A vulnerability was found in IBM AIX up to 4.2.1 (Operating System) and classified as critical. This issue affects some unknown functionality of the component writesrv Command. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

buffer overflow in aix writesrv command allows local users to obtain root access.

The issue has been introduced in 08/12/1994. The weakness was shared 10/28/1997. The identification of this vulnerability is CVE-1999-0091. The exploitation is known to be easy. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 1173 days. During that time the estimated underground price was around $5k-$25k.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at X-Force (2295). The entries 14012, 14011, 14010 and 14008 are related to this item.

Productinfo

Type

• Operating System

Vendor

• IBM

Name

• AIX

Version

• 4.1
• 4.1.1
• 4.1.2
• 4.1.3
• 4.1.4
• 4.1.5
• 4.2
• 4.2.1

License

• commercial

CPE 2.3info

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CPE 2.2info

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