CVE intelligence and bounded remediation

CVE-2017-8835 — Peplink B305Hw2 Firmware security vulnerability

Critical CVSS 9.8

SQL injection exists on Peplink Balance 305, 380, 580, 710, 1350, and 2500 devices with firmware before fw-b305hw2_380hw6_580hw2_710hw3_1350hw2_2500-7.0.1-build2093. An attack vector is the bauth cookie to cgi-bin/MANGA/admin.cgi. One impact is enumeration of user accounts by observing whether a session ID can be retrieved from the sessions database.

Severity
Critical
CVSS
9.8 (3.0)
Published
2017-06-05
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-89

Affected products

  • peplink / b305hw2_firmware / 7.0.1
  • peplink / 380hw6_firmware / 7.0.1
  • peplink / 580hw2_firmware / 7.0.1
  • peplink / 710hw3_firmware / 7.0.1
  • peplink / 1350hw2_firmware / 7.0.1
  • peplink / 2500_firmware / 7.0.1

Matched remediation archetype

SQL and data-query injection

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Check exposure

  • Trace request, message, file, and stored values into SQL, ORM query fragments, filters, sort expressions, and other data-query languages.
  • Inventory database roles, reachable schemas, multi-tenant boundaries, and whether stacked or administrative operations are enabled.
  • Check both direct queries and second-order use of previously stored values.

Remediate safely

  • Use parameterized queries or safe query builders for all values; map identifiers and operators through explicit allowlists.
  • Remove raw query concatenation and give the application account only the tables and operations it requires.
  • Update affected data-access components and add regression tests for query structure preservation with inert edge-case inputs.

Authoritative sources

Complete CVE record and remediation plan

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