#VU95775 Information exposure in Linux kernel - CVE-2003-0001

Vulnerability identifier: #VU95775

Vulnerability risk: Low

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2003-0001

CWE-ID: CWE-200

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 gain access to sensitive information.

Multiple ethernet Network Interface Card (NIC) device drivers do not pad frames with null bytes, which allows remote attackers to obtain information from previous packets or kernel memory by using malformed packets, as demonstrated by Etherleak.

Mitigation
Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

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External links
https://archives.neohapsis.com/archives/vulnwatch/2003-q1/0016.html
https://marc.info/?l=bugtraq&m=104222046632243&w=2
https://secunia.com/advisories/7996
https://www.atstake.com/research/advisories/2003/a010603-1.txt
https://www.atstake.com/research/advisories/2003/atstake_etherleak_report.pdf
https://www.kb.cert.org/vuls/id/412115
https://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html
https://www.osvdb.org/9962
https://www.redhat.com/support/errata/RHSA-2003-025.html
https://www.redhat.com/support/errata/RHSA-2003-088.html
https://www.securityfocus.com/archive/1/305335/30/26420/threaded
https://www.securityfocus.com/archive/1/307564/30/26270/threaded
https://www.securitytracker.com/id/1031583
https://www.securitytracker.com/id/1040185
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A2665

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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.