Input validation error in VxWorks - CVE-2019-12258
Published: July 31, 2019
Vulnerability identifier: #VU19584
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-12258
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation when processing options in TCP packets. A remote attacker can a specially crafted TCP packet with the source and destination TCP-port and IP-addresses of an existing session can reset the TCP session, leading to a DoS attack.
Affected software
VxWorks
SIPROTEC 4 7SJ66
PowerConnect Series
SIPROTEC 4 7SJ66
PowerConnect Series
How to mitigate CVE-2019-12258
Install updates from vendor's website.
The vulnerability is fixed in:
VxWorks 6.9: update to version 6.9.4.12
VxWorks 7: update to versions 2.1.0.0 or 1.4.3.1.
VxWorks 6.9: update to version 6.9.4.12
VxWorks 7: update to versions 2.1.0.0 or 1.4.3.1.
SIPROTEC 4 7SJ66 - update to 4.41
PowerConnect Series - update to 5.1.16.1
PowerConnect Series - update to 5.1.16.1