Improper input validation in Linux kernel



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2005-3783
CWE-ID CWE-20
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper input validation

EUVDB-ID: #VU95603

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2005-3783

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The ptrace functionality (ptrace.c) in Linux kernel 2.6 before 2.6.14.2, using CLONE_THREAD, does not use the thread group ID to check whether it is attaching to itself, which allows local users to cause a denial of service (crash).

Mitigation

Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

CPE2.3 External links

https:ftp://patches.sgi.com/support/free/security/advisories/20060402-01-U
https://secunia.com/advisories/17761
https://secunia.com/advisories/17787
https://secunia.com/advisories/17917
https://secunia.com/advisories/17918
https://secunia.com/advisories/18203
https://secunia.com/advisories/19369
https://secunia.com/advisories/19374
https://secunia.com/advisories/19607
https://www.debian.org/security/2006/dsa-1017
https://www.debian.org/security/2006/dsa-1018
https://www.kernel.org/git/?p=linux/kernel/git/gregkh/linux-2.6.14.y.git;a=blobdiff;h=fcfc4568b45f3f190ba320b0d5853836921cb8bc;hp=019e04ec065a55d8f28157d3a1f7ba06cafd347f;hb=082d52c56f642d21b771a13221068d40915a1409;f=kernel/ptrace.c
https://www.kernel.org/git/?p=linux/kernel/git/gregkh/linux-2.6.14.y.git;a=commit;h=082d52c56f642d21b771a13221068d40915a1409
https://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.14.2
https://www.mandriva.com/security/advisories?name=MDKSA-2006:018
https://www.mandriva.com/security/advisories?name=MDKSA-2006:072
https://www.securityfocus.com/advisories/9806
https://www.securityfocus.com/archive/1/419522/100/0/threaded
https://www.securityfocus.com/bid/15642
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=174075
https://usn.ubuntu.com/231-1/


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.



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