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YARA · Signature Base (Florian Roth / Nextron)

SIGNATURE_BASE_EXPL_JSP_Commvault_CVE_2025_57791_Aug25_2

Detects potential exploit for WT-2025-0049, Post-Auth RCE with QCommand Path Traversal

ExploitSignature Base (Florian Roth / Nextron)Detection Rule License 1.1Compiles with YARA-X
Author
X__Junior
Date
2025-08-21
Modified
2026-05-15
Score / Quality
75 / 85

What this rule detects

Detects potential exploit for WT-2025-0049, Post-Auth RCE with QCommand Path Traversal

It defines 3 patterns (3 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
expl-jsp-commvault-cve-2025-57791-aug25-2.yarDetection Rule License 1.1
rule SIGNATURE_BASE_EXPL_JSP_Commvault_CVE_2025_57791_Aug25_2 : FILE
{
	meta:
		description = "Detects potential exploit for WT-2025-0049, Post-Auth RCE with QCommand Path Traversal"
		author = "X__Junior"
		id = "068e1598-bcde-579d-910a-449a7ad903d6"
		date = "2025-08-21"
		modified = "2026-05-15"
		reference = "https://labs.watchtowr.com/guess-who-would-be-stupid-enough-to-rob-the-same-vault-twice-pre-auth-rce-chains-in-commvault/"
		source_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/yara/expl_commvault_cve_2025_57791.yar#L65-L79"
		license_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/LICENSE"
		logic_hash = "3375a33556a9b479f0c170de6e06c80ab0277f1356e4ac44bfe51d6a65a578fe"
		score = 75
		quality = 85
		tags = "FILE"

	strings:
		$s1 = "<App_UpdateUserPropertiesRequest>" ascii
		$s2 = "<description>" ascii
		$s3 = "getMethod('getRuntime').invoke(null).exec(param.cmd)" ascii

	condition:
		filesize < 50KB and all of them
}

Strings (3 patterns)

IdentifierTypeValueModifiers
$s1text"<App_UpdateUserPropertiesRequest>"ascii
$s2text"<description>"ascii
$s3text"getMethod('getRuntime').invoke(null).exec(param.cmd)"ascii

Condition

filesize < 50KB and all of them

In plain words (Heuristic)

  • The file must be smaller than 50KB (a cheap guard that skips large files).
  • All patterns in the rule must match.

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Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.

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References

Licence & attribution

Author: X__Junior

Source repository: Signature Base (Florian Roth / Nextron) @ 94a1c48d7a

Licence: Detection Rule License 1.1 (repository licence)

Original rule

Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.

Rule id: 068e1598-bcde-579d-910a-449a7ad903d6

Tags:FILE

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