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CVE-2017-5383
URLs containing certain unicode glyphs for alternative hyphens and quotes do not properly trigger punycode display, allowing for domain…
Medium5.3EPSS 2.4%
- Published
- Updated
- Reserved
- Assigned by
- mozilla
Description
URLs containing certain unicode glyphs for alternative hyphens and quotes do not properly trigger punycode display, allowing for domain name spoofing attacks in the location bar. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Medium5.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
- EPSS (exploitation in 30 days)
- 2.4% · top 16% of all CVEs (4 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Weakness
- Location bar spoofing with unicode characters
- CWE-20 (opens in a new tab)All about CWE-20 and its CVEs
Affected products
- affected unspecified – < 45.7
- affected unspecified – < 45.7
- affected unspecified – < 51
References (13)
- https://www.mozilla.org/security/advisories/mfsa2017-03/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://www.mozilla.org/security/advisories/mfsa2017-02/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- GLSA-201702-22 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- https://bugzilla.mozilla.org/show_bug.cgi?id=1323338 (opens in a new tab)x_refsource_CONFIRMx_transferred
- DSA-3832 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- GLSA-201702-13 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- DSA-3771 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 1037693 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- https://www.mozilla.org/security/advisories/mfsa2017-01/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2017:0190 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2017:0238 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://bugzilla.mozilla.org/show_bug.cgi?id=1324716 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 95769 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2017-5383)Record last updated .