Vulnerability Monitor

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CVE-2017-9521

The Comcast firmware on Cisco DPC3939 (firmware version dpc3939-P20-18-v303r20421733-160420a-CMCST); Cisco DPC3939 (firmware version dpc3939-P20-18-v303r20421746-170221a-CMCST); Cisco DPC3939B (firmware version dpc3939b-v303r204217-150321a-CMCST); Cisco DPC3941T (firmware version DPC3941_2.5s3_PROD_sey); and Arris TG1682G (eMTA&DOCSIS version 10.0.132.SIP.PC20.CT, software version TG1682_2.2p7s2_PROD_sey) devices allows remote attackers to execute arbitrary code via a specific (but unstated) exposed service. NOTE: the scope of this CVE does NOT include the concept of "Unnecessary Services" in general; the scope is only a single service that is unnecessarily exposed, leading to remote code execution. The details of that service might be disclosed at a later date.

Published

2017-07-31T03:29:00.973

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Primary
NVD-CWE-noinfo

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	cisco	dpc3939_firmware	dpc3939-p20-18-v303r20421733-160420a-cmcst	Yes
Hardware	cisco	dpc3939	-	No
Operating System	cisco	dpc3939_firmware	dpc3939-p20-18-v303r20421746-170221a-cmcst	Yes
Hardware	cisco	dpc3939	-	No
Operating System	cisco	dpc3939b_firmware	dpc3939b-v303r204217-150321a-cmcst	Yes
Hardware	cisco	dpc3939b	-	No
Operating System	cisco	dpc3941t_firmware	dpc3941_2.5s3_prod_sey	Yes
Hardware	cisco	dpc3941t	-	No
Operating System	commscope	arris_tg1682g_firmware	10.0.132.sip.pc20.ct	Yes
Operating System	commscope	arris_tg1682g_firmware	tg1682_2.2p7s2_prod_sey	Yes
Hardware	commscope	arris_tg1682g	-	No

References

https://github.com/BastilleResearch/CableTap/blob/master/doc/advisories/bastille-32.unnecessary-services.txt Exploit, Mitigation, Third Party Advisory ([email protected])
https://github.com/BastilleResearch/CableTap/blob/master/doc/advisories/bastille-32.unnecessary-services.txt Exploit, Mitigation, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)