CVE-2018-20552
Tcpreplay before 4.3.1 has a heap-based buffer over-read in packet2tree in tree.c.
Tcpreplay before 4.3.1 has a heap-based buffer over-read in packet2tree in tree.c.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
7.8
Tcpreplay before 4.3.1 has a heap-based buffer over-read in packet2tree in tree.c.
- Record
CVE-2018-20552- CVSS 3.0
- 7.8 High
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-125
- Updated
- 2026-11-02
CVE List No score
Tcpreplay before 4.3.1 has a heap-based buffer over-read in packet2tree in tree.c.
- Record
CVE-2018-20552- Updated
- 2026-11-02
EUVDEUVD-2018-13106 No score
Tcpreplay before 4.3.1 has a heap-based buffer over-read in packet2tree in tree.c.
- Record
EUVD-2018-13106- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-fcjg-28m6-vxv9
7.8
Tcpreplay before 4.3.1 has a heap-based buffer over-read in packet2tree in tree.c.
Tcpreplay before 4.3.1 has a heap-based buffer over-read in packet2tree in tree.c.
- Record
GHSA-fcjg-28m6-vxv9- CVSS 3.0
- 7.8 High
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-125
- Updated
- 2026-11-02
OSV
7.8
Tcpreplay before 4.3.1 has a heap-based buffer over-read in packet2tree in tree.c.
- Record
CVE-2018-20552- CVSS 3.0
- 7.8 High
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2018-20552
7.8
Tcpreplay before 4.3.1 has a heap-based buffer over-read in packet2tree in tree.c.
- Record
DEBIAN-CVE-2018-20552- CVSS 3.0
- 7.8 High
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2018-20552
7.8
Tcpreplay before 4.3.1 has a heap-based buffer over-read in packet2tree in tree.c.
- Record
UBUNTU-CVE-2018-20552- CVSS 3.0
- 7.8 High
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUSN-5205-1 No score
tcpreplay vulnerabilities
It was discovered that Tcpreplay incorrectly handled certain specially crafted packet capture input when processed by tcpprep. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 ESM. (CVE-2018-13112)
It was discovered that Tcpreplay incorrectly handled certain specially crafted packet capture input. An attacker could possibly use this issue to cause a denial of service or expose sensitive information. This issue only affected Ubuntu 16.04 ESM and Ubuntu 18.04 ESM. (CVE-2018-17580, CVE-2018-17582)
It was discovered that Tcpreplay incorrectly handled certain specially crafted packet capture input. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 16.04 ESM and Ubuntu 18.04 ESM. (CVE-2018-17974, CVE-2018-18407)
It was discovered that a use-after-free existed in Tcpreplay in the tcpbridge binary. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 16.04 ESM and Ubuntu 18.04 ESM. (CVE-2018-18408)
It was discovered that Tcpreplay incorrectly handled certain specially crafted packet capture input. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 16.04 ESM, Ubuntu 18.04 ESM and Ubuntu 20.04 ESM. (CVE-2018-20552, CVE-2018-20553)
It was discovered that a heap-based buffer over-read that existed in Tcpreplay caused an application crash when tcprewrite or tcpreplay-edit received specially crafted packet capture input. An attacker could possibly use this to cause a denial of service or to expose sensitive information. This issue only affected Ubuntu 18.04 ESM and Ubuntu 20.04 ESM. (CVE-2020-12740)
It was discovered that Tcpreplay incorrectly handled certain specially crafted packet capture input when processed by tcpprep. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 ESM and Ubuntu 20.04 ESM. (CVE-2020-24265, CVE-2020-24266)
It was discovered that Tcpreplay incorrectly handled certain specially crafted packet capture input when processed by tcprewrite. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 22.04 ESM. (CVE-2022-27416)
It was discovered that Tcpreplay did not properly manage memory under certain circumstances. If a user were tricked into opening a specially crafted packet capture file, a remote attacker could possibly use this issue to cause Tcpreplay crash, resulting in a denial of service, or possibly read sensitive data. This issue only affected Ubuntu 18.04 ESM, Ubuntu 20.04 ESM and Ubuntu 22.04 ESM. (CVE-2022-28487)
- Record
USN-5205-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
tcpreplayDebian:12 |
before 4.3.1-1 | 4.3.1-1 |
tcpreplayDebian:13 |
before 4.3.1-1 | 4.3.1-1 |
tcpreplayDebian:14 |
before 4.3.1-1 | 4.3.1-1 |
tcpreplayUbuntu:Pro:16.04:LTS |
before 3.4.4-2+deb8u1ubuntu0.1~esm2, plus listed versions 3.4.4-23.4.4-2+deb8u1build0.16.04.13.4.4-2+deb8u1ubuntu0.1~esm1 |
3.4.4-2+deb8u1ubuntu0.1~esm2 |
tcpreplayUbuntu:Pro:18.04:LTS |
before 4.2.6-1ubuntu0.1~esm2, plus listed versions 4.2.6-14.2.6-1ubuntu0.1~esm1 |
4.2.6-1ubuntu0.1~esm2 |
tcpreplayUbuntu:Pro:20.04:LTS |
before 4.3.2-1ubuntu0.1~esm1, plus listed versions 4.3.2-1build1 |
4.3.2-1ubuntu0.1~esm1 |
tcpreplayUbuntu:Pro:18.04:LTS |
before 4.2.6-1ubuntu0.1~esm4, plus listed versions 4.2.6-14.2.6-1ubuntu0.1~esm14.2.6-1ubuntu0.1~esm24.2.6-1ubuntu0.1~esm3 |
4.2.6-1ubuntu0.1~esm4 |
tcpreplayUbuntu:Pro:20.04:LTS |
before 4.3.2-1ubuntu0.1~esm2, plus listed versions 4.3.2-1build14.3.2-1ubuntu0.1~esm1 |
4.3.2-1ubuntu0.1~esm2 |
tcpreplayUbuntu:Pro:22.04:LTS |
before 4.3.4-1ubuntu0.1~esm1, plus listed versions 4.3.3-24.3.4-1 |
4.3.4-1ubuntu0.1~esm1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-20552 is a high vulnerability (CVSS 7.8) in Broadcom Tcpreplay, published December 28, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.25%, the 69th percentile. Fixed in tcpreplay 4.3.1-1.
References
github.com/appneta/tcpreplay/issues/530
github.com/appneta/tcpreplay/pull/532/commits/6b830a1640ca20528032c89a4fdd8291a4d2d8b2
nvd.nist.gov/vuln/detail/CVE-2018-20552
github.com/advisories/GHSA-fcjg-28m6-vxv9
security-tracker.debian.org/tracker/CVE-2018-20552
ubuntu.com/security/CVE-2018-20552
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ubuntu.com/security/notices/USN-5205-1
cve.org/CVERecord?id=CVE-2018-20552
ubuntu.com/security/CVE-2018-13112
ubuntu.com/security/CVE-2018-17580
ubuntu.com/security/CVE-2018-17582
ubuntu.com/security/CVE-2018-17974
ubuntu.com/security/CVE-2018-18407
ubuntu.com/security/CVE-2018-18408
ubuntu.com/security/CVE-2018-20553
ubuntu.com/security/CVE-2020-12740
ubuntu.com/security/CVE-2020-24265
ubuntu.com/security/CVE-2020-24266
ubuntu.com/security/CVE-2022-27416
ubuntu.com/security/CVE-2022-28487