#VU8339 Buffer over-read in Tcpdump - CVE-2017-12894

Vulnerability identifier: #VU8339

Vulnerability risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-12894

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 obtain potentially sensitive information.

The weakness exists due to buffer over-read in the lookup_bytestring component. A remote attacker can send a specially crafted request and retrieve arbitrary files on the system.

Mitigation
Update to version 4.9.2.

Vulnerable software versions

Tcpdump: 4.9.0

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External links
https://www.tcpdump.org/tcpdump-changes.txt

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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.