CVE-2017-5378: Hashed codes of JavaScript objects are shared between pages.
Noroxi assessment
Priority: Monitor (action score 31/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 3.2% (FIRST EPSS); higher than 88.6% of all records.
- Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: firefox-esr (Alpine:v3.5) 45.7.0-r0; firefox-esr (Debian:12) 45.7.0esr-1; firefox-esr (Debian:7) 45.7.0esr-1~deb7u1.
Low priority for now. Upgrade to firefox-esr (Alpine:v3.5) 45.7.0-r0; firefox-esr (Debian:12) 45.7.0esr-1; firefox-esr (Debian:7) 45.7.0esr-1~deb7u1 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
Hashed codes of JavaScript objects are shared between pages. This allows for pointer leaks because an object's address can be discovered through hash codes, and also allows for data leakage of an object's content using these hash codes. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.
- Published
- Jun 11, 2018
- Updated
- Jun 16, 2026
- EPSS
- 3.2% · 88th percentile
- CWE
- CWE-200
Report tools
Action score
31
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 3.2%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
Is your version affected? Check itNoroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
| redhat | enterprise linux | cpe:2.3:o:redhat:enterprise_linux |
| redhat | enterprise linux desktop | cpe:2.3:o:redhat:enterprise_linux_desktop |
| redhat | enterprise linux server | cpe:2.3:o:redhat:enterprise_linux_server |
| redhat | enterprise linux server aus | cpe:2.3:o:redhat:enterprise_linux_server_aus |
| redhat | enterprise linux server eus | cpe:2.3:o:redhat:enterprise_linux_server_eus |
| redhat | enterprise linux workstation | cpe:2.3:o:redhat:enterprise_linux_workstation |
| mozilla | thunderbird | cpe:2.3:a:mozilla:thunderbird |
| mozilla | firefox | cpe:2.3:a:mozilla:firefox |
Versions reported by the vendor
Affected version ranges reported by the assigning authority (mozilla). Independent of NVD's CPE analysis and usually ahead of it.
Mozilla Firefox
- unspecified and later · before 51affected
Mozilla Firefox ESR
- unspecified and later · before 45.7affected
Mozilla Thunderbird
- unspecified and later · before 45.7affected
Affected versions · NVD (20)
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux8.0
- mozilla firefoxbefore 45.7.0
- mozilla firefoxbefore 51.0
- mozilla thunderbirdbefore 45.7.0
- redhat enterprise linux5.0
- redhat enterprise linux6.0
- redhat enterprise linux7.0
- redhat enterprise linux desktop5.0
- redhat enterprise linux desktop6.0
- redhat enterprise linux desktop7.0
- redhat enterprise linux server5.0
- redhat enterprise linux server6.0
- redhat enterprise linux server7.0
- redhat enterprise linux server aus7.3
- redhat enterprise linux server aus7.4
- redhat enterprise linux server eus7.3
- redhat enterprise linux server eus7.4
- redhat enterprise linux server eus7.5
- redhat enterprise linux workstation5.0
- redhat enterprise linux workstation6.0
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Alpine:v3.5 | firefox-esr | before 45.7.0-r0 | 45.7.0-r0 |
| Debian:12 | firefox-esr | before 45.7.0esr-1 | 45.7.0esr-1 |
| Debian:7 | firefox-esr | before 45.7.0esr-1~deb7u1 | 45.7.0esr-1~deb7u1 |
| Debian:7 | icedove | before 1:45.8.0-3~deb7u1 | 1:45.8.0-3~deb7u1 |
| Debian:8 | firefox-esr | before 45.7.0esr-1~deb8u1 | 45.7.0esr-1~deb8u1 |
| Debian:8 | icedove | before 1:45.8.0-3~deb8u1 | 1:45.8.0-3~deb8u1 |
| Red Hat:enterprise_linux:5::client | firefox | before 0:45.7.0-2.el5_11 | 0:45.7.0-2.el5_11 |
| Red Hat:enterprise_linux:5::client | firefox-debuginfo | before 0:45.7.0-2.el5_11 | 0:45.7.0-2.el5_11 |
| Red Hat:enterprise_linux:5::client | thunderbird | before 0:45.7.0-1.el5_11 | 0:45.7.0-1.el5_11 |
| Red Hat:enterprise_linux:5::client | thunderbird-debuginfo | before 0:45.7.0-1.el5_11 | 0:45.7.0-1.el5_11 |
| Red Hat:enterprise_linux:6::client | firefox | before 0:45.7.0-2.el6_8 | 0:45.7.0-2.el6_8 |
| Red Hat:enterprise_linux:6::client | firefox-debuginfo | before 0:45.7.0-2.el6_8 | 0:45.7.0-2.el6_8 |
| Red Hat:enterprise_linux:6::client | thunderbird | before 0:45.7.0-1.el6_8 | 0:45.7.0-1.el6_8 |
| Red Hat:enterprise_linux:6::client | thunderbird-debuginfo | before 0:45.7.0-1.el6_8 | 0:45.7.0-1.el6_8 |
| Red Hat:enterprise_linux:7::client | firefox | before 0:45.7.0-2.el7_3 | 0:45.7.0-2.el7_3 |
| Red Hat:enterprise_linux:7::client | firefox-debuginfo | before 0:45.7.0-2.el7_3 | 0:45.7.0-2.el7_3 |
| Red Hat:enterprise_linux:7::client | thunderbird | before 0:45.7.0-1.el7_3 | 0:45.7.0-1.el7_3 |
| Red Hat:enterprise_linux:7::client | thunderbird-debuginfo | before 0:45.7.0-1.el7_3 | 0:45.7.0-1.el7_3 |
| SUSE:Linux Enterprise Desktop 12 SP1 | MozillaFirefox | before 45.7.0esr-99.1 | 45.7.0esr-99.1 |
| SUSE:Linux Enterprise Software Development Kit 11 SP4 | MozillaFirefox | before 45.7.0esr-65.2 | 45.7.0esr-65.2 |
| SUSE:Package Hub 12 | MozillaThunderbird | before 45.7.0-23.1 | 45.7.0-23.1 |
Same product
debian: all recordsOther highest-scoring records for the same primary product.
