Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 process JavaScript event-handler attributes of a MARQUEE element within a sandb
Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 process JavaScript event-handler attributes of a MARQUEE element within a sandboxed IFRAME element that lacks the sandbox="allow-scripts" attribute value, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via a crafted web site.
- Published
- Aug 4, 2016
- Updated
- Jun 16, 2026
- EPSS
- 1.5% · 73th percentile
- CWE
- CWE-79
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Report tools
Action score
24
Monitor
Low priority for now.
- CVSS
- 24 / 40 · 6.1 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.5%
Affected systems
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- mozilla firefoxup to 47.0.1 inclusive
- mozilla firefox45.1.0
- mozilla firefox45.1.1
- mozilla firefox45.2.0
- mozilla firefox45.3.0
- oracle linux5.0
- oracle linux6
- oracle linux7
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | firefox-esr | before 45.3.0esr-1 | 45.3.0esr-1 |
| Debian:7 | firefox-esr | before 45.3.0esr-1~deb7u1 | 45.3.0esr-1~deb7u1 |
| Debian:8 | firefox-esr | before 45.3.0esr-1~deb8u1 | 45.3.0esr-1~deb8u1 |
| Red Hat:enterprise_linux:5::client | firefox | before 0:45.3.0-1.el5_11 | 0:45.3.0-1.el5_11 |
| Red Hat:enterprise_linux:5::client | firefox-debuginfo | before 0:45.3.0-1.el5_11 | 0:45.3.0-1.el5_11 |
| Red Hat:enterprise_linux:6::client | firefox | before 0:45.3.0-1.el6_8 | 0:45.3.0-1.el6_8 |
| Red Hat:enterprise_linux:6::client | firefox-debuginfo | before 0:45.3.0-1.el6_8 | 0:45.3.0-1.el6_8 |
| Red Hat:enterprise_linux:7::client | firefox | before 0:45.3.0-1.el7_2 | 0:45.3.0-1.el7_2 |
| Red Hat:enterprise_linux:7::client | firefox-debuginfo | before 0:45.3.0-1.el7_2 | 0:45.3.0-1.el7_2 |
| SUSE:Linux Enterprise Desktop 12 SP1 | MozillaFirefox | before 45.3.0esr-78.1 | 45.3.0esr-78.1 |
| SUSE:Linux Enterprise Server 11 SP2-LTSS | firefox-fontconfig | before 2.11.0-4.2 | 2.11.0-4.2 |
| SUSE:Linux Enterprise Server 11 SP2-LTSS | mozilla-nspr | before 4.12-25.2 | 4.12-25.2 |
| SUSE:Linux Enterprise Server 11 SP2-LTSS | mozilla-nss | before 3.21.1-26.2 | 3.21.1-26.2 |
| SUSE:Linux Enterprise Server 11 SP2-LTSS | MozillaFirefox | before 45.3.0esr-48.1 | 45.3.0esr-48.1 |
| SUSE:Linux Enterprise Server 11 SP2-LTSS | MozillaFirefox-branding-SLED | before 45.0-20.38 | 45.0-20.38 |
| SUSE:Linux Enterprise Software Development Kit 11 SP4 | MozillaFirefox | before 45.3.0esr-50.1 | 45.3.0esr-50.1 |
| SUSE:Package Hub 12 | MozillaThunderbird | before 45.3.0-9.1 | 45.3.0-9.1 |
Same product
mozilla: all recordsOther highest-scoring records for the same primary product.
- CVE-2010-3765Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before 3.1.6 and 3.0.x before 3.0.10, and SeaMonkey 2.x befKEV94Now
- CVE-2019-11708Insufficient vetting of parameters passed with the Prompt:Open IPC message between child and parent processes can result in the non-sandboxeKEV87Now
- CVE-2015-4495The PDF reader in Mozilla Firefox before 39.0.3, Firefox ESR 38.x before 38.1.1, and Firefox OS before 2.2 allows remote attackers to bypassKEV86Now
- CVE-2013-1690Mozilla Firefox before 22.0, Firefox ESR 17.x before 17.0.7, Thunderbird before 17.0.7, and Thunderbird ESR 17.x before 17.0.7 do not properKEV86Now
- CVE-2019-17026Incorrect alias information in IonMonkey JIT compiler for setting array elements could lead to a type confusion.KEV79This week
- CVE-2024-9680An attacker was able to achieve code execution in the content process by exploiting a use-after-free in Animation timelines.KEV76This week
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:firefox-esr | 45.3.0esr-1 · Debian:12 | Package registry (OSV) |
| red hat:firefox | 0:45.3.0-1.el5_11 · Red Hat:enterprise_linux:5::client | Package registry (OSV) |
| red hat:firefox-debuginfo | 0:45.3.0-1.el5_11 · Red Hat:enterprise_linux:5::client | Package registry (OSV) |
| suse:firefox-fontconfig | 2.11.0-4.2 · SUSE:Linux Enterprise Server 11 SP2-LTSS | Package registry (OSV) |
| suse:mozilla-nspr | 4.12-25.2 · SUSE:Linux Enterprise Server 11 SP2-LTSS | Package registry (OSV) |
| suse:mozilla-nss | 3.21.1-26.2 · SUSE:Linux Enterprise Server 11 SP2-LTSS | Package registry (OSV) |
| suse:MozillaFirefox | 45.3.0esr-48.1 · SUSE:Linux Enterprise Server 11 SP2-LTSS | Package registry (OSV) |
| suse:MozillaFirefox-branding-SLED | 45.0-20.38 · SUSE:Linux Enterprise Server 11 SP2-LTSS | Package registry (OSV) |
| suse:MozillaThunderbird | 45.3.0-9.1 · SUSE:Package Hub 12 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- A user must open a link or visit a page.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- low · data can be read
- Integrity
- low · data or configuration can be modified
- Availability
- none
Impact can extend beyond the vulnerable component (scope changes).
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality impact
- Low
- Integrity impact
- Low
- Availability impact
- None
Weakness class (CWE)
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
nvd-primary
Root cause
User content is inserted into the page as HTML. The browser interprets the content as code rather than data.
The bug in code
The whole CWE-79 classA representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.
Vulnerable
commentEl.innerHTML = comment.body;Fixed
commentEl.textContent = comment.body;Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- lists.opensuse.org/opensuse-security-announce/2016-08/msg00004.html
- lists.opensuse.org/opensuse-security-announce/2016-08/msg00029.html
- rhn.redhat.com/errata/RHSA-2016-1551.html
- www.debian.org/security/2016/dsa-3640
- www.mozilla.org/security/announce/2016/mfsa2016-76.html
- www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- www.securityfocus.com/bid/92258
- www.securitytracker.com/id/1036508
- www.ubuntu.com/usn/USN-3044-1
- bugzilla.mozilla.org/show_bug.cgi?id=1277475
- security.gentoo.org/glsa/201701-15
Vendor advisories and official records. Exploit/PoC links are deliberately left out.