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.
8.0	$0-$5k	0.00

A vulnerability, which was classified as critical, was found in FreeBSD 2.2 (Operating System). Affected is some unknown functionality of the file mount_union. The manipulation with an unknown input leads to a symlink vulnerability. CWE is classifying the issue as CWE-61. The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

FreeBSD mount_union command allows local users to gain root privileges via a symlink attack.

The weakness was shared 12/01/1999 (Website). The advisory is shared for download at archives.neohapsis.com. This vulnerability is traded as CVE-1999-0963. The exploitability is told to be easy. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

After even before and not, there has been an exploit disclosed. The vulnerability was handled as a non-public zero-day exploit for at least 1293 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 (3705). The entry 15021 is related to this item.

Productinfo

Type

• Operating System

Name

• FreeBSD

Version

• 2.2

License

• open-source

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.4
VulDB Meta Temp Score: 8.0

VulDB Base Score: 8.4
VulDB Temp Score: 8.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Symlink
CWE: CWE-61 / CWE-59
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/17/1996 🔍
05/17/1996 +0 days 🔍
12/01/1999 +1293 days 🔍
12/01/1999 +0 days 🔍
04/09/2004 +1590 days 🔍
09/02/2009 +1972 days 🔍
06/22/2014 +1754 days 🔍
02/13/2017 +967 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: archives.neohapsis.com
Status: Not defined

CVE: CVE-1999-0963 (🔍)
X-Force: 3705
Vulnerability Center: 23369 - FreeBSD 2.2 - 2.2.8 Mount_Union Command Local Root Privileges Escalation Vulnerability, High
OSVDB: 6088 - FreeBSD vfsload() mount_union Symlink Privilege Escalation

See also: 🔍

Entryinfo

Created: 06/22/2014 15:36
Updated: 02/13/2017 12:33
Changes: 06/22/2014 15:36 (51), 02/13/2017 12:33 (9)
Complete: 🔍

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