#VU95590 Information exposure in Linux kernel - CVE-2006-1342

Vulnerability identifier: #VU95590

Vulnerability risk: Low

CVSSv4.0: 1.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2006-1342

CWE-ID: CWE-200

Exploitation vector: Local

Exploit availability: Yes

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

Vendor: Linux Foundation

Description

The vulnerability allows a local user to gain access to sensitive information.

net/ipv4/af_inet.c in Linux kernel 2.4 does not clear sockaddr_in.sin_zero before returning IPv4 socket names from the (1) getsockname, (2) getpeername, and (3) accept functions, which allows local users to obtain portions of potentially sensitive memory.

Mitigation
Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

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External links
https://marc.info/?l=linux-netdev&m=114148078223594&w=2
https://secunia.com/advisories/19357
https://secunia.com/advisories/20398
https://secunia.com/advisories/21035
https://secunia.com/advisories/22875
https://www.kernel.org/git/?p=linux/kernel/git/marcelo/linux-2.4.git;a=commit;h=09d3b3dcfa80c9094f1748c1be064b9326c9ef2b
https://www.novell.com/linux/security/advisories/2006-05-31.html
https://www.redhat.com/support/errata/RHSA-2006-0579.html
https://www.redhat.com/support/errata/RHSA-2006-0580.html
https://www.securityfocus.com/archive/1/451404/100/0/threaded
https://www.securityfocus.com/archive/1/451417/100/200/threaded
https://www.securityfocus.com/archive/1/451419/100/200/threaded
https://www.securityfocus.com/archive/1/451426/100/200/threaded
https://www.securityfocus.com/bid/17203
https://www.vmware.com/download/esx/esx-202-200610-patch.html
https://www.vmware.com/download/esx/esx-213-200610-patch.html
https://www.vmware.com/download/esx/esx-254-200610-patch.html
https://www.vupen.com/english/advisories/2006/4502

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

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.