Visual truncation vulnerability in netwerk/dns/src/nsIDNService.cpp in Mozilla Firefox before 3.0.11 and SeaMonkey before 1.1.17 allows…

Description

Visual truncation vulnerability in netwerk/dns/src/nsIDNService.cpp in Mozilla Firefox before 3.0.11 and SeaMonkey before 1.1.17 allows remote attackers to spoof the location bar via an IDN with invalid Unicode characters that are displayed as whitespace, as demonstrated by the \u115A through \u115E characters.

Scores

EPSS (exploitation in 30 days)

3.2% · top 12% of all CVEs (5 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.

Weakness

• n/a
• CWE-20 (opens in a new tab)All about CWE-20 and its CVEs

Affected products

• n/a

  • affected n/a

References (19)

• ADV-2009-1572 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 35388 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• oval:org.mitre.oval:def:10436 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• 35326 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• http://www.mozilla.org/security/announce/2009/mfsa2009-25.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• FEDORA-2009-6411 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
• 35431 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 35331 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 35468 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 35439 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• FEDORA-2009-6366 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
• 35415 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• RHSA-2009:1095 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• SSA:2009-167-01 (opens in a new tab)vendor-advisoryx_refsource_SLACKWAREx_transferred
• 55162 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
• https://bugzilla.mozilla.org/show_bug.cgi?id=479413 (opens in a new tab)x_refsource_CONFIRMx_transferred
• DSA-1820 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• 264308 (opens in a new tab)vendor-advisoryx_refsource_SUNALERTx_transferred
• https://bugzilla.redhat.com/show_bug.cgi?id=503573 (opens in a new tab)x_refsource_CONFIRMx_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

[![CVE-2009-1834](https://trackcve.app/badge/CVE-2009-1834.svg)](https://trackcve.app/cve/CVE-2009-1834)

Record last updated 7 Aug 2024, 05:27 UTC.