CVE-2015-4518
The Reader View implementation in Mozilla Firefox before 42.0 has an improper whitelist, which...
The Reader View implementation in Mozilla Firefox before 42.0 has an improper whitelist, which makes it easier for remote attackers to bypass the Content Security Policy (CSP) protection mechanism and conduct cross-site scripting (XSS) attacks via vectors involving SVG animations and the about:reader URL.
Exploit likelihood
What each source reports
NVD Score used
The Reader View implementation in Mozilla Firefox before 42.0 has an improper whitelist, which makes it easier for remote attackers to bypass the Content Security Policy (CSP) protection mechanism and conduct cross-site scripting (XSS) attacks via vectors involving SVG animations and the about:reader URL.
- Record
CVE-2015-4518- CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
The Reader View implementation in Mozilla Firefox before 42.0 has an improper whitelist, which makes it easier for remote attackers to bypass the Content Security Policy (CSP) protection mechanism and conduct cross-site scripting (XSS) attacks via vectors involving SVG animations and the about:reader URL.
- Record
CVE-2015-4518- Updated
- 2026-11-02
EUVDEUVD-2015-4538 No score
The Reader View implementation in Mozilla Firefox before 42.0 has an improper whitelist, which makes it easier for remote attackers to bypass the Content Security Policy (CSP) protection mechanism and conduct cross-site scripting (XSS) attacks via vectors involving SVG animations and the about:reader URL.
- Record
EUVD-2015-4538- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-23c8-qcpq-5v6v No score
The Reader View implementation in Mozilla Firefox before 42.0 has an improper whitelist, which...
The Reader View implementation in Mozilla Firefox before 42.0 has an improper whitelist, which makes it easier for remote attackers to bypass the Content Security Policy (CSP) protection mechanism and conduct cross-site scripting (XSS) attacks via vectors involving SVG animations and the about:reader URL.
- Record
GHSA-23c8-qcpq-5v6v- Weakness
- CWE-79
- Updated
- 2026-11-02
OSVMGASA-2015-0447 No score
Updated iceape packages fix security vulnerabilities
Updated iceape packages fix security issues:
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 42.0 and Firefox ESR 38.x before 38.4 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors. (CVE-2015-4513)
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 42.0 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors. (CVE-2015-4514)
Mozilla Firefox before 42.0, when NTLM v1 is enabled for HTTP authentication, allows remote attackers to obtain sensitive hostname information by constructing a crafted web site that sends an NTLM request and reads the Workstation field of an NTLM type 3 message. (CVE-2015-4515)
The Reader View implementation in Mozilla Firefox before 42.0 has an improper whitelist, which makes it easier for remote attackers to bypass the Content Security Policy (CSP) protection mechanism and conduct cross-site scripting (XSS) attacks via vectors involving SVG animations and the about:reader URL. (CVE-2015-4518)
The Add-on SDK in Mozilla Firefox before 42.0 misinterprets a "script: false" panel setting, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via inline JavaScript code that is executed within a third-party extension. (CVE-2015-7187)
Mozilla Firefox before 42.0 and Firefox ESR 38.x before 38.4 allow remote attackers to bypass the Same Origin Policy for an IP address origin, and conduct cross-site scripting (XSS) attacks, by appending whitespace characters to an IP address string. (CVE-2015-7188)
Race condition in the JPEGEncoder function in Mozilla Firefox before 42.0 and Firefox ESR 38.x before 38.4 allows remote attackers to execute arbitrary code or cause a denial of service (heap-based buffer overflow) via vectors involving a CANVAS element and crafted JavaScript code. (CVE-2015-7189)
Mozilla Firefox before 42.0 and Firefox ESR 38.x before 38.4 improperly follow the CORS cross-origin request algorithm for the POST method in situations involving an unspecified Content-Type header manipulation, which allows remote attackers to bypass the Same Origin Policy by leveraging the lack of a preflight-request step. (CVE-2015-7193)
Buffer underflow in libjar in Mozilla Firefox before 42.0 and Firefox ESR 38.x before 38.4 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted ZIP archive. (CVE-2015-7194)
The URL parsing implementation in Mozilla Firefox before 42.0 improperly recognizes escaped characters in hostnames within Location headers, which allows remote attackers to obtain sensitive information via vectors involving a redirect. (CVE-2015-7195)
Mozilla Firefox before 42.0 and Firefox ESR 38.x before 38.4, when a Java plugin is enabled, allow remote attackers to cause a denial of service (incorrect garbage collection and application crash) or possibly execute arbitrary code via a crafted Java applet that deallocates an in-use JavaScript wrapper. (CVE-2015-7196)
Buffer overflow in the rx::TextureStorage11 class in ANGLE, as used in Mozilla Firefox before 42.0 and Firefox ESR 38.x before 38.4, allows remote attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact via crafted texture data. (CVE-2015-7198)
The (1) AddWeightedPathSegLists and (2) SVGPathSegListSMILType::Interpolate functions in Mozilla Firefox before 42.0 and Firefox ESR 38.x before 38.4 lack status checking, which allows remote attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact via a crafted SVG document. (CVE-2015-7199)
The CryptoKey interface implementation in Mozilla Firefox before 42.0 and Firefox ESR 38.x before 38.4 lacks status…
- Record
MGASA-2015-0447- 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-2015-4518 No score
The Reader View implementation in Mozilla Firefox before 42.0 has an improper whitelist, which makes it easier for remote attackers to bypass the Content Security Policy (CSP) protection mechanism and conduct cross-site scripting (XSS) attacks via vectors involving SVG animations and the about:reader URL.
