VDB-14125 · CVE-1999-0126 · XFDB 2096

Xfree86 xterm/xaw memory corruption

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.4	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic has been found in Xfree86. Affected by this issue is some unknown functionality of the component xterm/xaw. This manipulation causes memory corruption. This vulnerability is registered as CVE-1999-0126. Furthermore, an exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Xfree86 (version now known) and classified as critical. Affected by this vulnerability is some unknown processing of the component xterm/xaw. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

SGI IRIX buffer overflow in xterm and Xaw allows root access.

The weakness was published 05/03/1998 (Website). The advisory is shared at ciac.org. This vulnerability is known as CVE-1999-0126. The exploitation appears to be easy. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available.

A public exploit has been developed by David Hedley and been published even before and not after the advisory. It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 340 days. During that time the estimated underground price was around $0-$5k.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (2096), Exploit-DB (338) and OSVDB (8517†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

Xfree86

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.3
VulDB Meta Temp Score: 8.4

VulDB Base Score: 9.3
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: David Hedley
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/28/1997 🔍
05/28/1997 +0 days 🔍
05/03/1998 +340 days 🔍
05/03/1998 +0 days 🔍
04/09/2004 +2167 days 🔍
06/19/2014 +3723 days 🔍
12/29/2024 +3846 days 🔍

Sourcesinfo

Advisory: ciac.org
Status: Confirmed

CVE: CVE-1999-0126 (🔍)
GCVE (CVE): GCVE-0-1999-0126
GCVE (VulDB): GCVE-100-14125
X-Force: 2096
OSVDB: 8517 - X11 Xaw Library Local Overflow

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 06/19/2014 15:06
Updated: 12/29/2024 14:48
Changes: 06/19/2014 15:06 (48), 04/03/2019 18:43 (9), 12/29/2024 14:48 (18)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.