CyberSecBulletin
CVE-2024-20128NVD status: Analyzed

MT6580, MT6739, MT6761, MT6765, MT6768…: Out-of-bounds Read

Published Updated By the CyberSecBulletin desk

CVE-2024-20128 is a high-severity out-of-bounds read vulnerability in MT6580, MT6739, MT6761, MT6765, MT6768, MT6779, MT6781, MT6785, MT6789, MT6833, MT6835, MT6853, MT6855, MT6873, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6896, MT6897, MT6983, MT6985, MT6989, MT8321, MT8666, MT8667, MT8673, MT8678, MT8765, MT8766, MT8766R, MT8768, MT8771, MT8781, MT8786, MT8788, MT8788E, MT8791T, MT8797, MT8798, MT8863T from MediaTek, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected MT6580, MT6739, MT6761, MT6765, MT6768, MT6779, MT6781, MT6785, MT6789, MT6833, MT6835, MT6853, MT6855, MT6873, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6896, MT6897, MT6983, MT6985, MT6989, MT8321, MT8666, MT8667, MT8673, MT8678, MT8765, MT8766, MT8766R, MT8768, MT8771, MT8781, MT8786, MT8788, MT8788E, MT8791T, MT8797, MT8798, MT8863T versions: Android 13.0, 14.0, 15.0. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.31% 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 MT6580, MT6739, MT6761, MT6765, MT6768, MT6779, MT6781, MT6785, MT6789, MT6833, MT6835, MT6853, MT6855, MT6873, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6896, MT6897, MT6983, MT6985, MT6989, MT8321, MT8666, MT8667, MT8673, MT8678, MT8765, MT8766, MT8766R, MT8768, MT8771, MT8781, MT8786, MT8788, MT8788E, MT8791T, MT8797, MT8798, MT8863T you run against the affected versions below, and install the vendor's latest release.
  2. Read the advisory on corp.mediatek.com for workarounds and exact fixed builds.
  3. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.

Affected products and versions

VendorProductAffected versionsFixed in
MediaTekMT6580, MT6739, MT6761, MT6765, MT6768, MT6779, MT6781, MT6785, MT6789, MT6833, MT6835, MT6853, MT6855, MT6873, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6896, MT6897, MT6983, MT6985, MT6989, MT8321, MT8666, MT8667, MT8673, MT8678, MT8765, MT8766, MT8766R, MT8768, MT8771, MT8781, MT8786, MT8788, MT8788E, MT8791T, MT8797, MT8798, MT8863TAndroid 13.0, 14.0, 15.0Not stated
MediaTekmt6580all versionsNot stated
MediaTekmt6739all versionsNot stated
MediaTekmt6761all versionsNot stated
MediaTekmt6765all versionsNot stated
MediaTekmt6768all versionsNot stated
MediaTekmt6779all versionsNot stated
MediaTekmt6781all versionsNot stated
MediaTekmt6785all versionsNot stated
MediaTekmt6789all versionsNot stated
MediaTekmt6833all versionsNot stated
MediaTekmt6835all versionsNot stated
MediaTekmt6853all versionsNot stated
MediaTekmt6855all versionsNot stated
MediaTekmt6873all versionsNot stated
MediaTekmt6877all versionsNot stated
MediaTekmt6878all versionsNot stated
MediaTekmt6879all versionsNot stated
MediaTekmt6883all versionsNot stated
MediaTekmt6885all versionsNot stated
MediaTekmt6886all versionsNot stated
MediaTekmt6889all versionsNot stated
MediaTekmt6893all versionsNot stated
MediaTekmt6895all versionsNot stated
MediaTekmt6896all versionsNot stated

Version data comes from the organisation that assigned the CVE; 23 further products are omitted here. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
NoneNo account or login is needed.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
NoneNo data is disclosed.
Integrity
NoneNothing can be modified.
Availability
HighThe component can be taken down completely.

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

Official description

In Telephony, there is a possible out of bounds read due to a missing bounds check. This could lead to remote denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS09289881; Issue ID: MSV-2024.

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

The underlying weakness: Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

How developers prevent this class of flaw

  • Use a language that provides appropriate memory abstractions.

More Out-of-bounds Read vulnerabilities (CWE-125)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: partial).
  3. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in MT6580, MT6739, MT6761, MT6765, MT6768, MT6779, MT6781, MT6785, MT6789, MT6833, MT6835, MT6853, MT6855, MT6873, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6896, MT6897, MT6983, MT6985, MT6989, MT8321, MT8666, MT8667, MT8673, MT8678, MT8765, MT8766, MT8766R, MT8768, MT8771, MT8781, MT8786, MT8788, MT8788E, MT8791T, MT8797, MT8798, MT8863T

All MT6580, MT6739, MT6761, MT6765, MT6768, MT6779, MT6781, MT6785, MT6789, MT6833, MT6835, MT6853, MT6855, MT6873, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6896, MT6897, MT6983, MT6985, MT6989, MT8321, MT8666, MT8667, MT8673, MT8678, MT8765, MT8766, MT8766R, MT8768, MT8771, MT8781, MT8786, MT8788, MT8788E, MT8791T, MT8797, MT8798, MT8863T vulnerabilities

Recent Out-of-bounds Read vulnerabilities

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