FreeBSD 7.1/7.2/7.3/8.0/8.1 File System access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.9$0-$5k0.00

A vulnerability classified as critical has been found in FreeBSD 7.1/7.2/7.3/8.0/8.1 (Operating System). This affects an unknown functionality of the component File System. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

FreeBSD 7.1 through 8.1-PRERELEASE does not copy the read-only flag when creating a duplicate mbuf buffer reference, which allows local users to cause a denial of service (system file corruption) and gain privileges via the sendfile system call.

The weakness was disclosed 07/13/2010 (Website). It is possible to read the advisory at vupen.com. This vulnerability is uniquely identified as CVE-2010-2693 since 07/12/2010. The exploitability is told to be easy. Attacking locally is a requirement. No form of authentication is needed for exploitation. Technical details are unknown but a public exploit is available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

A public exploit has been developed in ANSI C. The exploit is shared for download at securityfocus.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 50334 (FreeBSD : FreeBSD -- Lost mbuf flag resulting in data corruption (7a09a8df-ca41-11df-aade-0050568f000c)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks.

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 databases at X-Force (60293) and Tenable (50334).

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 8.4
VulDB Meta Temp Score: 7.9

VulDB Base Score: 8.4
VulDB Temp Score: 7.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 50334
Nessus Name: FreeBSD : FreeBSD -- Lost mbuf flag resulting in data corruption (7a09a8df-ca41-11df-aade-0050568f000c)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 67716
OpenVAS Name: FreeBSD Security Advisory (FreeBSD-SA-10:07.mbuf.asc)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/12/2010 🔍
07/13/2010 +1 days 🔍
07/13/2010 +0 days 🔍
07/13/2010 +0 days 🔍
07/13/2010 +0 days 🔍
07/13/2010 +0 days 🔍
07/13/2010 +0 days 🔍
11/01/2010 +111 days 🔍
03/19/2015 +1599 days 🔍
09/20/2021 +2377 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: vupen.com⛔
Status: Confirmed

CVE: CVE-2010-2693 (🔍)
X-Force: 60293
SecurityTracker: 1024182 - FreeBSD mbug Flag Error Lets Local Users Gain Elevated Privileges
Vulnerability Center: 27983 - FreeBSD 7.1-8.1-PRERELEASE Local DoS and Privilege Escalation Vulnerability, High
SecurityFocus: 41577 - FreeBSD mbuf Handling Local Privilege Escalation Vulnerability
Secunia: 40567 - FreeBSD mbuf Handling Privilege Escalation Vulnerability, Less Critical
Vupen: ADV-2010-1787

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

Entryinfo

Created: 03/19/2015 14:37
Updated: 09/20/2021 14:03
Changes: 03/19/2015 14:37 (58), 03/08/2017 21:33 (20), 09/20/2021 14:03 (4)
Complete: 🔍

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