CVE-2011-4408 json
The Single Sign On Client (ubuntu-sso-client) for Ubuntu 11.04 and 11.10 does not properly validate SSL certificates when using HTTPS, whic…
published 2012-06-16 14 y ago modified 2026-06-16 4 mo ago also EUVD-2011-4337
- cvss
- 6.8
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 69%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- ubuntu.com/usn/USN-1464-1 advisory
Exploit prediction
1.23% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
References
-
ubuntu.com
/usn/USN-1464-1
vendor-advisory, patch
-
secunia.com
/advisories/49448
third-party-advisory, vendor-advisory
-
exchange.xforce.ibmcloud.com
/vulnerabilities/76112
vdb-entry
-
osvdb.org
/82747
vdb-entry
-
securityfocus.com
/bid/53829
vdb-entry
Sources
- CVE List CVE-2011-4408
- NVD CVE-2011-4408
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.