NetBSD up to 5.0.1 pseudocode access control

Summaryinfo

A vulnerability classified as problematic was found in NetBSD. This issue affects some unknown processing. Such manipulation of the argument pseudocode leads to access control. This vulnerability is referenced as CVE-2009-2793. Furthermore, an exploit is available.

Detailsinfo

A vulnerability was found in NetBSD (Operating System). It has been rated as problematic. Affected by this issue is an unknown function. The manipulation of the argument pseudocode with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The kernel in NetBSD, probably 5.0.1 and earlier, on x86 platforms does not properly handle a pre-commit failure of the iret instruction, which might allow local users to gain privileges via vectors related to a tempEIP pseudocode variable that is outside of the code-segment limits.

The weakness was published 09/18/2009 as not defined posting (Bugtraq). The advisory is shared for download at securityfocus.com. This vulnerability is handled as CVE-2009-2793 since 08/17/2009. The exploitation is known to be easy. The attack needs to be approached locally. No form of authentication is required for exploitation. Technical details as well as a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1068.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Exploit-DB (33229). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Operating System

Name

• NetBSD

Version

• 0.8
• 0.9
• 1.0
• 1.1
• 1.2
• 1.2.1
• 1.3
• 1.3.1
• 1.3.2
• 1.3.3
• 1.5
• 1.5.1
• 1.5.2
• 1.5.3
• 1.6
• 1.6.1
• 1.6.2
• 2.0
• 2.0.1
• 2.0.2
• 2.0.3
• 3.0
• 3.0.1
• 3.0.2
• 4.0
• 4.0.1
• 5.0
• 5.0.1

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

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Timelineinfo

Sourcesinfo

Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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