Multiple vulnerabilities in linuxptp

Published: 2021-07-06

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-3570 CVE-2021-3571
CWE-ID	CWE-119 CWE-401
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	linuxptp Universal components / Libraries / Libraries used by multiple products
Vendor	Richard Cochran

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Buffer overflow

EUVDB-ID: #VU54573

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-3570

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when forwarding PTP messages between ports in ptp41 program. A remote attacker can send specially crafted messages to the application, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

linuxptp: 1.0 - 3.1

External links

http://seclists.org/oss-sec/2021/q3/4
http://bugzilla.redhat.com/show_bug.cgi?id=1966240

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Memory leak

EUVDB-ID: #VU54574

Risk: Medium

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-3571

CWE-ID: CWE-401 - Missing release of memory after effective lifetime