Out-of-bounds read in tcpflow - CVE-2018-18409
Published: June 25, 2020
Vulnerability identifier: #VU29243
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-18409
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to perform a denial of service attack.
The vulnerability exists due to a boundary condition within the setbit() function in iptree.h in tcpflow. A remote attacker can pass specially crafted data to the application, trigger a stack-based buffer over-read and perform a denial of service (DoS) attack.
Affected software
tcpflow
tcpflow (Alpine package)
tcpflow
Fedora
tcpflow (Alpine package)
tcpflow
Fedora
How to mitigate CVE-2018-18409
Install updates from vendor's website.
tcpflow - update to 1.5.2
tcpflow (Alpine package) - update to 1.5.0-r1
tcpflow - addressed in versions 1.5.0-4.fc28, 1.5.0-4.fc29, 1.5.0-4.fc30
tcpflow (Alpine package) - update to 1.5.0-r1
tcpflow - addressed in versions 1.5.0-4.fc28, 1.5.0-4.fc29, 1.5.0-4.fc30
External References
- https://github.com/simsong/tcpflow/issues/195
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/K6MP4YMCJX4ITOBFX427UMOA6E7ZLJDE/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MN5FW6HKPDP7PI2IVNMFSQVIDSCQ5BOR/
- https://usn.ubuntu.com/3955-1/