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CVE-2017-6094

N/A
Published: December 20, 2017 at 08:00 PM UTC
Updated: June 17, 2026 at 01:21 AM UTC
1 product affected across 1 vendorGaps

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Severity
N/A
Exploit prediction
EPSS 1%

Description

CPEs used by subscribers on the access network receive their individual configuration settings from a central GAPS instance. A CPE identifies itself by the MAC address of its WAN interface and a certain "chk" value (48bit) derived from the MAC. The algorithm used to compute the "chk" was disclosed by reverse engineering the CPE's firmware. As a result, it is possible to forge valid "chk" values for any given MAC address and therefore receive the configuration settings of other subscribers' CPEs. The configuration settings often contain sensitive values, for example credentials (username/password) for VoIP services. This issue affects Genexis B.V. GAPS up to 7.2.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Gaps· Genexis
95%
v < 7.2
Affected range stops below 7.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Mailing Listx_refsource_FULLDISCExploitMitigationThird Party Advisory
Source: [email protected]
http://seclists.org/fulldisclosure/2017/Dec/62

CVSS

5MEDIUM[email protected]
Confidentiality
PARTIAL
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-200

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