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SEKOIA_Exploit_Linux_Eop_Cve20177308_Strings

Detects CVE-2017-7308 exploit

ExploitSEKOIA.IO CommunityDetection Rule License 1.1Compiles with YARA-X
Author
Sekoia.io
Date
2023-12-08
Modified
2024-12-19
Score / Quality
75 / 80

What this rule detects

Detects CVE-2017-7308 exploit

Targets: Linux ELF.

It defines 4 patterns (4 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

exploit-linux-eop-cve20177308-strings.yarDetection Rule License 1.1
rule SEKOIA_Exploit_Linux_Eop_Cve20177308_Strings : CVE_2017_7308 FILE
{
	meta:
		description = "Detects CVE-2017-7308 exploit"
		author = "Sekoia.io"
		id = "72d225dd-386c-47d5-afb3-c6712c0bdd9a"
		date = "2023-12-08"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/exploit_linux_eop_cve20177308_strings.yar#L1-L18"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "c9fd605ced8bb2c3861f642cdc08b99b320ee19658ce60f1b9679a1ccc427bf7"
		score = 75
		quality = 80
		tags = "CVE-2017-7308, FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$ = "[.] SMEP & SMAP bypass enabled, turning them off"
		$ = "[.] done, SMEP & SMAP should be off now"
		$ = "[.] executing get root payload %p"
		$ = "[.] done, should be root now"

	condition:
		uint32be( 0 ) == 0x7f454c46 and filesize < 1MB and all of them
}

Strings (4 patterns)

IdentifierTypeValueModifiers
$text"[.] SMEP & SMAP bypass enabled, turning them off"
$text"[.] done, SMEP & SMAP should be off now"
$text"[.] executing get root payload %p"
$text"[.] done, should be root now"

Condition

uint32be( 0 ) == 0x7f454c46 and filesize < 1MB and all of them

In plain words (Heuristic)

  • The file must start with the ELF header — a Linux/Unix executable.
  • The file must be smaller than 1MB (a cheap guard that skips large files).
  • All patterns in the rule must match.

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References

Licence & attribution

Author: Sekoia.io

Source repository: SEKOIA.IO Community @ a438a5901a

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: 72d225dd-386c-47d5-afb3-c6712c0bdd9a

Metadata

version1.0
classificationTLP:CLEAR

Tags:CVE_2017_7308FILE