| Name | CVE-2021-3571 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 990749 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| linuxptp (PTS) | stretch (security), stretch (lts), stretch | 1.8-1+deb9u1 | fixed |
| buster (security), buster, buster (lts) | 1.9.2-1+deb10u1 | fixed |
| bullseye | 3.1-2.1 | fixed |
| bookworm | 3.1.1-4 | fixed |
| sid, trixie | 4.2-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| linuxptp | source | stretch | (not affected) | | | |
| linuxptp | source | buster | (not affected) | | | |
| linuxptp | source | (unstable) | 3.1-2.1 | | | 990749 |
Notes
[buster] - linuxptp <not-affected> (Vulnerable code introduced later, transparent clock implementation in v2.0)
[stretch] - linuxptp <not-affected> (Vulnerable code introduced later, transparent clock implementation in v2.0)
https://github.com/richardcochran/linuxptp/commit/d61d77e163dbee247819f3d88593ba111577af15 (master)
https://github.com/richardcochran/linuxptp/commit/0b3ab45de6a96ca181a5cf62c3c2b97167e2ed20 (v3.1.1)
https://www.openwall.com/lists/oss-security/2021/07/06/1