#VU95773 Integer underflow in Linux kernel - CVE-2004-0816

Vulnerability identifier: #VU95773

Vulnerability risk: Low

CVSSv4.0: 7.7 [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/E:P/U:Clear]

CVE-ID: CVE-2004-0816

CWE-ID: CWE-191

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

Integer underflow in the firewall logging rules for iptables in Linux before 2.6.8 allows remote attackers to cause a denial of service (application crash) via a malformed IP packet.

Mitigation
Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

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External links
https://www.novell.com/linux/security/advisories/2004_37_kernel.html
https://www.securityfocus.com/bid/11488
https://secunia.com/advisories/11202/
https://www.mandriva.com/security/advisories?name=MDKSA-2005:022
https://exchange.xforce.ibmcloud.com/vulnerabilities/17800

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.