CVE-2022-39274
What it is
LoRaMac-node is a reference implementation and documentation of a LoRa network node. Versions of LoRaMac-node prior to 4.7.0 are vulnerable to a buffer overflow. Improper size validation of the incoming radio frames can lead to an 65280-byte out-of-bounds write. The function `ProcessRadioRxDone` implicitly expects incoming radio frames to have at least a payload of one byte or more. An empty payload leads to a 1-byte out-of-bounds read of user controlled content when the payload buffer is reused. This allows an attacker to craft a FRAME_TYPE_PROPRIETARY frame with size -1 which results in an 65280-byte out-of-bounds memcopy likely with partially controlled attacker data. Corrupting a large part if the data section is likely to cause a DoS. If the large out-of-bounds write does not immediately crash the attacker may gain control over the execution due to now controlling large parts of the data section. Users are advised to upgrade either by updating their package or by manually applying the patch commit `e851b079`.
At a glance
- Exploitability
- Can be exploited over the network with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 2.0% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 2.0% in the next 30 days (EPSS).
- Severity: 7.5 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 2.0% · EPSS, next 30 days
- Weakness
- CWE-120 · Classic buffer overflow
- Record status
- Modified
Affected
- Semtech loramac-node < 4.7.0
Attack profile CVSS 3.1 · 7.5
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2022-39274.md and follow it. Check whether this project is affected by CVE-2022-39274. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://github.com/Lora-net/LoRaMac-node/commit/e851b079c82ba1bcf3f4d291ab69a571b0bf458a
- https://github.com/Lora-net/LoRaMac-node/releases/tag/v4.7.0
- https://github.com/Lora-net/LoRaMac-node/security/advisories/GHSA-7vv8-73pc-63c2
- https://github.com/Lora-net/LoRaMac-node/commit/e851b079c82ba1bcf3f4d291ab69a571b0bf458a
- https://github.com/Lora-net/LoRaMac-node/releases/tag/v4.7.0
- https://github.com/Lora-net/LoRaMac-node/security/advisories/GHSA-7vv8-73pc-63c2
References
- https://github.com/Lora-net/LoRaMac-node/commit/e851b079c82ba1bcf3f4d291ab69a571b0bf458a
- https://github.com/Lora-net/LoRaMac-node/releases/tag/v4.7.0
- https://github.com/Lora-net/LoRaMac-node/security/advisories/GHSA-7vv8-73pc-63c2
- https://github.com/Lora-net/LoRaMac-node/commit/e851b079c82ba1bcf3f4d291ab69a571b0bf458a
- https://github.com/Lora-net/LoRaMac-node/releases/tag/v4.7.0
- https://github.com/Lora-net/LoRaMac-node/security/advisories/GHSA-7vv8-73pc-63c2