#VU99976 Resource exhaustion in Linux kernel - CVE-2003-0244
Vulnerability identifier: #VU99976
Vulnerability risk: Low
CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID:
CWE-ID:
CWE-400
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
The route cache implementation in Linux 2.4, and the Netfilter IP conntrack module, allows remote attackers to cause a denial of service (CPU consumption) via packets with forged source addresses that cause a large number of hash table collisions.
Mitigation
Install update from vendor's repository.
Vulnerable software versions
Linux kernel: All versions
External links
https://archives.neohapsis.com/archives/vulnwatch/2003-q2/0073.html
https://marc.info/?l=bugtraq&m=105301461726555&w=2
https://marc.info/?l=bugtraq&m=105595901923063&w=2
https://marc.info/?l=linux-kernel&m=104956079213417
https://www.debian.org/security/2003/dsa-311
https://www.debian.org/security/2003/dsa-312
https://www.debian.org/security/2003/dsa-332
https://www.debian.org/security/2003/dsa-336
https://www.debian.org/security/2004/dsa-442
https://www.enyo.de/fw/security/notes/linux-dst-cache-dos.html
https://www.mandriva.com/security/advisories?name=MDKSA-2003:066
https://www.mandriva.com/security/advisories?name=MDKSA-2003:074
https://www.redhat.com/support/errata/RHSA-2003-145.html
https://www.redhat.com/support/errata/RHSA-2003-147.html
https://www.redhat.com/support/errata/RHSA-2003-172.html
https://www.secunia.com/advisories/8786/
https://www.securityfocus.com/bid/7601
https://exchange.xforce.ibmcloud.com/vulnerabilities/15382
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A261
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.
