FreeBSD crontab crontab.c link following

HistoryDiffrelatejsonxmlCTI

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.
3.5	$0-$5k	0.00

Summaryinfo

A vulnerability identified as problematic has been detected in FreeBSD. This affects an unknown part of the file crontab.c of the component crontab. Performing a manipulation results in link following. This vulnerability is identified as CVE-2011-1073. There is not any exploit available.

Detailsinfo

A vulnerability was found in FreeBSD (Operating System) (affected version not known). It has been classified as problematic. This affects some unknown functionality of the file crontab.c of the component crontab. The manipulation with an unknown input leads to a link following vulnerability. CWE is classifying the issue as CWE-59. The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. This is going to have an impact on confidentiality. The summary by CVE is:

crontab.c in crontab in FreeBSD and Apple Mac OS X allows local users to (1) determine the existence of arbitrary files via a symlink attack on a /tmp/crontab.XXXXXXXXXX temporary file and (2) perform MD5 checksum comparisons on arbitrary pairs of files via two symlink attacks on /tmp/crontab.XXXXXXXXXX temporary files.

The weakness was released 03/04/2011 by Dan Rosenberg (Website). It is possible to read the advisory at securityfocus.com. This vulnerability is uniquely identified as CVE-2011-1073 since 02/24/2011. Attacking locally is a requirement. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/09/2018).

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 (65899) and SecurityFocus (BID 46604†). Entry connected to this vulnerability is available at VDB-56752. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Operating System

Name

FreeBSD

License

open-source

Website

Product: https://www.freebsd.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.5

VulDB Base Score: 4.0
VulDB Temp Score: 3.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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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: Link following
CWE: CWE-59
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Unproven

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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/24/2011 🔍
02/28/2011 +4 days 🔍
03/04/2011 +4 days 🔍
03/04/2011 +0 days 🔍
03/20/2015 +1477 days 🔍
01/09/2018 +1026 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: securityfocus.com⛔
Researcher: Dan Rosenberg
Status: Not defined

CVE: CVE-2011-1073 (🔍)
GCVE (CVE): GCVE-0-2011-1073
GCVE (VulDB): GCVE-100-56751
X-Force: 65899 - FreeBSD realpath() information disclosure
SecurityFocus: 46604 - FreeBSD Crontab Multiple Information Disclosure Vulnerabilities

See also: 🔍

Entryinfo

Created: 03/20/2015 16:16
Updated: 01/09/2018 15:33
Changes: 03/20/2015 16:16 (50), 01/09/2018 15:33 (5)
Complete: 🔍
Cache ID: 216:49C:103