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Description

Multiple cross-site scripting (XSS) vulnerabilities in D-Link DSL-2760U Gateway (Rev. E1) allow remote authenticated users to inject arbitrary web script or HTML via the (1) ntpServer1 parameter to sntpcfg.cgi, username parameter to (2) ddnsmngr.cmd or (3) todmngr.tod, (4) TodUrlAdd parameter to urlfilter.cmd, (5) appName parameter to scprttrg.cmd, (6) fltName in an add action or (7) rmLst parameter in a remove action to scoutflt.cmd, (8) groupName parameter to portmapcfg.cmd, (9) snmpRoCommunity parameter to snmpconfig.cgi, (10) fltName parameter to scinflt.cmd, (11) PolicyName in an add action or (12) rmLst parameter in a remove action to prmngr.cmd, (13) ippName parameter to ippcfg.cmd, (14) smbNetBiosName or (15) smbDirName parameter to samba.cgi, or (16) wlSsid parameter to wlcfg.wl.

In plain language

AI Act now

D-Link DSL-2760U firmware before 1.12 has a flaw attackers have used, so businesses running this gateway should replace or update it now.

Executive summary

Authenticated stored XSS in D-Link DSL-2760U Gateway Rev. E1 management endpoints permits arbitrary script or HTML injection through multiple configuration parameters.

If affected, business impact
Router settings manipulationStolen administrator sessionsNetwork access disruptionMalicious website redirects

What to do now

  1. Check whether you use a D-Link DSL-2760U gateway and view its firmware version in the device administration page.
  2. Upgrade D-Link DSL-2760U firmware to version 1.12 following D-Link's instructions.
  3. If an update cannot be installed, remove internet access to the administration page and restrict it to trusted staff networks.
  4. Change gateway administrator passwords and review saved configuration names and fields for unfamiliar entries.
Patch / advisory Usually a quick update

CVSS Vector Breakdown

AV:NAC:LPR:LUI:RS:CC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None

Weaknesses

Affected Products

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Exploitability

CISA Known Exploited Vulnerability
Added to KEV:Mar 25, 2022
Remediation due:Apr 15, 2022

Required action: Apply updates per vendor instructions.

2 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Execution
Initial Access
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References

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