Acon HOME buffer overflow

acon-home-bo (41915)

High Risk

Description:

Acon is vulnerable to multiple stack-based buffer overflows, caused by improper bounds checking by acon.c, menu.c, and child.c. By sending an overly large $HOME variable or terminal columns number, a local attacker could overflow a buffer and execute arbitrary code on the system with root privileges.

*CVSS:

Base Score:	7.2
Access Vector:	Local
Access Complexity:	Low
Authentication:	None
Confidentiality Impact:	Complete
Integrity Impact:	Complete
Availability Impact:	Complete
Temporal Score:	5.8
Exploitability:	Unproven
Remediation Level:	Unavailable
Report Confidence:	Uncorroborated

Consequences:

Gain Privileges

Remedy:

No remedy available as of July 9, 2011.

References:

• Acon Web page: Acon.
• Debian Bug report logs - #475733: acon: local root exploit.
• Debian Bug report logs - #476603: acon: multiple buffer overflows.
• BID-28862: Acon Multiple Local Buffer Overflow Vulnerabilities
• CVE-2008-1994: Multiple stack-based buffer overflows in (a) acon.c, (b) menu.c, and (c) child.c in Acon 1.0.5-5 through 1.0.5-7 allow local users to execute arbitrary code via (1) a long HOME environment variable or (2) a large number of terminal columns.
• SA29909: Acon Multiple Buffer Overflow Vulnerabilities

Platforms Affected:

• Ahmed Abdel-Hamid Mohamed Acon 1.0.5-5
• Ahmed Abdel-Hamid Mohamed Acon 1.0.5-6
• Ahmed Abdel-Hamid Mohamed Acon 1.0.5-7

Reported:

Apr 12, 2008

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