CVE-2021-3571: fedoraproject fedora

Vulnerability summary

CVE-2021-3571 is a high (CVSS 7.1) vulnerability in fedoraproject fedora. EPSS estimates a 1.90% chance of exploitation in the next 30 days, higher than 79.3% of scored vulnerabilities.

Timeline

1. 09-07-2021
   PublishedVulnerability first disclosed.
2. 03-08-2024
   Last modifiedVulnerability information updated.

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.

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferThe product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
• CWE-125Out-of-bounds ReadThe product reads data past the end, or before the beginning, of the intended buffer.