Vulnerability Name:

CVE-2021-3571 (CCN-204931)

Assigned:2021-07-05
Published:2021-07-05
Updated:2022-10-07
Summary: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.
CVSS v3 Severity:7.1 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H)
6.2 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): None
Availibility (A): High
7.1 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H)
6.2 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): None
Availibility (A): High
7.1 High (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H)
6.2 Medium (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:5.5 Medium (CVSS v2 Vector: AV:N/AC:L/Au:S/C:P/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): Partial
7.5 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:P/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-125
CWE-119
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2021-3571

Source: MISC
Type: Issue Tracking, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1966241

Source: XF
Type: UNKNOWN
linuxptp-cve20213571-info-disc(204931)

Source: CCN
Type: linuxptp GIT Repository
linuxptp

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-a5b584004c

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-1b42c2f458

Source: CCN
Type: oss-sec Mailing List, Mon, 5 Jul 2021 15:30:14 -0700
linuxptp: Fixes published for CVE-2021-3570 and CVE-2021-3571

Vulnerable Configuration:Configuration 1:
  • cpe:/a:linuxptp_project:linuxptp:*:*:*:*:*:*:*:* (Version >= 3.0 and < 3.1.1)
  • OR cpe:/a:linuxptp_project:linuxptp:*:*:*:*:*:*:*:* (Version < 2.0.1)

    • Configuration 2:
  • cpe:/o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*

    • Configuration 3:
  • cpe:/o:fedoraproject:fedora:33:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:34:*:*:*:*:*:*:*

    • Configuration RedHat 1:
  • cpe:/a:redhat:enterprise_linux:8:*:*:*:*:*:*:*

    • Configuration RedHat 2:
  • cpe:/a:redhat:enterprise_linux:8::appstream:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.redhat.rhsa:def:20214321
    P
    		RHSA-2021:4321: linuxptp security, bug fix, and enhancement update (Moderate)
    2021-11-09
    BACK
    linuxptp_project linuxptp *
    linuxptp_project linuxptp *
    redhat enterprise linux 8.0
    fedoraproject fedora 33
    fedoraproject fedora 34