CyberSecBulletin
CVE-2024-45555NVD status: Analyzed

Snapdragon: Integer Overflow or Wraparound

Published Updated By the CyberSecBulletin desk

CVE-2024-45555 is a high-severity integer overflow or wraparound vulnerability in Snapdragon from Qualcomm, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. Affected Snapdragon versions: MSM8996AU; QAM8255P; QAM8295P, and others listed below. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.14% 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 Snapdragon you run against the affected versions below, and install the vendor's latest release.
  2. Read the advisory on docs.qualcomm.com for workarounds and exact fixed builds.

Affected products and versions

VendorProductAffected versionsFixed in
QualcommSnapdragonMSM8996AU; QAM8255P; QAM8295P; QAM8620P; QAM8650P; QAM8775P; QAMSRV1H; QAMSRV1M; and 32 more rangesNot stated
QualcommMsm8996au FirmwareNot specified in the recordNot stated
QualcommQam8255p FirmwareNot specified in the recordNot stated
QualcommQam8295p FirmwareNot specified in the recordNot stated
QualcommQam8620p FirmwareNot specified in the recordNot stated
QualcommQam8650p FirmwareNot specified in the recordNot stated
QualcommQam8775p FirmwareNot specified in the recordNot stated
QualcommQamsrv1h FirmwareNot specified in the recordNot stated
QualcommQamsrv1m FirmwareNot specified in the recordNot stated
QualcommQca6564a FirmwareNot specified in the recordNot stated
QualcommQca6564au FirmwareNot specified in the recordNot stated
QualcommQca6574a FirmwareNot specified in the recordNot stated
QualcommQca6574au FirmwareNot specified in the recordNot stated
QualcommQca6584au FirmwareNot specified in the recordNot stated
QualcommQca6595 FirmwareNot specified in the recordNot stated
QualcommQca6595au FirmwareNot specified in the recordNot stated
QualcommQca6688aq FirmwareNot specified in the recordNot stated
QualcommQca6696 FirmwareNot specified in the recordNot stated
QualcommQca6698aq FirmwareNot specified in the recordNot stated
QualcommSa6145p FirmwareNot specified in the recordNot stated
QualcommSa6150p FirmwareNot specified in the recordNot stated
QualcommSa6155 FirmwareNot specified in the recordNot stated
QualcommSa6155p FirmwareNot specified in the recordNot stated
QualcommSa7255p FirmwareNot specified in the recordNot stated
QualcommSa7775p FirmwareNot specified in the recordNot stated

Version data comes from the organisation that assigned the CVE; 17 further products are omitted here. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
LocalThe attacker needs local access or must trick a user into running something.
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
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

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

Scoring systemScoreSeverityScored by
CVSS 3.18.4HighCNA (qualcomm.com)
CVSS 3.17.8HighNVD

Official description

Memory corruption can occur if an already verified IFS2 image is overwritten, bypassing boot verification. This allows unauthorized programs to be injected into security-sensitive images, enabling the booting of a tampered IFS2 system image.

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

The underlying weakness: Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

How developers prevent this class of flaw

  • Ensure that all protocols are strictly defined, such that all out-of-bounds behavior can be identified simply, and require strict conformance to the protocol.
  • Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. If possible, choose a language or compiler that performs automatic bounds checking.
  • Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. Use libraries or frameworks that make it easier to handle numbers without unexpected consequences. Examples include safe integer handling packages such as SafeInt (C++) or IntegerLib (C or C++).

More Integer Overflow or Wraparound vulnerabilities (CWE-190)

Timeline

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

References

Other vulnerabilities in Snapdragon

All Snapdragon vulnerabilities

Recent Integer Overflow or Wraparound vulnerabilities

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