CVE-2011-4408

Severity: medium (CVSS 6.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2012-06-16 · updated 2026-06-16

Description

The Single Sign On Client (ubuntu-sso-client) for Ubuntu 11.04 and 11.10 does not properly validate SSL certificates when using HTTPS, which allows remote attackers to spoof a server and modify or read sensitive data via a man-in-the-middle (MITM) attack.

Affected products

Canonical Ubuntu Linux: 11.04, 11.10

References

http://osvdb.org/82747
http://secunia.com/advisories/49448
http://www.securityfocus.com/bid/53829
http://www.ubuntu.com/usn/USN-1464-1
https://exchange.xforce.ibmcloud.com/vulnerabilities/76112
http://osvdb.org/82747
http://secunia.com/advisories/49448
http://www.securityfocus.com/bid/53829
http://www.ubuntu.com/usn/USN-1464-1
https://exchange.xforce.ibmcloud.com/vulnerabilities/76112

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