#VU21997 Out-of-bounds read


Published: 2019-10-21

Vulnerability identifier: #VU21997

Vulnerability risk: Low

CVSSv3.1:

CVE-ID: CVE-2018-14881

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-bgp.c:bgp_capabilities_print() (BGP_CAPCODE_RESTART) within the BGP 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


CPE

External links
http://github.com/the-tcpdump-group/tcpdump/blob/tcpdump-4.9/CHANGES
http://github.com/the-tcpdump-group/tcpdump/commit/86326e880d31b328a151d45348c35220baa9a1ff
http://lists.debian.org/debian-lts-announce/2019/10/msg00015.html


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?


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