22134 : Multics on HIS 645 Unlocked Stack Base Master Mode Privilege Escalation
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
4	365	over 6 years ago	over 3 years ago	0 times	85%

Timeline

Discovery Date	Disclosure Date
1972-06-01	1974-06-01

Keywords

karg74

Description

Multics contains a flaw that may allow a local user to elevate privileges. The issue is due to a flaw in the unlocked stack base system. It is possible for an attacker to manipulate the signaller to enter at location 0 with an invalid index register before setting the stack pointer to an area of extraneous storage in a link segment (such as emergency_shutdown.link). This could allow an attacker to place custom code in the link that would be executed with ring0 privileges.

Classification

Location: Local Access Required
Attack Type: Input Manipulation
Impact: Loss of Integrity
Exploit: Exploit Public

Solution

Currently, there are no known upgrades, patches, or workarounds available to correct this issue.

Products

Multics

Multics on 645

Unknown or Unspecified

References

Related OSVDB ID: 22128 22129 22130 22131 22132 22133 22135 22136
Other Advisory URL: http://cnscenter.future.co.kr/resource/rsc-center/vendor-wp/ibm/RC22534.pdf
http://csrc.nist.gov/publications/history/karg74.pdf
Keyword: karg74

Credit

Unknown or Incomplete

CVSSv2 Score

We currently have no CVSS2 data on this vulnerability. Feel free to suggest it.

Blogs

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