CVE-2015-7204

Mozilla Firefox before 43.0 does not properly store the properties of unboxed objects, which...

6.8 MediumFix available

CVE-2015-7204 is a medium vulnerability (CVSS 6.8) in Mozilla Firefox, published December 15, 2015. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.49%, the 89th percentile. Fixed in iceape 2.40-1.mga5.

Mozilla Firefox before 43.0 does not properly store the properties of unboxed objects, which allows remote attackers to execute arbitrary code via crafted JavaScript variable assignments.

Exploit likelihood

3.49%Down 6.4 points since Feb 4, 2022

What each source reports

NVD Score used 6.8

Mozilla Firefox before 43.0 does not properly store the properties of unboxed objects, which allows remote attackers to execute arbitrary code via crafted JavaScript variable assignments.

Record: CVE-2015-7204
CVSS 2.0: 6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness: CWE-17
Updated: 2026-11-02

CVE List No score

Mozilla Firefox before 43.0 does not properly store the properties of unboxed objects, which allows remote attackers to execute arbitrary code via crafted JavaScript variable assignments.

Record: CVE-2015-7204
Updated: 2026-11-02

EUVDEUVD-2015-7136 No score

Mozilla Firefox before 43.0 does not properly store the properties of unboxed objects, which allows remote attackers to execute arbitrary code via crafted JavaScript variable assignments.

Record: EUVD-2015-7136
Updated: 2026-11-03

GitHub AdvisoriesGHSA-4v8v-q38v-qx4j No score

Mozilla Firefox before 43.0 does not properly store the properties of unboxed objects, which...

Mozilla Firefox before 43.0 does not properly store the properties of unboxed objects, which allows remote attackers to execute arbitrary code via crafted JavaScript variable assignments.

Record: GHSA-4v8v-q38v-qx4j
Updated: 2026-11-02

OSVMGASA-2016-0124 No score

Updated iceape packages fix security vulnerability

Mozilla Firefox before 43.0 and Firefox ESR 38.x before 38.5 allow remote attackers to bypass the Same Origin Policy via data: and view-source: URIs. (CVE-2015-7214)

The WebExtension APIs in Mozilla Firefox before 43.0 allow remote attackers to gain privileges, and possibly obtain sensitive information or conduct cross-site scripting (XSS) attacks, via a crafted web site. (CVE-2015-7223)

Integer underflow in the Metadata::setData function in MetaData.cpp in libstagefright in Mozilla Firefox before 43.0 and Firefox ESR 38.x before 38.5 allows remote attackers to execute arbitrary code or cause a denial of service (incorrect memory allocation and application crash) via an MP4 video file with crafted covr metadata that triggers a buffer overflow. (CVE-2015-7222)

Integer overflow in the MPEG4Extractor::readMetaData function in MPEG4Extractor.cpp in libstagefright in Mozilla Firefox before 43.0 and Firefox ESR 38.x before 38.5 on 64-bit platforms allows remote attackers to execute arbitrary code via a crafted MP4 video file that triggers a buffer overflow. (CVE-2015-7213)

Integer underflow in the RTPReceiverVideo::ParseRtpPacket function in Mozilla Firefox before 43.0 and Firefox ESR 38.x before 38.5 might allow remote attackers to obtain sensitive information, cause a denial of service, or possibly have unspecified other impact by triggering a crafted WebRTC RTP packet. (CVE-2015-7205)

Buffer overflow in the DirectWriteFontInfo::LoadFontFamilyData function in gfx/thebes/gfxDWriteFontList.cpp in Mozilla Firefox before 43.0 might allow remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted font-family name. (CVE-2015-7203)

Buffer overflow in the XDRBuffer::grow function in js/src/vm/Xdr.cpp in Mozilla Firefox before 43.0 might allow remote attackers to cause a denial of service or possibly have unspecified other impact via crafted JavaScript code. (CVE-2015-7220)

Buffer overflow in the nsDeque::GrowCapacity function in xpcom/glue/nsDeque.cpp in Mozilla Firefox before 43.0 might allow remote attackers to cause a denial of service or possibly have unspecified other impact by triggering a deque size change. (CVE-2015-7221)

The gdk-pixbuf configuration in Mozilla Firefox before 43.0 on Linux GNOME platforms incorrectly enables the JasPer decoder, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted JPEG 2000 image. (CVE-2015-7216)

The gdk-pixbuf configuration in Mozilla Firefox before 43.0 on Linux GNOME platforms incorrectly enables the TGA decoder, which allows remote attackers to cause a denial of service (heap-based buffer overflow) via a crafted Truevision TGA image. (CVE-2015-7217)

The HTTP/2 implementation in Mozilla Firefox before 43.0 allows remote attackers to cause a denial of service (integer underflow, assertion failure, and application exit) via a single-byte header frame that triggers incorrect memory allocation. (CVE-2015-7218)

The HTTP/2 implementation in Mozilla Firefox before 43.0 allows remote attackers to cause a denial of service (integer underflow, assertion failure, and application exit) via a malformed PushPromise frame that triggers decompressed-buffer length miscalculation and incorrect memory allocation. (CVE-2015-7219)

Mozilla Firefox before 43.0 mishandles the # (number sign) character in a data: URI, which allows remote attackers to spoof web sites via unspecified vectors. (CVE-2015-7211)

