Remote DoS in tcpdump



Published: 2017-07-26
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-11108
CWE-ID CWE-125
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
Subscribe 		Tcpdump
Server applications / DLP, anti-spam, sniffers

Vendor Tcpdump.org

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Out-of-bounds read

EUVDB-ID: #VU7591

Risk: Low

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2017-11108

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists to a boundary error in the EXTRACT_16BITS() function, called from the stp_print function for the Spanning Tree Protocol in tcpdump 4.9.0. A remote attacker can send a specially crafted network packet, trigger heap-based buffer over-read and crash the affected application.

Successful exploitation of the vulnerability may allow an attacker to perform a denial of service (DoS) attack.

Mitigation

Update to version 4.9.1.

Vulnerable software versions

Tcpdump: 4.9.0

External links

http://bugzilla.redhat.com/show_bug.cgi?id=1468504
http://lists.gnu.org/archive/html/guix-commits/2017-07/msg01220.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. However, proof of concept for this vulnerability is available.



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