE or MSBuild process as the building user. This permits cross-user privilege escalation, reading source and secrets, supply-chain tampering with build output, or disrupting builds. Default Windows per-user temporary directories are protected by ACLs and are not affected. Deployer-selected insecure cache locations are outside the vulnerability's scope. This issue is fixed in versions 2025.1.18, 2026.0.25 and 2026.1.19.

Etkilenen sürümler1 yazılım

Kaynaklar9 kaynak

• CVE.org kaydı
• NVD kaydı
• github.com/…talama/security/advisories/GHSA-m6wq-39m7-9xpp Diğer
• github.com/metalama/Metalama/pull/1650 Diğer
• github.com/…ommit/09911349a916e82194b1cfaa6d0a38acad928fc9 Diğer
• github.com/…ommit/92c4feecfce86d18fcb007ab6d3a1b4383326a2e Diğer
• github.com/metalama/Metalama/releases/tag/release/2025.1.18 Diğer
• github.com/metalama/Metalama/releases/tag/release/2026.0.25 Diğer
• github.com/metalama/Metalama/releases/tag/release/2026.1.19 Diğer

Kayıt geçmişi

1. 30 Eki 2026 23:23Yayımlandı

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