Quick answers
- Is CVE-2016-8575 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2016-8575 being exploited in the wild.
- How severe is CVE-2016-8575?
- 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-2016-8575?
- A patch was published on 2017-01-26: Fixed in tcpdump version 4.9.0-1 in Debian unstable Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2016-8575 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2016-8575?
- 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 Q.933 parser (specifically in print-fr.c:q933_print()) due to improper bounds checking when processing Frame Relay Q.933 packets. A remote attacker can exploit this by sending specially crafted network traffic to a segment where tcpdump is performing live capture, or by providing a malicious pcap file for offline analysis. Successful exploitation can lead to a denial of service (application crash) or arbitrary code execution with the privileges of the tcpdump process. This issue was addressed in version 4.9.0.
Affected products
- tcpdump tcpdump before 4.9.0
Timeline
- 2016-10-24: disclosed: CVE assigned
- 2017-01-26: patched: Fixed in tcpdump version 4.9.0-1 in Debian unstable
- 2017-01-28: advisory: NVD publication date