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Unscored Public exploit CVE-2009-1834 EUVD-2009-1829GHSA-m6fm-xwqg-f4r6

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

Published Jun 12, 2009 · Updated Aug 7, 2024 · Assigned by redhat

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.

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗
ReleasePackageFixed inAdvisory
Debian 5.0 xulrunner 1.9.0.11-0lenny1 DSA-1820-1

Red Hat

Security tracker ↗
ReleasePackageFixed inAdvisory
RHEL 5 firefox 3.0.11-2.el5_3 RHSA-2009:1095
RHEL 5 xulrunner +2 1.9.0.11-3.el5_3 RHSA-2009:1095
RHEL 4 firefox 3.0.11-4.el4 RHSA-2009:1095

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Exploit-DB 1

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 2

References