The importScripts function in the Web Workers API implementation in Mozilla Firefox before 43.0 allows remote attackers to bypass the Same Origin Policy by triggering use of the no-cors mode in the fetch API to attempt resource access that throws an exception, leading to information disclosure after a rethrow. (CVE-2015-7215)

Integer overflow in the mozilla::layers::BufferTextureClient::AllocateForSurface function in Mozilla Firefox before 43.0 and Firefox ESR 38.x before 38.5 allows remote attackers…

Record: MGASA-2016-0124
Updated: 2026-11-02

OSVopenSUSE-SU-2024:10071-1 No score

MozillaFirefox-50.1.0-1.1 on GA media

These are all security issues fixed in the MozillaFirefox-50.1.0-1.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:10071-1
Updated: 2026-11-02

Show 4 moreShow less

OSVopenSUSE-SU-2024:10218-1 No score

seamonkey-2.40-6.1 on GA media

These are all security issues fixed in the seamonkey-2.40-6.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:10218-1
Updated: 2026-11-02

OSVopenSUSE-SU-2024:14572-1 No score

firefox-esr-128.5.1-1.1 on GA media

These are all security issues fixed in the firefox-esr-128.5.1-1.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:14572-1
Updated: 2026-11-02

OSVUBUNTU-CVE-2015-7204 No score

Mozilla Firefox before 43.0 does not properly store the properties of unboxed objects, which allows remote attackers to execute arbitrary code via crafted JavaScript variable assignments.

Record: UBUNTU-CVE-2015-7204
Updated: 2026-11-02

OSVUSN-2833-1 No score

firefox vulnerabilities

Andrei Vaida, Jesse Ruderman, Bob Clary, Christian Holler, Jesse Ruderman, Eric Rahm, Robert Kaiser, Harald Kirschner, and Michael Henretty discovered multiple memory safety issues in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2015-7201, CVE-2015-7202)

Ronald Crane discovered three buffer overflows through code inspection. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2015-7203, CVE-2015-7220, CVE-2015-7221)

Cajus Pollmeier discovered a crash during javascript variable assignments in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2015-7204)

Ronald Crane discovered a buffer overflow through code inspection. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2015-7205)

It was discovered that it is possible to read cross-origin URLs following a redirect if performance.getEntries() is used with an iframe to host a page. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to bypass same-origin restrictions. (CVE-2015-7207)

It was discovered that Firefox allows for control characters to be set in cookies. An attacker could potentially exploit this to conduct cookie injection attacks on some web servers. (CVE-2015-7208)

Looben Yang discovered a use-after-free in WebRTC when closing channels in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2015-7210)

Abdulrahman Alqabandi discovered that hash symbol is incorrectly handled when parsing data: URLs. An attacker could potentially exploit this to conduct URL spoofing attacks. (CVE-2015-7211)

Abhishek Arya discovered an integer overflow when allocating large textures. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2015-7212)

Ronald Crane dicovered an integer overflow when processing MP4 format video in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2015-7213)

Tsubasa Iinuma discovered a way to bypass same-origin restrictions using data: and view-source: URLs. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to obtain sensitive information and read local files. (CVE-2015-7214)

Masato Kinugawa discovered a cross-origin information leak in error events in web workers. An attacker could potentially exploit this to obtain sensitive information. (CVE-2015-7215)

Gustavo Grieco discovered that the file chooser crashed on malformed images due to flaws in the Jasper library. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service. (CVE-2015-7216, CVE-2015-7217)

Stuart Larsen discoverd two integer underflows when handling malformed…

Record: USN-2833-1
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`iceape` Mageia:5	before 2.40-1.mga5	2.40-1.mga5
`firefox` Ubuntu:14.04:LTS	before 43.0+build1-0ubuntu0.14.04.1, plus listed versions 24.0+build1-0ubuntu125.0+build3-0ubuntu0.13.10.128.0~b2+build1-0ubuntu228.0+build1-0ubuntu128.0+build2-0ubuntu1 Show 26 moreShow less 28.0+build2-0ubuntu229.0+build1-0ubuntu0.14.04.230.0+build1-0ubuntu0.14.04.331.0+build1-0ubuntu0.14.04.132.0+build1-0ubuntu0.14.04.132.0.3+build1-0ubuntu0.14.04.133.0+build2-0ubuntu0.14.04.134.0+build2-0ubuntu0.14.04.135.0+build3-0ubuntu0.14.04.235.0.1+build1-0ubuntu0.14.04.136.0+build2-0ubuntu0.14.04.436.0.1+build2-0ubuntu0.14.04.136.0.4+build1-0ubuntu0.14.04.137.0+build2-0ubuntu0.14.04.137.0.1+build1-0ubuntu0.14.04.137.0.2+build1-0ubuntu0.14.04.138.0+build3-0ubuntu0.14.04.139.0+build5-0ubuntu0.14.04.139.0.3+build2-0ubuntu0.14.04.140.0+build4-0ubuntu0.14.04.140.0+build4-0ubuntu0.14.04.440.0.3+build1-0ubuntu0.14.04.141.0+build3-0ubuntu0.14.04.141.0.1+build2-0ubuntu0.14.04.141.0.2+build2-0ubuntu0.14.04.142.0+build2-0ubuntu0.14.04.1	43.0+build1-0ubuntu0.14.04.1
`MozillaFirefox` openSUSE:Tumbleweed	before 50.1.0-1.1	50.1.0-1.1
`firefox-esr` openSUSE:Tumbleweed	before 128.5.1-1.1	128.5.1-1.1