CVE-2012-2663
7.5 · HIGHextensions/libxt_tcp.c in iptables through 1.4.21 does not match TCP SYN+FIN packets in --syn rules, which might allow remote attackers to bypass intended firewall restrictions via crafted packets.
Overview
CVE-2012-2663 is a high-severity vulnerability affecting netfilter iptables. It was published on February 15, 2014 and has a CVSS 2.0 base score of 7.5 (HIGH).
This vulnerability has a CVSS 2.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical description
extensions/libxt_tcp.c in iptables through 1.4.21 does not match TCP SYN+FIN packets in --syn rules, which might allow remote attackers to bypass intended firewall restrictions via crafted packets. NOTE: the CVE-2012-6638 fix makes this issue less relevant.
Remediation
Check the references section for vendor advisories and patches from netfilter. Update iptables to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| netfilter | iptables | 0 | Affected |
How CyberStrike helps
Reason, not just scan
It reasons through your app's logic the way a human pentester would, so it finds flaws signature scanners miss.
Learn moreVerified findings
Every finding is proven exploitable before you see it, which cuts the false positives that bury real risk.
Learn moreAI-driven DAST and SAST
Probe running apps and read source from one engine, so issues are caught before and after they ship.
Learn moreOpen source
Read exactly how it tests and what it reports. CyberStrike is open source and in early access.
View the repo
Frequently asked questions
What is CVE-2012-2663?
CVE-2012-2663 is a high-severity vulnerability affecting netfilter iptables. It was published on February 15, 2014 and has a CVSS 2.0 base score of 7.5 (HIGH).
How severe is CVE-2012-2663?
This vulnerability has a CVSS 2.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2012-2663?
Check the references section for vendor advisories and patches from netfilter. Update iptables to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2012-2663?
CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2012-2663 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.
Related HIGH CVEs from 2012
View all- 10.0CVE-2011-5059
Stack-based buffer overflow in Final Draft 8 before 8.02 allows remote attackers to execute arbitrar
View details - 10.0CVE-2012-0695
Multiple unspecified vulnerabilities in Google Chrome before 17.0.963.27 on the Acer AC700, Samsung
View details - 10.0CVE-2011-4789
Stack-based buffer overflow in magentservice.exe in the server in HP LoadRunner 11.00 before patch 4
View details - 10.0CVE-2012-0697
HP StorageWorks P2000 G3 MSA array systems have a default account, which makes it easier for remote
View details - 10.0CVE-2011-1377
The Web Services Security component in the Web Services Feature Pack before 6.1.0.41 for IBM WebSphe
View details - 10.0CVE-2011-4659
Cisco TelePresence Software before TE 4.1.1 on the Cisco IP Video Phone E20 has a default password f
View details - 10.0CVE-2011-1389
Multiple directory traversal vulnerabilities in the vendor daemon in Rational Common Licensing in Te
View details - 10.0CVE-2011-4134
Heap-based buffer overflow in lmadmin in Flexera FlexNet Publisher 11.10 (aka FlexNet License Server
View details - 10.0CVE-2011-4135
Multiple directory traversal vulnerabilities in lmgrd in Flexera FlexNet Publisher 11.10 (aka FlexNe
View details - 10.0CVE-2012-0918
Unspecified vulnerability in Hitachi COBOL2002 Net Developer, Net Server Suite, and Net Client Suite
View details - 10.0CVE-2011-3478
The host-services component in Symantec pcAnywhere 12.5.x through 12.5.3, and IT Management Suite pc
View details - 10.0CVE-2012-0443
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox 4.x through 9.0, Thund
View details