- CVE-2016-9079A use-after-free vulnerability in SVG Animation has been discovered.KEV86Now
- CVE-2024-44308The issue was addressed with improved checks.KEV68This week
- CVE-2021-25216A second vulnerability in BIND's GSSAPI security policy negotiation can be targeted by a buffer overflow attack64This week
Published before and after this one in the same product
- ← EarlierCVE-2016-9900Jun 11, 2018 · External resources that should be blocked when loaded by SVG images can bypass security restrictions through the use of "data:" URLs.33Monitor
- ← EarlierCVE-2017-5376Jun 11, 2018 · Use-after-free while manipulating XSL in XSLT documents.40Plan
- Later →CVE-2017-5380Jun 11, 2018 · A potential use-after-free found through fuzzing during DOM manipulation of SVG content.40Plan
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 |
|---|---|---|
| alpine:firefox-esr | 45.7.0-r0 · Alpine:v3.5 | Package registry (OSV) |
| debian:firefox-esr | 45.7.0esr-1 · Debian:12 | Package registry (OSV) |
| debian:icedove | 1:45.8.0-3~deb7u1 · Debian:7 | Package registry (OSV) |
| red hat:firefox | 0:45.7.0-2.el5_11 · Red Hat:enterprise_linux:5::client | Package registry (OSV) |
| red hat:firefox-debuginfo | 0:45.7.0-2.el5_11 · Red Hat:enterprise_linux:5::client | Package registry (OSV) |
| red hat:thunderbird | 0:45.7.0-1.el5_11 · Red Hat:enterprise_linux:5::client | Package registry (OSV) |
| red hat:thunderbird-debuginfo | 0:45.7.0-1.el5_11 · Red Hat:enterprise_linux:5::client | Package registry (OSV) |
| suse:MozillaFirefox | 45.7.0esr-65.2 · SUSE:Linux Enterprise Software Development Kit 11 SP4 | Package registry (OSV) |
| suse:MozillaThunderbird | 45.7.0-23.1 · 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.
Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-200 · Exposure of Sensitive Information to an Unauthorized ActorCVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
nvd-primary
Root cause
The extension requests broader permissions than its function needs and sends the data it collects out for purposes beyond its stated function.
The bug in code
The whole CWE-200 classA representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.
Vulnerable
{
"permissions": ["tabs", "<all_urls>"],
"background": { "service_worker": "analytics.js" }
}Fixed
{
"permissions": ["activeTab"],
"host_permissions": ["https://yildiz.example/*"]
}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)
- ExcavationCAPEC-116likelihood: High · Medium
- Subverting Environment Variable ValuesCAPEC-13likelihood: High · Very High
- FootprintingCAPEC-169likelihood: High · Very Low
- Exploiting Trust in ClientCAPEC-22likelihood: High · High
- FingerprintingCAPEC-224likelihood: High · Very Low
- ICMP Echo Request PingCAPEC-285likelihood: Medium · Low
- TCP SYN ScanCAPEC-287Low
- Enumerate Mail Exchange (MX) RecordsCAPEC-290Low
ATT&CK techniques
- System Service DiscoveryT1007
- System Network Configuration DiscoveryT1016
- Remote System DiscoveryT1018
- System Owner/User DiscoveryT1033
- Masquerading: Match Legitimate Name or LocationT1036.005
- Network Service ScanningT1046
- System Network Connections DiscoveryT1049
- Process DiscoveryT1057
- Permission Groups DiscoveryT1069
- System Information DiscoveryT1082
- File and Directory DiscoveryT1083
- Account DiscoveryT1087
- Multi-Factor Authentication InterceptionT1111
- Peripheral Device DiscoveryT1120
- System Time DiscoveryT1124
- Access Token Manipulation:Token Impersonation/TheftT1134.001
Change log (1)
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (11 more)Show less
- rhn.redhat.com/errata/RHSA-2017-0238.html
- www.securityfocus.com/bid/95769
- www.securitytracker.com/id/1037693
- bugzilla.mozilla.org/show_bug.cgi?id=1330769
- security.gentoo.org/glsa/201702-13
- security.gentoo.org/glsa/201702-22
- www.debian.org/security/2017/dsa-3771
- www.debian.org/security/2017/dsa-3832
- www.mozilla.org/security/advisories/mfsa2017-01/
- www.mozilla.org/security/advisories/mfsa2017-02/
- www.mozilla.org/security/advisories/mfsa2017-03/
Vendor advisories and official records. Exploit/PoC links are deliberately left out.