Buffer overflow in ntp - CVE-2015-7853
Published: June 10, 2021
Vulnerability identifier: #VU54023
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2015-7853
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in the "datalen" parameter in the "refclock" driver. A remote attacker can trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
ntp
SIMATIC NET CP 443-1 OPC UA
SIMATIC NET CP 443-1 OPC UA
How to mitigate CVE-2015-7853
Install updates from vendor's website.
ntp - addressed in versions 4.2.8p4, 4.3.77
External References
- https://bugzilla.redhat.com/show_bug.cgi?id=1274262
- http://www.securityfocus.com/bid/77273
- http://support.ntp.org/bin/view/Main/NtpBug2920
- https://security.gentoo.org/glsa/201607-15
- http://www.securitytracker.com/id/1033951
- https://security.netapp.com/advisory/ntap-20171004-0001/
- https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf