#VU95241 Resource management errors in Linux kernel - CVE-2005-3784

Vulnerability identifier: #VU95241

Vulnerability 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-2005-3784

CWE-ID: CWE-399

Exploitation vector: Local

Exploit availability: No

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

Vendor: Linux Foundation

Description

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

The auto-reap of child processes in Linux kernel 2.6 before 2.6.15 includes processes with ptrace attached, which leads to a dangling ptrace reference and allows local users to cause a denial of service (crash) and gain root privileges.

Mitigation
Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

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External links
https://secunia.com/advisories/17786
https://secunia.com/advisories/17787
https://secunia.com/advisories/17917
https://secunia.com/advisories/17918
https://secunia.com/advisories/18203
https://secunia.com/advisories/18510
https://secunia.com/advisories/19374
https://www.debian.org/security/2006/dsa-1017
https://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=7ed0175a462c4c30f6df6fac1cccac058f997739
https://www.mandriva.com/security/advisories?name=MDKSA-2006:018
https://www.redhat.com/support/errata/RHSA-2006-0101.html
https://www.securityfocus.com/advisories/9806
https://www.securityfocus.com/archive/1/419522/100/0/threaded
https://www.securityfocus.com/archive/1/427981/100/0/threaded
https://www.securityfocus.com/archive/1/439623/100/100/threaded
https://www.securityfocus.com/bid/15625
https://www.trustix.org/errata/2005/0070
https://www.vupen.com/english/advisories/2005/2649
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=174078
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9080
https://usn.ubuntu.com/231-1/

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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.