Quick answers
- Is CVE-2017-5341 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2017-5341 being exploited in the wild.
- How severe is CVE-2017-5341?
- Critical severity, with a CVSS score of 9.8, published 28 January 2017.
- Which products and versions are affected?
- tcpdump tcpdump < 4.9.0.
- Is there a fix for CVE-2017-5341?
- 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-2017-5341 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2017-5341?
- 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 Overlay Transport Virtualization (OTV) protocol parser. The flaw is located in the otv_print() function in print-otv.c and is triggered when processing malformed OTV packets. A remote, unauthenticated attacker can exploit this by sending crafted packets to a network segment where tcpdump is performing live capture or by providing a malicious pcap file for offline analysis. Successful exploitation can result in a denial of service (application crash) or potentially arbitrary code execution. The issue was addressed in version 4.9.0.
Affected products
- tcpdump tcpdump < 4.9.0
Timeline
- 2017-01-26: disclosed: Upstream release 4.9.0 announced fixing 41 vulnerabilities
- 2017-01-27: advisory: NVD publication date
- 2017-01-29: patched: Debian security update released