- Record
UBUNTU-CVE-2015-4518- Updated
- 2026-11-02
OSVUSN-2785-1 No score
firefox vulnerabilities
Christian Holler, David Major, Jesse Ruderman, Tyson Smith, Boris Zbarsky, Randell Jesup, Olli Pettay, Karl Tomlinson, Jeff Walden, Gary Kwong, Andrew McCreight, Georg Fritzsche, and Carsten Book 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-2015-4513, CVE-2015-4514)
Tim Brown discovered that Firefox discloses the hostname during NTLM authentication in some circumstances. If a user were tricked in to opening a specially crafted website with NTLM v1 enabled, an attacker could exploit this to obtain sensitive information. (CVE-2015-4515)
Mario Heiderich and Frederik Braun discovered that CSP could be bypassed in reader mode in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to conduct cross-site scripting (XSS) attacks. (CVE-2015-4518)
Tyson Smith and David Keeler discovered a use-after-poison and buffer overflow in NSS. 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-2015-7181, CVE-2015-7182)
Ryan Sleevi discovered an integer overflow in NSPR. 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-2015-7183)
Jason Hamilton, Peter Arremann and Sylvain Giroux discovered that panels created via the Addon SDK with { script: false } could still execute inline script. If a user installed an addon that relied on this as a security mechanism, an attacker could potentially exploit this to conduct cross-site scripting (XSS) attacks, depending on the source of the panel content. (CVE-2015-7187)
Michał Bentkowski discovered that adding white-space to hostnames that are IP address can bypass same-origin protections. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to conduct cross-site scripting (XSS) attacks. (CVE-2015-7188)
Looben Yang discovered a buffer overflow during script interactions with the canvas element 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-2015-7189)
Shinto K Anto discovered that CORS preflight is bypassed when receiving non-standard Content-Type headers in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to bypass same-origin restrictions. (CVE-2015-7193)
Gustavo Grieco discovered a buffer overflow in libjar 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-2015-7194)
Frans Rosén discovered that certain escaped characters in the Location header are parsed incorrectly, resulting in a navigation to the previously parsed version of a URL. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to obtain site specific tokens. (CVE-2015-7195)
Vytautas Staraitis discovered a garbage collection crash when interacting with Java applets in some circumstances. If a user were tricked in to opening a specially crafted website with the Java plugin installed, an attacker could potentially exploit this to…
- Record
USN-2785-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
iceapeMageia:5 From an advisory covering 15 CVEs |
before 2.39-1.mga5 | 2.39-1.mga5 |
firefoxUbuntu:14.04:LTS |
before 42.0+build2-0ubuntu0.14.04.1, plus listed versions 24.0+build1-0ubuntu125.0+build3-0ubuntu0.13.10.128.0~b2+build1-0ubuntu228.0+build1-0ubuntu128.0+build2-0ubuntu1 Show 25 moreShow less28.0+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+build2-0ubuntu0.14.04.1 |
42.0+build2-0ubuntu0.14.04.1 |
firefoxUbuntu:14.04:LTS From an advisory covering 18 CVEs |
before 42.0+build2-0ubuntu0.14.04.1, plus listed versions 24.0+build1-0ubuntu125.0+build3-0ubuntu0.13.10.128.0~b2+build1-0ubuntu228.0+build1-0ubuntu128.0+build2-0ubuntu1 Show 25 moreShow less28.0+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+build2-0ubuntu0.14.04.1 |
42.0+build2-0ubuntu0.14.04.1 |
MozillaFirefoxopenSUSE:Tumbleweed From an advisory covering 899 CVEs |
before 50.1.0-1.1 | 50.1.0-1.1 |
firefox-esropenSUSE:Tumbleweed From an advisory covering 1860 CVEs |
before 128.5.1-1.1 | 128.5.1-1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2015-4518 is a medium vulnerability (CVSS 4.3) in Mozilla Firefox, published November 4, 2015. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.97%, the 80th percentile. Fixed in firefox 42.0+build2-0ubuntu0.14.04.1.
References
securitytracker.com/id/1034069
security.gentoo.org/glsa/201512-10
mozilla.org/security/announce/2015/mfsa2015-118.html
ubuntu.com/usn/USN-2785-1
bugzilla.mozilla.org/show_bug.cgi?id=1136692
oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
Show 194 moreShow less
lists.opensuse.org/opensuse-security-announce/2015-11/msg00015.html
nvd.nist.gov/vuln/detail/CVE-2015-4518
github.com/advisories/GHSA-23c8-qcpq-5v6v
advisories.mageia.org/MGASA-2015-0447.html
bugs.mageia.org/show_bug.cgi?id=17119
seamonkey-project.org/releases/seamonkey2.39
ubuntu.com/security/CVE-2015-4518
cve.org/CVERecord?id=CVE-2015-4518
suse.com/security/cve/CVE-2008-5913
Left out here: 1,931 references and the rest of 2 source descriptions. The JSON record has them.