#VU21992 Out-of-bounds read in Tcpdump
Vulnerability identifier: #VU21992
Vulnerability risk: Low
CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-125
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 a boundary error in the print-fr.c:mfr_print() within the FRF.16 parser in tcpdump before 4.9.3. A remote attacker can generate specially crafted data, trigger out-of-bounds read error and perform denial of service attack.
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/tcpdump-4.9/CHANGES
http://github.com/the-tcpdump-group/tcpdump/commit/aa3e54f594385ce7e1e319b0c84999e51192578b
http://lists.debian.org/debian-lts-announce/2019/10/msg00015.html
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.
