{"id":5411720,"name":"node-tar","ecosystem":"npm","description":"","homepage":null,"licenses":"ISC","normalized_licenses":["ISC"],"repository_url":"","keywords_array":[],"namespace":null,"versions_count":1,"first_release_published_at":"2022-11-08T17:36:15.299Z","latest_release_published_at":"2022-11-08T17:36:15.299Z","latest_release_number":"1.0.0","latest_published_release_number":"1.0.0","last_synced_at":"2026-10-28T16:22:14.132Z","created_at":"2022-11-10T02:54:42.853Z","updated_at":"2026-10-29T08:29:56.722Z","registry_url":"https://www.npmjs.com/package/node-tar","install_command":"npm install 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a, b and c until it reaches the last folder to create `foo.txt`, In-this case I noticed that there's no validation at all on the amount of folders being created, that said we're actually able to CPU and memory consume the system running node-tar and even crash the nodejs client within few seconds of running it using a path with too many sub-folders inside\n\n## Steps To Reproduce:\nYou can reproduce this issue by downloading the tar file I provided in the resources and using node-tar to extract it, you should get the same behavior as the video\n\n## Proof Of Concept:\nHere's a [video](https://hackerone-us-west-2-production-attachments.s3.us-west-2.amazonaws.com/3i7uojw8s52psar6pg8zkdo4h9io?response-content-disposition=attachment%3B%20filename%3D%22tar-dos-poc.webm%22%3B%20filename%2A%3DUTF-8%27%27tar-dos-poc.webm\u0026response-content-type=video%2Fwebm\u0026X-Amz-Algorithm=AWS4-HMAC-SHA256\u0026X-Amz-Credential=ASIAQGK6FURQSWWGDXHA%2F20240312%2Fus-west-2%2Fs3%2Faws4_request\u0026X-Amz-Date=20240312T080103Z\u0026X-Amz-Expires=3600\u0026X-Amz-Security-Token=IQoJb3JpZ2luX2VjEDcaCXVzLXdlc3QtMiJHMEUCID3xYDc6emXVPOg8iVR5dVk0u3gguTPIDJ0OIE%2BKxj17AiEAi%2BGiay1gGMWhH%2F031fvMYnSsa8U7CnpZpxvFAYqNRwgqsQUIQBADGgwwMTM2MTkyNzQ4NDkiDAaj6OgUL3gg4hhLLCqOBUUrOgWSqaK%2FmxN6nKRvB4Who3LIyzswFKm9LV94GiSVFP3zXYA480voCmAHTg7eBL7%2BrYgV2RtXbhF4aCFMCN3qu7GeXkIdH7xwVMi9zXHkekviSKZ%2FsZtVVjn7RFqOCKhJl%2FCoiLQJuDuju%2FtfdTGZbEbGsPgKHoILYbRp81K51zeRL21okjsOehmypkZzq%2BoGrXIX0ynPOKujxw27uqdF4T%2BF9ynodq01vGgwgVBEjHojc4OKOfr1oW5b%2FtGVV59%2BOBVI1hqIKHRG0Ed4SWmp%2BLd1hazGuZPvp52szmegnOj5qr3ubppnKL242bX%2FuAnQKzKK0HpwolqXjsuEeFeM85lxhqHV%2B1BJqaqSHHDa0HUMLZistMRshRlntuchcFQCR6HBa2c8PSnhpVC31zMzvYMfKsI12h4HB6l%2FudrmNrvmH4LmNpi4dZFcio21DzKj%2FRjWmxjH7l8egDyG%2FIgPMY6Ls4IiN7aR1jijYTrBCgPUUHets3BFvqLzHtPFnG3B7%2FYRPnhCLu%2FgzvKN3F8l38KqeTNMHJaxkuhCvEjpFB2SJbi2QZqZZbLj3xASqXoogzbsyPp0Tzp0tH7EKDhPA7H6wwiZukXfFhhlYzP8on9fO2Ajz%2F%2BTDkDjbfWw4KNJ0cFeDsGrUspqQZb5TAKlUge7iOZEc2TZ5uagatSy9Mg08E4nImBSE5QUHDc7Daya1gyqrETMDZBBUHH2RFkGA9qMpEtNrtJ9G%2BPedz%2FpPY1hh9OCp9Pg1BrX97l3SfVzlAMRfNibhywq6qnE35rVnZi%2BEQ1UgBjs9jD%2FQrW49%2FaD0oUDojVeuFFryzRnQxDbKtYgonRcItTvLT5Y0xaK9P0u6H1197%2FMk3XxmjD9%2Fb%2BvBjqxAQWWkKiIxpC1oHEWK9Jt8UdJ39xszDBGpBqjB6Tvt5ePAXSyX8np%2FrBi%2BAPx06O0%2Ba7pU4NmH800EVXxxhgfj9nMw3CeoUIdxorVKtU2Mxw%2FLaAiPgxPS4rqkt65NF7eQYfegcSYDTm2Z%2BHPbz9HfCaVZ28Zqeko6sR%2F29ML4bguqVvHAM4mWPLNDXH33mjG%2BuzLi8e1BF7tNveg2X9G%2FRdcMkojwKYbu6xN3M6aX2alQg%3D%3D\u0026X-Amz-SignedHeaders=host\u0026X-Amz-Signature=1e8235d885f1d61529b7d6b23ea3a0780c300c91d86e925dd8310d5b661ddbe2) show-casing the exploit: \n\n## Impact\n\nDenial of service by crashing the nodejs client when attempting to parse a tar archive, make it run out of heap memory and consuming server CPU and memory resources\n\n## Report resources\n[payload.txt](https://hackerone-us-west-2-production-attachments.s3.us-west-2.amazonaws.com/1e83ayb5dd3350fvj3gst0mqixwk?response-content-disposition=attachment%3B%20filename%3D%22payload.txt%22%3B%20filename%2A%3DUTF-8%27%27payload.txt\u0026response-content-type=text%2Fplain\u0026X-Amz-Algorithm=AWS4-HMAC-SHA256\u0026X-Amz-Credential=ASIAQGK6FURQSWWGDXHA%2F20240312%2Fus-west-2%2Fs3%2Faws4_request\u0026X-Amz-Date=20240312T080103Z\u0026X-Amz-Expires=3600\u0026X-Amz-Security-Token=IQoJb3JpZ2luX2VjEDcaCXVzLXdlc3QtMiJHMEUCID3xYDc6emXVPOg8iVR5dVk0u3gguTPIDJ0OIE%2BKxj17AiEAi%2BGiay1gGMWhH%2F031fvMYnSsa8U7CnpZpxvFAYqNRwgqsQUIQBADGgwwMTM2MTkyNzQ4NDkiDAaj6OgUL3gg4hhLLCqOBUUrOgWSqaK%2FmxN6nKRvB4Who3LIyzswFKm9LV94GiSVFP3zXYA480voCmAHTg7eBL7%2BrYgV2RtXbhF4aCFMCN3qu7GeXkIdH7xwVMi9zXHkekviSKZ%2FsZtVVjn7RFqOCKhJl%2FCoiLQJuDuju%2FtfdTGZbEbGsPgKHoILYbRp81K51zeRL21okjsOehmypkZzq%2BoGrXIX0ynPOKujxw27uqdF4T%2BF9ynodq01vGgwgVBEjHojc4OKOfr1oW5b%2FtGVV59%2BOBVI1hqIKHRG0Ed4SWmp%2BLd1hazGuZPvp52szmegnOj5qr3ubppnKL242bX%2FuAnQKzKK0HpwolqXjsuEeFeM85lxhqHV%2B1BJqaqSHHDa0HUMLZistMRshRlntuchcFQCR6HBa2c8PSnhpVC31zMzvYMfKsI12h4HB6l%2FudrmNrvmH4LmNpi4dZFcio21DzKj%2FRjWmxjH7l8egDyG%2FIgPMY6Ls4IiN7aR1jijYTrBCgPUUHets3BFvqLzHtPFnG3B7%2FYRPnhCLu%2FgzvKN3F8l38KqeTNMHJaxkuhCvEjpFB2SJbi2QZqZZbLj3xASqXoogzbsyPp0Tzp0tH7EKDhPA7H6wwiZukXfFhhlYzP8on9fO2Ajz%2F%2BTDkDjbfWw4KNJ0cFeDsGrUspqQZb5TAKlUge7iOZEc2TZ5uagatSy9Mg08E4nImBSE5QUHDc7Daya1gyqrETMDZBBUHH2RFkGA9qMpEtNrtJ9G%2BPedz%2FpPY1hh9OCp9Pg1BrX97l3SfVzlAMRfNibhywq6qnE35rVnZi%2BEQ1UgBjs9jD%2FQrW49%2FaD0oUDojVeuFFryzRnQxDbKtYgonRcItTvLT5Y0xaK9P0u6H1197%2FMk3XxmjD9%2Fb%2BvBjqxAQWWkKiIxpC1oHEWK9Jt8UdJ39xszDBGpBqjB6Tvt5ePAXSyX8np%2FrBi%2BAPx06O0%2Ba7pU4NmH800EVXxxhgfj9nMw3CeoUIdxorVKtU2Mxw%2FLaAiPgxPS4rqkt65NF7eQYfegcSYDTm2Z%2BHPbz9HfCaVZ28Zqeko6sR%2F29ML4bguqVvHAM4mWPLNDXH33mjG%2BuzLi8e1BF7tNveg2X9G%2FRdcMkojwKYbu6xN3M6aX2alQg%3D%3D\u0026X-Amz-SignedHeaders=host\u0026X-Amz-Signature=bad9fe731f05a63a950f99828125653a8c1254750fe0ca7be882e89ecdd449ae)\n[archeive.tar.gz](https://hackerone-us-west-2-production-attachments.s3.us-west-2.amazonaws.com/ymkuh4xnfdcf1soeyi7jc2x4yt2i?response-content-disposition=attachment%3B%20filename%3D%22archive.tar.gz%22%3B%20filename%2A%3DUTF-8%27%27archive.tar.gz\u0026response-content-type=application%2Fx-tar\u0026X-Amz-Algorithm=AWS4-HMAC-SHA256\u0026X-Amz-Credential=ASIAQGK6FURQSWWGDXHA%2F20240312%2Fus-west-2%2Fs3%2Faws4_request\u0026X-Amz-Date=20240312T080103Z\u0026X-Amz-Expires=3600\u0026X-Amz-Security-Token=IQoJb3JpZ2luX2VjEDcaCXVzLXdlc3QtMiJHMEUCID3xYDc6emXVPOg8iVR5dVk0u3gguTPIDJ0OIE%2BKxj17AiEAi%2BGiay1gGMWhH%2F031fvMYnSsa8U7CnpZpxvFAYqNRwgqsQUIQBADGgwwMTM2MTkyNzQ4NDkiDAaj6OgUL3gg4hhLLCqOBUUrOgWSqaK%2FmxN6nKRvB4Who3LIyzswFKm9LV94GiSVFP3zXYA480voCmAHTg7eBL7%2BrYgV2RtXbhF4aCFMCN3qu7GeXkIdH7xwVMi9zXHkekviSKZ%2FsZtVVjn7RFqOCKhJl%2FCoiLQJuDuju%2FtfdTGZbEbGsPgKHoILYbRp81K51zeRL21okjsOehmypkZzq%2BoGrXIX0ynPOKujxw27uqdF4T%2BF9ynodq01vGgwgVBEjHojc4OKOfr1oW5b%2FtGVV59%2BOBVI1hqIKHRG0Ed4SWmp%2BLd1hazGuZPvp52szmegnOj5qr3ubppnKL242bX%2FuAnQKzKK0HpwolqXjsuEeFeM85lxhqHV%2B1BJqaqSHHDa0HUMLZistMRshRlntuchcFQCR6HBa2c8PSnhpVC31zMzvYMfKsI12h4HB6l%2FudrmNrvmH4LmNpi4dZFcio21DzKj%2FRjWmxjH7l8egDyG%2FIgPMY6Ls4IiN7aR1jijYTrBCgPUUHets3BFvqLzHtPFnG3B7%2FYRPnhCLu%2FgzvKN3F8l38KqeTNMHJaxkuhCvEjpFB2SJbi2QZqZZbLj3xASqXoogzbsyPp0Tzp0tH7EKDhPA7H6wwiZukXfFhhlYzP8on9fO2Ajz%2F%2BTDkDjbfWw4KNJ0cFeDsGrUspqQZb5TAKlUge7iOZEc2TZ5uagatSy9Mg08E4nImBSE5QUHDc7Daya1gyqrETMDZBBUHH2RFkGA9qMpEtNrtJ9G%2BPedz%2FpPY1hh9OCp9Pg1BrX97l3SfVzlAMRfNibhywq6qnE35rVnZi%2BEQ1UgBjs9jD%2FQrW49%2FaD0oUDojVeuFFryzRnQxDbKtYgonRcItTvLT5Y0xaK9P0u6H1197%2FMk3XxmjD9%2Fb%2BvBjqxAQWWkKiIxpC1oHEWK9Jt8UdJ39xszDBGpBqjB6Tvt5ePAXSyX8np%2FrBi%2BAPx06O0%2Ba7pU4NmH800EVXxxhgfj9nMw3CeoUIdxorVKtU2Mxw%2FLaAiPgxPS4rqkt65NF7eQYfegcSYDTm2Z%2BHPbz9HfCaVZ28Zqeko6sR%2F29ML4bguqVvHAM4mWPLNDXH33mjG%2BuzLi8e1BF7tNveg2X9G%2FRdcMkojwKYbu6xN3M6aX2alQg%3D%3D\u0026X-Amz-SignedHeaders=host\u0026X-Amz-Signature=5e2c0d4b4de40373ac0fe91908c2659141a6dd4ab850271cc26042a3885c82ea)\n\n## Note\nThis report was originally reported to GitHub bug bounty program, they asked me to report it to you a month 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