Stack-based buffer overflow in NSD - CVE-2019-13207
Published: September 10, 2019
Vulnerability identifier: #VU20963
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber
CVE-ID: CVE-2019-13207
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: NLnet Labs
Affected software:
NSD
NSD
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code or cause a denial of service (DoS) condition on a targeted system.
The vulnerability exists due to a boundary error in the "dname_concatenate()" function in "dname.c" file. A remote unauthenticated attacker can send a specially crafted request, trigger stack-based buffer overflow and crash the target application or execute arbitrary code on the target system.
How to mitigate CVE-2019-13207
Install update from vendor's website.