Mozilla: Response header name interning leaks across origins (MFSA 2017-18)
Published Jun 11, 2018
7.5
HIGHCVSS 3.0
EPSS 0.80%
Description
Response header name interning does not have same-origin protections and these headers are stored in a global registry. This allows stored header names to be available cross-origin. This vulnerability affects Firefox < 55.
Affected products
-
- Version unspecifiedStatusaffectedConstraints<55
- Version
No data.
Red Hat Enterprise Linux 6
firefox
Not affected
Red Hat Enterprise Linux 7
firefox
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | firefox | Not affected | n/a |
| Red Hat Enterprise Linux 7 | firefox | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
AV:N/AC:L/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.80% (0.00799) | 54.95th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.80% (0.00799) | 55.00th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.17% (0.00170) | 54.41th | v3 (v2023.03.01) |
| Nov 2, 2023 | 0.17% (0.00170) | 54.00th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.20% (0.00201) | 57.35th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.24% (0.00240) | 60.20th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00954) | 16.28th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.83% (0.00833) | 24.58th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.83% (0.00833) | 0.00th | v1 |
References (8)
- http://www.securitytracker.com/id/1039124 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2017-7797 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1334776 x_refsource_CONFIRMExploitIssue TrackingPatch
- https://bugzilla.redhat.com/show_bug.cgi?id=1479212 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2017-7797
- https://www.cve.org/CVERecord?id=CVE-2017-7797
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-18/#CVE-2017-7797
- https://www.mozilla.org/security/advisories/mfsa2017-18/ x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securitytracker.com/id/1039124 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2017-7797 | Vendor Advisory | |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1334776 | x_refsource_CONFIRMExploitIssue TrackingPatch | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1479212 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-7797 | ||
| https://www.cve.org/CVERecord?id=CVE-2017-7797 | ||
| https://www.mozilla.org/en-US/security/advisories/mfsa2017-18/#CVE-2017-7797 | ||
| https://www.mozilla.org/security/advisories/mfsa2017-18/ | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.