stunnel: Arbitrary code execution

1. Gentoo Linux Security Advisory

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-misc/stunnel	< 4.44	>= 4.44, < 4	All supported architectures

Related bugreports: #379859

A vulnerability was found in stunnel, allowing remote attackers to cause a Denial of Service and potentially arbitrary code execution.

2. Impact Information

The stunnel program is designed to work as an SSL encryption wrapper between a client and a local or remote server.

An unspecified heap vulnerability was discovered in stunnel.

The vulnerability may possibly be leveraged to perform remote code execution or a Denial of Service attack.

3. Resolution Information

There is no known workaround at this time.

All stunnel 4.x users should upgrade to the latest version:

Code Listing 3.1: Resolution

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-misc/stunnel-4.44"

4. References

Page updated February 29, 2012

Summary: This is a Gentoo Linux Security Advisory

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