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Fencer Intel
medium 4.3

CVE-2013-7436 json

noVNC before 0.5 does not set the secure flag for a cookie in an https session, which makes it easier for remote attackers to capture this…

published 11y ago modified 4mo ago also EUVD-2013-7200

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.2%
EPSS 2.2% chance of exploitation in 30 days, percentile 82%
public exploits
0
none known

Summary

noVNC before 0.5 does not set the secure flag for a cookie in an https session, which makes it easier for remote attackers to capture this cookie by intercepting its transmission within an http session.

Patch / fix

  • novnc Debian 14, Debian 13, Debian 12 1:0.4+dfsg+1+20131010+gitf68af8af3d-4

debian advisories DEBIAN-CVE-2013-7436

  • novnc openstack 5, openstack 4 0.5.1-2.el6ost
  • novnc openstack 6, openstack 5 0.5.1-2.el7ost

red hat advisories RHSA-2015:0884RHSA-2015:0833RHSA-2015:0834RHSA-2015:0788

Is CVE-2013-7436 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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-2013-7436 updated cvss 6.8

novnc: session hijack through insecurely set session token cookies

  • Red Hat Enterprise Linux OpenStack Platform 4.0 novnc 0.5.1-2.el6ost
    fixed: vendor fix RHSA-2015:0884
  • Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6 novnc 0.5.1-2.el6ost
    fixed: vendor fix RHSA-2015:0833
  • Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7 novnc 0.5.1-2.el7ost
    fixed: vendor fix RHSA-2015:0834
  • Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7 novnc 0.5.1-2.el7ost
    fixed: vendor fix RHSA-2015:0788
  • Red Hat Enterprise Virtualization 3 novnc
    not affected: vulnerable code not present

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

2.17% chance of exploitation in the next 30 days, higher than 82% 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:P/I:N/A:N

Classification

Weakness

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.