Use After Free Affecting tcpreplay package, versions <3.4.4-2+deb8u1ubuntu0.1~esm2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1604-TCPREPLAY-1190273
- published22 Mar 2026
- disclosed17 Oct 2018
Introduced: 17 Oct 2018
CVE-2018-18408 (opens in a new tab)How to fix?
Upgrade Ubuntu:16.04 tcpreplay to version 3.4.4-2+deb8u1ubuntu0.1~esm2 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream tcpreplay package and not the tcpreplay package as distributed by Ubuntu.
See How to fix? for Ubuntu:16.04 relevant fixed versions and status.
A use-after-free was discovered in the tcpbridge binary of Tcpreplay 4.3.0 beta1. The issue gets triggered in the function post_args() at tcpbridge.c, causing a denial of service or possibly unspecified other impact.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-18408
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4V3SADKXUSHWTVAPU3WLXBDEQUHRA6ZO/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MLPY6W7Z7G6PF2JN4LXXHCACYLD4RBG6/
- https://github.com/appneta/tcpreplay/issues/489
- https://github.com/SegfaultMasters/covering360/blob/master/tcpreplay/README.md#use-after-free-in-post_args
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4V3SADKXUSHWTVAPU3WLXBDEQUHRA6ZO/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MLPY6W7Z7G6PF2JN4LXXHCACYLD4RBG6/