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Fencer Intel
medium 4.3

CVE-2011-1094 json

kio/kio/tcpslavebase.cpp in KDE KSSL in kdelibs before 4.6.1 does not properly verify that the server hostname matches the domain name of t…

published 2011-03-16 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-1108

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 63%
public exploits
0
none known

Summary

kio/kio/tcpslavebase.cpp in KDE KSSL in kdelibs before 4.6.1 does not properly verify that the server hostname matches the domain name of the subject of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a certificate issued by a legitimate Certification Authority for an IP address, a different vulnerability than CVE-2009-2702.

Patch / fix

  • kdelibs RHEL 6 6:4.3.4-11.el6_0.2
  • kdelibs-common RHEL 6 6:4.3.4-11.el6_0.2
  • kdelibs-apidocs RHEL 6 6:4.3.4-11.el6_0.2

red hat advisories RHSA-2011:0464

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-1094 updated cvss 4.3

kdelibs: SSL certificate for IP address accepted as valid for hosts that resolve to the IP

  • Red Hat Enterprise Linux Desktop (v. 6) kdelibs 4.3.4-11.el6_0.2, kdelibs-common 4.3.4-11.el6_0.2, kdelibs-apidocs 4.3.4-11.el6_0.2 Red Hat Enterprise Linux Desktop Optional (v. 6) kdelibs 4.3.4-11.el6_0.2, kdelibs-common 4.3.4-11.el6_0.2, kdelibs-apidocs 4.3.4-11.el6_0.2 Red Hat Enterprise Linux HPC Node Optional (v. 6) kdelibs 4.3.4-11.el6_0.2, kdelibs-common 4.3.4-11.el6_0.2, kdelibs-apidocs 4.3.4-11.el6_0.2 Red Hat Enterprise Linux Server (v. 6) kdelibs 4.3.4-11.el6_0.2, kdelibs-common 4.3.4-11.el6_0.2, kdelibs-apidocs 4.3.4-11.el6_0.2 Red Hat Enterprise Linux Workstation (v. 6) kdelibs 4.3.4-11.el6_0.2, kdelibs-common 4.3.4-11.el6_0.2, kdelibs-apidocs 4.3.4-11.el6_0.2
    fixed: vendor fix RHSA-2011:0464

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.00% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

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.