FreeBSD 6.3/7.0 access control

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-$5k0.00

A vulnerability was found in FreeBSD 6.3/7.0 (Operating System). It has been declared as critical. Affected by this vulnerability is some unknown processing. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The kernel in FreeBSD 6.3 through 7.0 on amd64 platforms can make an extra swapgs call after a General Protection Fault (GPF), which allows local users to gain privileges by triggering a GPF during the kernel s return from (1) an interrupt, (2) a trap, or (3) a system call.

The weakness was published 09/05/2008 (Website). The advisory is shared at security.freebsd.org. This vulnerability is known as CVE-2008-3890 since 09/02/2008. The exploitation appears to be easy. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/01/2017). MITRE ATT&CK project uses the attack technique T1068 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at X-Force (44905). Similar entries are available at 43943 and 43942.

Productinfo

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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: 8.4

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

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
ATT&CK: T1068

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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OpenVAS ID: 61516
OpenVAS Name: FreeBSD Security Advisory (FreeBSD-SA-08:07.amd64.asc)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/09/2008 🔍
09/02/2008 +116 days 🔍
09/03/2008 +1 days 🔍
09/03/2008 +0 days 🔍
09/04/2008 +1 days 🔍
09/05/2008 +1 days 🔍
09/05/2008 +0 days 🔍
06/06/2013 +1735 days 🔍
03/17/2015 +649 days 🔍
05/01/2017 +776 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: security.freebsd.org
Status: Confirmed

CVE: CVE-2008-3890 (🔍)
X-Force: 44905
SecurityTracker: 1020815 - FreeBSD Kernel amd64 swapgs Bug Lets Local Users Gain Elevated Privileges
Vulnerability Center: 39884 - FreeBSD 6.3 - 7.0 Kernel on amd64 Allows Local Bypass Restrictions by Triggering GPF, High
SecurityFocus: 31003 - FreeBSD/amd64 'swapgs' Local Privilege Escalation Vulnerability
Secunia: 31743 - FreeBSD AMD64 General Protection Fault Privilege Escalation, Less Critical

See also: 🔍

Entryinfo

Created: 03/17/2015 16:11
Updated: 05/01/2017 11:49
Changes: 03/17/2015 16:11 (60), 05/01/2017 11:49 (10)
Complete: 🔍

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