#VU6729 Buffer overflow in Tcpdump - CVE-2016-7922

Vulnerability identifier: #VU6729

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2016-7922

CWE-ID: CWE-120

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Tcpdump
Server applications / DLP, anti-spam, sniffers

Vendor: Tcpdump.org

Description
The vulnerability allow a remote attacker to cause DoS condition or potentially execute arbitrary code on the target system.

The weakness exists due to buffer overflow in the print-ah.c:ah_print() in the AH parser. A remote attacker can use a specially crafted AH protocol to trigger memory corruption and cause the application to crash or possibly execute arbitrary code.

Successful exploitation of the vulnerability may result system compromise.

Mitigation
Update to version 4.9.0.

Vulnerable software versions

Tcpdump: 3.6.2 - 4.8.1

---

External links
https://isc.sans.edu/forums/diary/Multiple+Vulnerabilities+in+tcpdump/22017/

---

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.