Tor Browser before 7.0.9 on macOS and Linux allows remote attackers to bypass the intended anonymity feature and discover a client IP addres
Tor Browser before 7.0.9 on macOS and Linux allows remote attackers to bypass the intended anonymity feature and discover a client IP address via vectors involving a crafted web site that leverages file:// mishandling in Firefox, aka TorMoil. NOTE: Tails is unaffected.
- Published
- Nov 4, 2017
- Updated
- Jun 16, 2026
- EPSS
- 3.7% · 89th percentile
- CWE
- CWE-200
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Report tools
Action score
27
Monitor
Low priority for now.
- CVSS
- 26 / 40 · 6.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 3.7%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
| torproject | tor | cpe:2.3:a:torproject:tor |
| apple | macos | cpe:2.3:o:apple:macos |
| redhat | enterprise linux desktop | cpe:2.3:o:redhat:enterprise_linux_desktop |
| redhat | enterprise linux eus | cpe:2.3:o:redhat:enterprise_linux_eus |
| 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 tus | cpe:2.3:o:redhat:enterprise_linux_server_tus |
| redhat | enterprise linux workstation | cpe:2.3:o:redhat:enterprise_linux_workstation |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux8.0
- debian debian linux9.0
- redhat enterprise linux desktop6.0
- redhat enterprise linux desktop7.0
- redhat enterprise linux eus7.5
- redhat enterprise linux eus7.6
- redhat enterprise linux eus7.7
- redhat enterprise linux server6.0
- redhat enterprise linux server7.0
- redhat enterprise linux server aus7.6
- redhat enterprise linux server aus7.7
- redhat enterprise linux server tus7.6
- redhat enterprise linux server tus7.7
- redhat enterprise linux workstation6.0
- redhat enterprise linux workstation7.0
- torproject torbefore 7.0.9
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 60.2.0esr-1 | 60.2.0esr-1 |
| Debian:12 | thunderbird | before 1:60.2.1-1 | 1:60.2.1-1 |
| Debian:8 | thunderbird | before 1:60.3.0-1~deb8u1 | 1:60.3.0-1~deb8u1 |
| Debian:9 | thunderbird | before 1:60.2.1-2~deb9u1 | 1:60.2.1-2~deb9u1 |
| Red Hat:enterprise_linux:6::client | firefox | before 0:60.2.0-1.el6 | 0:60.2.0-1.el6 |
| Red Hat:enterprise_linux:6::client | firefox-debuginfo | before 0:60.2.0-1.el6 | 0:60.2.0-1.el6 |
| Red Hat:enterprise_linux:6::client | thunderbird | before 0:60.2.1-5.el6 | 0:60.2.1-5.el6 |
| Red Hat:enterprise_linux:6::client | thunderbird-debuginfo | before 0:60.2.1-5.el6 | 0:60.2.1-5.el6 |
| Red Hat:enterprise_linux:7::client | firefox | before 0:60.2.0-1.el7_5 | 0:60.2.0-1.el7_5 |
| Red Hat:enterprise_linux:7::client | firefox-debuginfo | before 0:60.2.0-1.el7_5 | 0:60.2.0-1.el7_5 |
| Red Hat:enterprise_linux:7::client | thunderbird | before 0:60.2.1-4.el7_5 | 0:60.2.1-4.el7_5 |
| Red Hat:enterprise_linux:7::client | thunderbird-debuginfo | before 0:60.2.1-4.el7_5 | 0:60.2.1-4.el7_5 |
| SUSE:Linux Enterprise Module for Desktop Applications 15 | MozillaFirefox | before 60.2.0-3.10.1 | 60.2.0-3.10.1 |
| SUSE:Linux Enterprise Module for Desktop Applications 15 | MozillaFirefox-branding-SLE | before 60-4.3.1 | 60-4.3.1 |
| SUSE:Linux Enterprise Workstation Extension 15 | MozillaThunderbird | before 60.2.1-3.13.1 | 60.2.1-3.13.1 |
| SUSE:OpenStack Cloud 7 | apache2-mod_nss | before 1.0.14-19.6.3 | 1.0.14-19.6.3 |
| SUSE:OpenStack Cloud 7 | mozilla-nspr | before 4.19-19.3.1 | 4.19-19.3.1 |
| SUSE:OpenStack Cloud 7 | mozilla-nss | before 3.36.4-58.15.3 | 3.36.4-58.15.3 |
| SUSE:OpenStack Cloud 7 | MozillaFirefox | before 60.2.2esr-109.46.1 | 60.2.2esr-109.46.1 |
| SUSE:OpenStack Cloud 7 | MozillaFirefox-branding-SLE | before 60-32.3.1 | 60-32.3.1 |
| SUSE:Package Hub 12 | MozillaThunderbird | before 60.3.0-74.2 | 60.3.0-74.2 |
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV89Now
- CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV85Now
- CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV83Now
- CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV77This week
- CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV77This week
- CVE-2013-2094The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows loKEV77This 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 | 60.2.0esr-1 · Debian:12 | Package registry (OSV) |
| debian:thunderbird | 1:60.2.1-1 · Debian:12 | Package registry (OSV) |
| red hat:firefox | 0:60.2.0-1.el7_5 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:firefox-debuginfo | 0:60.2.0-1.el7_5 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:thunderbird | 0:60.2.1-5.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:thunderbird-debuginfo | 0:60.2.1-5.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| suse:apache2-mod_nss | 1.0.14-19.6.3 · SUSE:OpenStack Cloud 7 | Package registry (OSV) |
| suse:mozilla-nspr | 4.19-19.3.1 · SUSE:OpenStack Cloud 7 | Package registry (OSV) |
| suse:mozilla-nss | 3.36.4-58.15.3 · SUSE:OpenStack Cloud 7 | Package registry (OSV) |
| suse:MozillaFirefox | 60.2.0-3.10.1 · SUSE:Linux Enterprise Module for Desktop Applications 15 | Package registry (OSV) |
| suse:MozillaFirefox-branding-SLE | 60-4.3.1 · SUSE:Linux Enterprise Module for Desktop Applications 15 | Package registry (OSV) |
| suse:MozillaThunderbird | 60.2.1-3.13.1 · SUSE:Linux Enterprise Workstation Extension 15 | Package registry (OSV) |
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Proof-of-concept repository on GitHub ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Proof-of-concept repository on GitHub | stars:0 | 2021-03-29 |
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.
- Published
- First PoC+1240 d
- TodaySep 30, 2026+3252 d
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
The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.
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
- high · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- 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:3.1/AV:N/AC:L/PR:N/UI:R/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
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
- www.securityfocus.com/bid/101665
- www.securitytracker.com/id/1041610
- access.redhat.com/errata/RHSA-2018:2692
- access.redhat.com/errata/RHSA-2018:2693
- access.redhat.com/errata/RHSA-2018:3403
- access.redhat.com/errata/RHSA-2018:3458
- blog.torproject.org/tor-browser-709-released
- lists.debian.org/debian-lts-announce/2018/11/msg00011.html
- security.gentoo.org/glsa/201810-01
- security.gentoo.org/glsa/201811-13
- trac.torproject.org/projects/tor/ticket/24052
- www.bleepingcomputer.com/news/security/tormoil-vulnerability-leaks-real-ip-address-from-tor-browser-users/
- www.debian.org/security/2018/dsa-4327
- www.wearesegment.com/research/tormoil-torbrowser-unspecified-critical-security-vulnerability/
Vendor advisories and official records. Exploit/PoC links are deliberately left out.