01 Record

CVE-2015-0820

Mozilla Firefox before 36.0 does not properly restrict transitions of JavaScript objects from a non-extensible state to an extensible state, which allows remote attackers to bypass a Caja Compiler

UnratedPUBLISHEDCNA: mozilla

CNA base scoreUnratedNo CNA CVSS vector

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02 Description

Mozilla Firefox before 36.0 does not properly restrict transitions of JavaScript objects from a non-extensible state to an extensible state, which allows remote attackers to bypass a Caja Compiler

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 1.74% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 77.6% of scored records. A rank, not a probability.
NVD base score: The NVD has published no score for this record
NVD CVSS vector: No NVD score to derive
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2015-02-25 11:00Z11 YR AGO

Last updated

2024-08-06 04:26Z2 YR AGO

Reserved

2015-01-07

Assigning CNA

mozilla

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-284Improper Access ControlPillar

Data version

5.1

Document digest

fab6ca491ed238a29c2cacd3acf13fe5970b3404f8ec7ea6a9361f49719cf9a6

05 Affected products

VendorProductVersionsPlatforms

canonicalubuntu_linuxNot specified—

mozillafirefoxNot specified—

opensuseopensuseNot specified—

06 References

bugzilla.mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1125389x_refsource_CONFIRM
security.gentoo.orgGLSA-201504-01https://security.gentoo.org/glsa/201504-01vendor-advisoryx_refsource_GENTOO
www.securityfocus.com72757http://www.securityfocus.com/bid/72757vdb-entryx_refsource_BID
lists.opensuse.orgopenSUSE-SU-2015:0404http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00000.htmlvendor-advisoryx_refsource_SUSE
www.oracle.comhttp://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlx_refsource_CONFIRM
www.mozilla.orghttp://www.mozilla.org/security/announce/2015/mfsa2015-27.htmlx_refsource_CONFIRM
lists.opensuse.orgopenSUSE-SU-2015:0570http://lists.opensuse.org/opensuse-updates/2015-03/msg00067.htmlvendor-advisoryx_refsource_SUSE
www.ubuntu.comUSN-2505-1http://www.ubuntu.com/usn/USN-2505-1vendor-advisoryx_refsource_UBUNTU

07 Fixed in

Ubuntu 14.04 LTS

firefox
Fixed in 36.0+build2-0ubuntu0.14.04.4

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.