HIGH
python-tornado: XSRF cookie allows side-channel attack against TLS (BREACH)
Published Jan 24, 2020
7.1
HIGHCVSS 4.0
EPSS 2.51%
Description
Tornado before 3.2.2 sends arbitrary responses that contain a fixed CSRF token and may be sent with HTTP compression, which makes it easier for remote attackers to conduct a BREACH attack and determine this token via a series of crafted requests.
Affected products
No data.
- < 3.2.2
No data.
Red Hat Enterprise Linux 7
python-tornado
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | python-tornado | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
7.1 HIGH GHSA
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Attack Vector Network
Attack Complexity Low
Attack Requirements None
Privileges Required None
User Interaction Passive
Vulnerable System Confidentiality High
Vulnerable System Integrity None
Vulnerable System Availability None
Subsequent System Confidentiality None
Subsequent System Integrity None
Subsequent System Availability None
6.5 MEDIUM NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact High
Integrity Impact None
Availability Impact None
No CVSS v3.0 score for this CVE.
4.3 MEDIUM NVD
AV:N/AC:M/Au:N/C:P/I:N/A:N
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.51% 0.02510
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02510
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.51% (0.02510) | 84.20th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.49% (0.02489) | 82.50th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.90% (0.00904) | 73.61th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.36% (0.02359) | 74.89th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.78% (0.00779) | 71.97th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.48% (0.00485) | 76.78th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.48% (0.00485) | 75.26th | v3 (v2023.03.01) |
| May 8, 2023 | 0.48% (0.00485) | 72.37th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.28% (0.00283) | 63.57th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
References (10)
- http://openwall.com/lists/oss-security/2015/05/19/4 x_refsource_MISCMailing ListPatchThird Party Advisory
- http://www.tornadoweb.org/en/stable/releases/v3.2.2.html x_refsource_MISCRelease NotesVendor Advisory
- https://access.redhat.com/security/cve/CVE-2014-9720 Vendor Advisory
- https://bugzilla.novell.com/show_bug.cgi?id=930362 x_refsource_MISCIssue TrackingPatchThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1222816 x_refsource_MISCIssue TrackingPatchThird Party Advisory
- https://github.com/advisories/GHSA-8vpw-mgpf-mpvv Advisory
- https://github.com/pypa/advisory-database/tree/main/vulns/tornado/PYSEC-2020-213.yaml
- https://github.com/tornadoweb/tornado/commit/1c36307463b1e8affae100bf9386948e6c1b2308 x_refsource_MISCPatch
- https://nvd.nist.gov/vuln/detail/CVE-2014-9720
- https://www.cve.org/CVERecord?id=CVE-2014-9720
| Link | Providers | Tags |
|---|---|---|
| http://openwall.com/lists/oss-security/2015/05/19/4 | x_refsource_MISCMailing ListPatchThird Party Advisory | |
| http://www.tornadoweb.org/en/stable/releases/v3.2.2.html | x_refsource_MISCRelease NotesVendor Advisory | |
| https://access.redhat.com/security/cve/CVE-2014-9720 | Vendor Advisory | |
| https://bugzilla.novell.com/show_bug.cgi?id=930362 | x_refsource_MISCIssue TrackingPatchThird Party Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1222816 | x_refsource_MISCIssue TrackingPatchThird Party Advisory | |
| https://github.com/advisories/GHSA-8vpw-mgpf-mpvv | Advisory | |
| https://github.com/pypa/advisory-database/tree/main/vulns/tornado/PYSEC-2020-213.yaml | ||
| https://github.com/tornadoweb/tornado/commit/1c36307463b1e8affae100bf9386948e6c1b2308 | x_refsource_MISCPatch | |
| https://nvd.nist.gov/vuln/detail/CVE-2014-9720 | ||
| https://www.cve.org/CVERecord?id=CVE-2014-9720 |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jan 24, 2020
Updated Aug 6, 2024
Reserved May 19, 2015
Link CVE-2014-9720
CISA Vulnrichment
GHSA-8VPW-MGPF-MPVV Updated n/a