Security Advisory SA43201 - stunnel File Descriptor Leak Security Issue

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Secunia Advisory SA43201

stunnel File Descriptor Leak Security Issue

Secunia Advisory

SA43201

Release Date

2011-02-10

Popularity

1,854 view

Comments

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Criticality level

Not critical

Impact

Exposure of system information

Where

Local system

Authentication level

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Report reliability

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Solution Status

Partial Fix

Systems affected

This information is available to Secunia VIM customers

Approve distribution

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Software:

Stunnel 4.x

Secunia CVSS Score

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CVE Reference(s)

No CVE references.

Description

A security issue has been reported in stunnel, which can be exploited by malicious, local users to disclose certain system information.

The security issue is caused due to a race condition within the handling of file descriptors in combination with FD_CLOEXEC, which can result in privileged file descriptors being leaked.

This is related to:
SA9691

Solution
The security issue is fixed in version 4.35 on systems running Linux Kernel version 2.6.28 or later and glibc 2.10 or later. However, this may still be an issue on other UNIX-like systems.

Provided and/or discovered by
Reported by the vendor.

Original Advisory
http://www.stunnel.org/?page=sdf_ChangeLog

Other references
Further details available to Secunia VIM customers

Deep Links
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Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: stunnel File Descriptor Leak Security Issue

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Secunia Advisory SA43201

stunnel File Descriptor Leak Security Issue

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