CVE-2001-1056

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Summary

CVECVE-2001-1056
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2001-07-30 04:00:00 UTC
Updated2025-04-03 01:03:51 UTC
DescriptionIRC DCC helper in the ip_masq_irc IP masquerading module 2.2 allows remote attackers to bypass intended firewall restrictions by causing the target system to send a "DCC SEND" request to a malicious server which listens on port 6667, which may cause the module to believe that the traffic is a valid request and allow the connection to the port specified in the DCC SEND request.

Risk And Classification

Primary CVSS: v2.0 7.5 from [email protected]

AV:N/AC:L/Au:N/C:P/I:P/A:P

Problem Types: NVD-CWE-Other | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:N/AC:L/Au:N/C:P/I:P/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Neohapsis Archives - Bugtraq - [RAZOR] Linux kernel IP masquerading vulnerability - From [email protected] af854a3a-2127-422b-91ae-364da2661108 archives.neohapsis.com Broken Link
ISS X-Force Database: linux-ipmasqirc-bypass-protection (6923): Linux kernel `ip_masq_irc` module could be used to bypass firewall protection af854a3a-2127-422b-91ae-364da2661108 www.iss.net Broken Link
404 Not Found af854a3a-2127-422b-91ae-364da2661108 www.osvdb.org Broken Link
Neohapsis Archives - Bugtraq - Re: [RAZOR] Linux kernel IP masquerading vulnerability (_actual_ patch) - From [email protected] af854a3a-2127-422b-91ae-364da2661108 archives.neohapsis.com Broken Link
Linux IRC IP Masquerading Module Arbitrary Firewall Rule Insertion Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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