CVE intelligence and bounded remediation

CVE-2017-2699 — Huawei Honor 7 Firmware security vulnerability

High CVSS 7.8

The Huawei Themes APP in versions earlier than PLK-UL00C17B385, versions earlier than CRR-L09C432B380, versions earlier than LYO-L21C577B128 has a privilege elevation vulnerability. An attacker could exploit this vulnerability to upload theme packs containing malicious files and trick users into installing the theme packets, resulting in the execution of arbitrary code.

Severity
High
CVSS
7.8 (3.0)
Published
2017-11-22
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-434

Affected products

  • huawei / honor_7_firmware
  • huawei / mate_s_firmware
  • huawei / lyo-l21_firmware

Matched remediation archetype

Path traversal, unsafe upload, and file handling

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Trace untrusted filenames, archive entries, URLs, and path segments into read, write, include, extraction, and upload operations.
  • Identify filesystem roots, mount permissions, symbolic-link behavior, archive handling, and whether uploaded content is web-accessible or executable.
  • Review canonicalization and containment checks across supported operating systems and storage backends.

Remediate safely

  • Generate server-side storage identifiers and resolve paths beneath a fixed root using filesystem-aware containment checks.
  • Reject absolute, parent-relative, alternate-separator, device, link, and archive entries that escape the intended root.
  • Store uploads outside executable or served paths, validate type and size, and use private atomic temporary files.

Authoritative sources

Complete CVE record and remediation plan

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