Cyber Resilience

CVE-2021-25283

CriticalRCE

Published: 27 February 2021

Published
27 February 2021
Modified
21 November 2024
KEV Added
Patch
CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.1004 93.2th percentile
Risk Priority 26 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-25283 is a critical-severity Code Injection (CWE-94) vulnerability in Saltstack Salt. Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 6.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

An issue was discovered in through SaltStack Salt before 3002.5. The jinja renderer does not protect against server side template injection attacks.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

saltstack
salt
≤ 2015.8.10 · 2015.8.11 — 2015.8.13 · 2016.3.0 — 2016.3.4
fedoraproject
fedora
32, 33, 34
debian
debian linux
10.0, 11.0, 9.0

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-94

Makes persistent code injection into loaded programs impossible when the executable image itself resides on hardware-protected read-only media.

addresses: CWE-94

Dynamically generated code can be produced and executed inside the isolated chamber, preventing host compromise from code-injection payloads.

addresses: CWE-94

Validates inputs used in dynamic code generation to block injected directives.

addresses: CWE-94

Directly prevents execution of attacker-supplied code written into data memory regions.

References