Is CVE-2017-5484 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2017-5484 being exploited in the wild.

How severe is CVE-2017-5484?

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

Is there a fix for CVE-2017-5484?

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

How is CVE-2017-5484 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2017-5484?

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-2017-5484: Tcpdump buffer overflow in ATM parser sig_print function

CVE-2017-5484 · 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 in its ATM protocol parser allows an attacker to send specially crafted network packets that can cause the application to crash or potentially execute unauthorized code. This could disrupt network monitoring operations or allow an attacker to gain a foothold on the system running the tool.

Technologies: Tcpdump. Vendors: Tcpdump.

Quick answers

Is CVE-2017-5484 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2017-5484 being exploited in the wild.
How severe is CVE-2017-5484?: 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-2017-5484?: A patch was published on 2017-01-29: Debian security update released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2017-5484 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2017-5484?: 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's ATM (Asynchronous Transfer Mode) signaling parser. The flaw is located in the sig_print() function in print-atm.c and is triggered when processing malformed ATM packets. A remote attacker can exploit this by sending specially crafted packets to a network segment where tcpdump is performing live capture, or by tricking a user into opening a malicious pcap file. Successful exploitation can lead to a denial of service (application crash) or arbitrary code execution with the privileges of the tcpdump process. The issue is resolved in version 4.9.0.

Affected products

tcpdump tcpdump before 4.9.0

Timeline

2017-01-26: disclosed: Initial upstream release and Debian bug report
2017-01-28: advisory: NVD publication date
2017-01-29: patched: Debian security update released

References

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