IBM AIX 4.2 rwhod hostname memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability classified as critical was found in IBM AIX 4.2 (Operating System). Affected by this vulnerability is an unknown code block of the component rwhod. The manipulation of the argument hostname as part of a UDP Packet leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

buffer overflow in rwhod on aix and other operating systems allows remote attackers to execute arbitrary code via a udp packet with a long hostname.

The issue has been introduced in 05/17/1996. The weakness was presented 08/21/1996 (Website). The advisory is shared at This vulnerability is known as CVE-1999-0085. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 96 days. During that time the estimated underground price was around $5k-$25k.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (118) and Vulnerability Center (SBV-584). Additional details are provided at


  • FreeBSD 6.2
  • IBM AIX 4.2
  • NetBSD 2.0.4





CPE 2.3infoedit

CPE 2.2infoedit


VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfoedit

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

ISS Proventia IPS: 🔍


05/17/1996 🔍
08/21/1996 +96 days 🔍
08/21/1996 +0 days 🔍
08/21/1996 +0 days 🔍
12/30/2002 +2322 days 🔍
06/17/2014 +4187 days 🔍
04/18/2016 +671 days 🔍
05/07/2019 +1114 days 🔍



Status: Not defined

CVE: CVE-1999-0085 (🔍)
X-Force: 118
Vulnerability Center: 584 - CVE Id, Medium

Misc.: 🔍


Created: 06/17/2014 05:18 PM
Updated: 05/07/2019 04:09 PM
Changes: (1) advisory_url
Complete: 🔍


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