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CVE-2018-18409

A stack-based buffer over-read exists in setbit() at iptree.h of TCPFLOW 1.5.0, due to received...

5.5 MediumFix available

A stack-based buffer over-read exists in setbit() at iptree.h of TCPFLOW 1.5.0, due to received incorrect values causing incorrect computation, leading to denial of service during an address_histogram call or a get_histogram call.

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
None
Integrity
None
Availability
High

Exploit likelihood

1.30%Unchanged since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 5.5

A stack-based buffer over-read exists in setbit() at iptree.h of TCPFLOW 1.5.0, due to received incorrect values causing incorrect computation, leading to denial of service during an address_histogram call or a get_histogram call.

Record
CVE-2018-18409
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness
CWE-125
Updated
2026-11-02
CVE List No score

A stack-based buffer over-read exists in setbit() at iptree.h of TCPFLOW 1.5.0, due to received incorrect values causing incorrect computation, leading to denial of service during an address_histogram call or a get_histogram call.

Record
CVE-2018-18409
Updated
2026-11-02
EUVDEUVD-2018-10138 No score

A stack-based buffer over-read exists in setbit() at iptree.h of TCPFLOW 1.5.0, due to received incorrect values causing incorrect computation, leading to denial of service during an address_histogram call or a get_histogram call.

Record
EUVD-2018-10138
Updated
2026-11-03
GitHub AdvisoriesGHSA-5xhp-rfv2-8345 5.5

A stack-based buffer over-read exists in setbit() at iptree.h of TCPFLOW 1.5.0, due to received...

A stack-based buffer over-read exists in setbit() at iptree.h of TCPFLOW 1.5.0, due to received incorrect values causing incorrect computation, leading to denial of service during an address_histogram call or a get_histogram call.

Record
GHSA-5xhp-rfv2-8345
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-125
Updated
2026-11-02
OSVALPINE-CVE-2018-18409 5.5

A stack-based buffer over-read exists in setbit() at iptree.h of TCPFLOW 1.5.0, due to received incorrect values causing incorrect computation, leading to denial of service during an address_histogram call or a get_histogram call.

Record
ALPINE-CVE-2018-18409
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSV 5.5

A stack-based buffer over-read exists in setbit() at iptree.h of TCPFLOW 1.5.0, due to received incorrect values causing incorrect computation, leading to denial of service during an address_histogram call or a get_histogram call.

Record
CVE-2018-18409
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
Show 4 moreShow less
OSVDEBIAN-CVE-2018-18409 5.5

A stack-based buffer over-read exists in setbit() at iptree.h of TCPFLOW 1.5.0, due to received incorrect values causing incorrect computation, leading to denial of service during an address_histogram call or a get_histogram call.

Record
DEBIAN-CVE-2018-18409
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2018-18409 5.5

A stack-based buffer over-read exists in setbit() at iptree.h of TCPFLOW 1.5.0, due to received incorrect values causing incorrect computation, leading to denial of service during an address_histogram call or a get_histogram call.

Record
UBUNTU-CVE-2018-18409
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVMGASA-2019-0264 No score

Updated tcpflow packages fix security vulnerability

Updated tcpflow package fixes security vulnerability:

A stack-based buffer over-read exists in setbit() at iptree.h of TCPFLOW 1.5.0, due to received incorrect values causing incorrect computation, leading to denial of service during an address_histogram call or a get_histogram call (CVE-2018-18409).

Record
MGASA-2019-0264
Updated
2026-11-02
OSVUSN-3955-1 No score

tcpflow vulnerabilities

It was discovered that tcpflow incorrectly handled certain malformed network packets. A remote attacker could send these packets to a target system, causing tcpflow to crash or possibly disclose sensitive information.

Record
USN-3955-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
tcpflow
Alpine:v3.10
 before 1.5.0-r1
1.5.0-r1
tcpflow
Alpine:v3.11
 before 1.5.0-r1
1.5.0-r1
tcpflow
Alpine:v3.12
 before 1.5.0-r1
1.5.0-r1
tcpflow
Alpine:v3.13
 before 1.5.0-r1
1.5.0-r1
tcpflow
Alpine:v3.14
 before 1.5.0-r1
1.5.0-r1
tcpflow
Alpine:v3.15
 before 1.5.0-r1
1.5.0-r1
tcpflow
Alpine:v3.16
 before 1.5.0-r1
1.5.0-r1
tcpflow
Alpine:v3.17
 before 1.5.0-r1
1.5.0-r1
tcpflow
Alpine:v3.18
 before 1.5.0-r1
1.5.0-r1
tcpflow
Alpine:v3.19
 before 1.5.0-r1
1.5.0-r1
Show 15 moreShow less
Affected packages
PackageAffectedFixed
tcpflow
Alpine:v3.20
 before 1.5.0-r1
1.5.0-r1
tcpflow
Alpine:v3.21
 before 1.5.0-r1
1.5.0-r1
tcpflow
Alpine:v3.22
 before 1.5.0-r1
1.5.0-r1
tcpflow
Alpine:v3.23
 before 1.5.0-r1
1.5.0-r1
tcpflow
Alpine:v3.24
 before 1.5.0-r1
1.5.0-r1
tcpflow
Alpine:v3.7
 before 1.5.0-r1
1.5.0-r1
tcpflow
Alpine:v3.8
 before 1.5.0-r1
1.5.0-r1
tcpflow
Alpine:v3.9
 before 1.5.0-r1
1.5.0-r1
tcpflow
Debian:12
 before 1.5.2+repack1-1
1.5.2+repack1-1
tcpflow
Debian:13
 before 1.5.2+repack1-1
1.5.2+repack1-1
tcpflow
Debian:14
 before 1.5.2+repack1-1
1.5.2+repack1-1
tcpflow
Mageia:6
 before 1.5.2-1.mga6
1.5.2-1.mga6
tcpflow
Ubuntu:Pro:14.04:LTS
 before 1.4.4+repack1-2ubuntu0.1~esm1, plus listed versions
1.3.0+dfsg-21.4.3+repack1-11.4.4+repack1-11.4.4+repack1-2
1.4.4+repack1-2ubuntu0.1~esm1
tcpflow
Ubuntu:16.04:LTS
 before 1.4.5+repack1-1ubuntu0.1, plus listed versions
1.4.4+repack1-31.4.5+repack1-1
1.4.5+repack1-1ubuntu0.1
tcpflow
Ubuntu:18.04:LTS
 before 1.4.5+repack1-4ubuntu0.18.04.1, plus listed versions
1.4.5+repack1-41.4.5+repack1-4build11.4.5+repack1-4build2
1.4.5+repack1-4ubuntu0.18.04.1

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-18409 is a medium vulnerability (CVSS 5.5) in Digitalcorpora Tcpflow, published October 17, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.30%, the 70th percentile. Fixed in tcpflow 1.5.0-r1.

References

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