CyberSecBulletin
CVE-2023-7263NVD status: Deferred

HarmonyOS AILife Solution 8.0: Path Traversal: '.../...//'

Published Updated By the CyberSecBulletin desk

CVE-2023-7263 is a high-severity path traversal: '.../...//' vulnerability in HarmonyOS AILife Solution 8.0 from Huawei, with a CVSS 3.1 base score of 7.3 out of 10. It can be exploited from the same local network by an attacker with a low-privileged account, without any action from a user. Affected HarmonyOS AILife Solution 8.0 versions: HarmonyOS AILife Audio Service 3.0.2.307. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.28% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Check which version of HarmonyOS AILife Solution 8.0 you run against the affected versions below, and install the vendor's latest release.
  2. Read the advisory on huawei.com for workarounds and exact fixed builds.

Affected products and versions

VendorProductAffected versionsFixed in
HuaweiHarmonyOS AILife Solution 8.0HarmonyOS AILife Audio Service 3.0.2.307Not stated

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
AdjacentThe attacker must be on the same local network segment.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
LowA basic user account is enough.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
NoneNo data is disclosed.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H. Scored by CNA (huawei.com).

Official description

Some Huawei home music system products have a path traversal vulnerability. Successful exploitation of this vulnerability may cause unauthorized file deletion or file permission change.(Vulnerability ID:HWPSIRT-2023-53450) This vulnerability has been assigned a (CVE)ID:CVE-2023-7263

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Path Traversal: '.../...//'

The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize '.../...//' (doubled triple dot slash) sequences that can resolve to a location that is outside of that directory.

How developers prevent this class of flaw

  • Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174). Such errors could be used to bypass allowlist validation schemes by introducing dangerous inputs after they have been checked.

More Path Traversal: '.../...//' vulnerabilities (CWE-35)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
  3. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in HarmonyOS AILife Solution 8.0

All HarmonyOS AILife Solution 8.0 vulnerabilities

Recent Path Traversal: '.../...//' vulnerabilities

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