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Fencer Intel
critical 9.3

CVE-2010-1585 json

The nsIScriptableUnescapeHTML.parseFragment method in the ParanoidFragmentSink protection mechanism in Mozilla Firefox before 3.5.17 and 3.…

published 16y ago modified 4mo ago also EUVD-2010-1612

cvss
9.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.5%
EPSS 4.5% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

The nsIScriptableUnescapeHTML.parseFragment method in the ParanoidFragmentSink protection mechanism in Mozilla Firefox before 3.5.17 and 3.6.x before 3.6.14, Thunderbird before 3.1.8, and SeaMonkey before 2.0.12 does not properly sanitize HTML in a chrome document, which makes it easier for remote attackers to execute arbitrary JavaScript with chrome privileges via a javascript: URI in input to an extension, as demonstrated by a javascript:alert sequence in (1) the HREF attribute of an A element or (2) the ACTION attribute of a FORM element.

Patch / fix

  • firefox RHEL 4 3.6.14-4.el4
  • firefox RHEL 5 3.6.14-4.el5_6
  • firefox RHEL 6 3.6.14-4.el6_0
  • xulrunner RHEL 5 1.9.2.14-4.el5_6
  • xulrunner RHEL 6 1.9.2.14-3.el6_0
  • thunderbird RHEL 6 3.1.8-4.el6_0

red hat advisories RHSA-2011:0310RHSA-2011:0311

  • MozillaThunderbird openSUSE Tumbleweed 45.5.1-1.1

opensuse advisories openSUSE-SU-2024:10230-1

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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-2010-1585 updated cvss 6.8

javascript: URLs in chrome documents (MFSA 2011-08)

  • Red Hat Enterprise Linux (v. 5.6.z server) firefox 3.6.14-4.el5_6, xulrunner 1.9.2.14-4.el5_6 Red Hat Enterprise Linux AS version 4 firefox 3.6.14-4.el4 Red Hat Enterprise Linux Desktop (v. 6) firefox 3.6.14-4.el6_0, thunderbird 3.1.8-4.el6_0, xulrunner 1.9.2.14-3.el6_0 Red Hat Enterprise Linux Desktop Optional (v. 6) xulrunner 1.9.2.14-3.el6_0 Red Hat Enterprise Linux Desktop version 4 firefox 3.6.14-4.el4 Red Hat Enterprise Linux ES version 4 firefox 3.6.14-4.el4
    +6 more products
    Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox 3.6.14-4.el6_0, xulrunner 1.9.2.14-3.el6_0 Red Hat Enterprise Linux Server (v. 6) firefox 3.6.14-4.el6_0, xulrunner 1.9.2.14-3.el6_0 Red Hat Enterprise Linux Server Optional (v. 6) thunderbird 3.1.8-4.el6_0, xulrunner 1.9.2.14-3.el6_0 Red Hat Enterprise Linux Workstation (v. 6) firefox 3.6.14-4.el6_0, thunderbird 3.1.8-4.el6_0, xulrunner 1.9.2.14-3.el6_0 Red Hat Enterprise Linux Workstation Optional (v. 6) xulrunner 1.9.2.14-3.el6_0 Red Hat Enterprise Linux WS version 4 firefox 3.6.14-4.el4
    fixed: vendor fix RHSA-2011:0310

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

4.47% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • security-assessment.com http://www.security-assessment.com/files/whitepapers/Cross_Context_Scripting_with_Firefox.pdf referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

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.