Vulnerability identifier: #VU19365
Vulnerability risk: Low
CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-126
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Tcpdump
Server applications /
DLP, anti-spam, sniffers
Vendor: Tcpdump.org
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to buffer over-read issue in the "print_prefix" function in "print-hncp.c" file via the "ND_PRINT((ndo, "%s", buf));" commponent. A remote attacker can trick a victim to open a specially crafted pcap file, trigger a buffer over-read condition and cause the affected application to crash.Mitigation
Install update from vendor's website/
Vulnerable software versions
Tcpdump: 4.9.0 - 4.9.2
External links
http://github.com/the-tcpdump-group/tcpdump/blob/master/print-hncp.c
http://github.com/the-tcpdump-group/tcpdump/blob/tcpdump-4.9.2/print-hncp.c
http://github.com/the-tcpdump-group/tcpdump/commits/master/print-hncp.c
http://github.com/the-tcpdump-group/tcpdump/blob/tcpdump-4.9/CHANGES
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.