CVE-2021-3571
High
Description
A flaw was found in the ptp4l program of the linuxptp package. When ptp4l is operating on a little-endian architecture as a PTP transparent clock, a remote attacker could send a crafted one-step sync message to cause an information leak or crash. The highest threat from this vulnerability is to data confidentiality and system availability. This flaw affects linuxptp versions before 3.1.1 and before 2.0.1.
SeverityHigh
CVSS7.1
Exploit probability—
Product
Linuxptp
PublishedJul 9, 2021
First seenJul 9, 2021
Weakness typeCWE-119Memory buffer bounds error
How to fix
Update
- linuxptp_project linuxptp2.0.1, 3.1.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linuxptp_project linuxptp | v < 2.0.1, 3.0 ≤ v < 3.1.1 | 2.0.1, 3.1.1 |
| redhat enterprise_linux | 8.0 | — |
| fedoraproject fedora | 33, 34 | — |
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