Linux Security
Linux Security
Linux Security

Debian: DSA-3398-1: strongswan security update

Date 16 Nov 2015
330
Posted By LinuxSecurity Advisories
Tobias Brunner found an authentication bypass vulnerability in strongSwan, an IKE/IPsec suite. Due to insufficient validation of its local state the server
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

- -------------------------------------------------------------------------
Debian Security Advisory DSA-3398-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
https://www.debian.org/security/                        Yves-Alexis Perez
November 16, 2015                     https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package        : strongswan
CVE ID         : CVE-2015-8023

Tobias Brunner found an authentication bypass vulnerability in
strongSwan, an IKE/IPsec suite.

Due to insufficient validation of its local state the server
implementation of the EAP-MSCHAPv2 protocol in the eap-mschapv2 plugin
can be tricked into successfully concluding the authentication without
providing valid credentials.

It's possible to recognize such attacks by looking at the server logs.
The following log message would be seen during the client
authentication:

  EAP method EAP_MSCHAPV2 succeeded, no MSK established

For the oldstable distribution (wheezy), this problem has been fixed
in version 4.5.2-1.5+deb7u8.

For the stable distribution (jessie), this problem has been fixed in
version 5.2.1-6+deb8u2.

For the testing distribution (stretch), this problem has been fixed
in version 5.3.3-3.

For the unstable distribution (sid), this problem has been fixed in
version 5.3.3-3.

We recommend that you upgrade your strongswan packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it.

LinuxSecurity Poll

How frequently do you patch/update your system?

No answer selected. Please try again.
Please select either existing option or enter your own, however not both.
Please select minimum 0 answer(s) and maximum 3 answer(s).
/main-polls/52-how-frequently-do-you-patch-update-your-system?task=poll.vote&format=json
52
radio
[{"id":"179","title":"As soon as patches\/updates are released - I track advisories for my distro(s) diligently","votes":"47","type":"x","order":"1","pct":79.66,"resources":[]},{"id":"180","title":"Every so often, when I think of it","votes":"7","type":"x","order":"2","pct":11.86,"resources":[]},{"id":"181","title":"Hardly ever","votes":"5","type":"x","order":"3","pct":8.47,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350

Please vote first in order to view vote results.

VOTE ON THE POLL PAGE


VIEW MORE POLLS

bottom 200

Please enable / Bitte aktiviere JavaScript!
Veuillez activer / Por favor activa el Javascript![ ? ]

We use cookies to provide and improve our services. By using our site, you consent to our Cookie Policy.