Remote code execution via unsandboxed Jinja templates
Published Feb 27, 2021 · Updated Aug 3, 2024
Server-side template injection in SaltStack Salt before 3002.5 allows remote attackers to execute code through the Jinja renderer. The renderer evaluates attacker-controlled Jinja syntax without enabling safe mode, allowing template expressions to access unsafe objects. Exploitation requires a path that writes a crafted template into a pillar root, such as the Salt API directory-traversal path identified by SaltStack.
Summary
What happened
Server-side template injection in SaltStack Salt before 3002.5 allows remote attackers to execute code through the Jinja renderer. The renderer evaluates attacker-controlled Jinja syntax without enabling safe mode, allowing template expressions to access unsafe objects. Exploitation requires a path that writes a crafted template into a pillar root, such as the Salt API directory-traversal path identified by SaltStack.
The record
- CVE
- CVE-2021-25283
- Published
- Feb 27, 2021
- Updated
- Aug 3, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 27, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
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What is affected?
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Published CVSS scores
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Attacks
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Public exploit references
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Technologies
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