Is CVE-2017-5342 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2017-5342 being exploited in the wild.

How severe is CVE-2017-5342?

Critical severity, with a CVSS score of 9.8, published 28 January 2017.

Is there a fix for CVE-2017-5342?

A patch was published on 2017-01-29: Debian security update (DSA-3775-1) released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2017-5342 attacked?

It is attacked over the network, in an operating system.

Am I affected by CVE-2017-5342?

Check whether you run Tcpdump. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2017-5342: tcpdump buffer overflow in multiple protocol parsers

CVE-2017-5342 · Severity: critical · CVSS 9.8 · Published 2017-01-28

tcpdump is a widely used command-line tool for monitoring and analyzing network traffic. A vulnerability was discovered that allows an attacker to send specially crafted network packets to a system running tcpdump, potentially causing the tool to crash or allowing the attacker to take control of the system. This could lead to a disruption of network monitoring services or unauthorized access to sensitive data being captured from the network.

Technologies: Tcpdump. Vendors: Tcpdump.

Quick answers

Is CVE-2017-5342 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2017-5342 being exploited in the wild.
How severe is CVE-2017-5342?: Critical severity, with a CVSS score of 9.8, published 28 January 2017.
Which products and versions are affected?: tcpdump tcpdump before 4.9.0.
Is there a fix for CVE-2017-5342?: A patch was published on 2017-01-29: Debian security update (DSA-3775-1) released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2017-5342 attacked?: It is attacked over the network, in an operating system.
Am I affected by CVE-2017-5342?: Check whether you run Tcpdump. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A buffer overflow vulnerability exists in tcpdump versions prior to 4.9.0 within the print-ether.c:ether_print() function. The flaw is triggered by a bug in multiple protocol parsers, including Geneve, GRE, NSH, OTV, VXLAN, and VXLAN GPE. A remote, unauthenticated attacker can exploit this by sending specially crafted packets to a network interface being monitored by tcpdump in live capture mode, or by tricking a user into opening a malicious pcap file. Successful exploitation can result in a denial of service (application crash) or the execution of arbitrary code with the privileges of the tcpdump process. The issue was addressed in the upstream release of tcpdump 4.9.0.

Affected products

tcpdump tcpdump before 4.9.0

Timeline

2017-01-26: disclosed: Debian bug report and upstream release announcement
2017-01-27: advisory: NVD published date
2017-01-29: patched: Debian security update (DSA-3775-1) released

References

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