Quick answers
- Is CVE-2017-5483 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2017-5483 being exploited in the wild.
- How severe is CVE-2017-5483?
- 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-2017-5483?
- 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-2017-5483 attacked?
- It is attacked over the network, in an operating system.
- Am I affected by CVE-2017-5483?
- 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 the SNMP parser of tcpdump versions prior to 4.9.0. The flaw is located in the 'asn1_parse' function within 'print-snmp.c'. A remote attacker can exploit this by sending specially crafted SNMP 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 potentially arbitrary code execution with the privileges of the tcpdump process. The issue was addressed in the upstream release of version 4.9.0.
Affected products
- tcpdump tcpdump < 4.9.0
Timeline
- 2017-01-26: disclosed: Initial upstream security release announcement
- 2017-01-28: advisory: NVD publication date
- 2017-01-29: patched: Debian security update released
- 2017-02-21: patched: Gentoo security update released
- 2017-08-01: patched: Red Hat security update released