MEDIUM
Firefox URL spoofing with invisible control characters
Published Mar 5, 2009
5.8
MEDIUMCVSS 2.0
EPSS 1.50%
Description
Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey before 1.1.15 decode invisible characters when they are displayed in the location bar, which causes an incorrect address to be displayed and makes it easier for remote attackers to spoof URLs and conduct phishing attacks.
Affected products
No data.
OR
- ≤ 3.0.6
- 1.0
- 1.0.1
- 1.0.2
- 1.0.3
- 1.0.4
- 1.0.5
- 1.0.6
- 1.0.7
- 1.0.8
- 1.5
- 1.5.0.1
- 1.5.0.2
- 1.5.0.3
- 1.5.0.4
- 1.5.0.5
- 1.5.0.6
- 1.5.0.7
- 1.5.0.8
- 1.5.0.9
- 1.5.0.10
- 1.5.0.11
- 1.5.0.12
- 2.0
- 2.0.0.1
- 2.0.0.2
- 2.0.0.3
- 2.0.0.4
- 2.0.0.5
- 2.0.0.6
- 2.0.0.7
- 2.0.0.8
- 2.0.0.9
- 2.0.0.10
- 2.0.0.11
- 2.0.0.12
- 2.0.0.13
- 2.0.0.14
- 2.0.0.15
- 2.0.0.16
- 2.0.0.17
- 2.0.0.18
- 2.0.0.19
- 2.0.0.20
- 3.0
- 3.0.1
- 3.0.2
- 3.0.3
- 3.0.4
- 3.0.5
- ≤ 1.1.14
- 1.0
- 1.0.1
- 1.0.2
- 1.0.3
- 1.0.5
- 1.0.6
- 1.0.7
- 1.0.8
- 1.0.9
- 1.1
- 1.1
- 1.1
- 1.1.1
- 1.1.2
- 1.1.3
- 1.1.4
- 1.1.5
- 1.1.6
- 1.1.7
- 1.1.8
- 1.1.9
- 1.1.10
- 1.1.11
- 1.1.12
- 1.1.13
- ≤ 2.0.0.20
- 2.0.0.0
- 2.0.0.4
- 2.0.0.5
- 2.0.0.6
- 2.0.0.9
- 2.0.0.12
- 2.0.0.14
- 2.0.0.16
- 2.0.0.17
- 2.0.0.18
- 2.0.0.19
No data.
Red Hat Enterprise Linux 4
firefox-0:3.0.7-1.el4
Fixed · RHSA-2009:0315
Red Hat Enterprise Linux 5
firefox-0:3.0.7-1.el5
Fixed · RHSA-2009:0315
Red Hat Enterprise Linux 5
xulrunner-0:1.9.0.7-1.el5
Fixed · RHSA-2009:0315
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | firefox-0:3.0.7-1.el4 | Fixed | RHSA-2009:0315 |
| Red Hat Enterprise Linux 5 | firefox-0:3.0.7-1.el5 | Fixed | RHSA-2009:0315 |
| Red Hat Enterprise Linux 5 | xulrunner-0:1.9.0.7-1.el5 | Fixed | RHSA-2009:0315 |
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.
No CVSS v3.0 score for this CVE.
5.8 MEDIUM NVD
AV:N/AC:M/Au:N/C:N/I:P/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.50% 0.01497
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.01497
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 | 1.50% (0.01497) | 73.27th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.50% (0.01497) | 70.77th | v5 (v2026.06.15) |
| Mar 30, 2025 | 2.02% (0.02024) | 82.17th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.74% (0.03737) | 79.76th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.58% (0.01585) | 80.35th | v4 (v2025.03.14) |
| Dec 17, 2024 | 1.74% (0.01742) | 87.60th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.61% (0.00612) | 78.01th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.61% (0.00612) | 75.38th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.93% (0.03932) | 85.88th | v2 (v2022.01.01) |
| Feb 13, 2023 | 3.93% (0.03932) | 85.48th | v2 (v2022.01.01) |
| Feb 3, 2023 | 2.69% (0.02686) | 82.44th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.93% (0.03932) | 84.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.93% (0.03932) | 67.70th | v2 (v2022.01.01) |
Weaknesses (1)
References (23)
- http://lists.opensuse.org/opensuse-security-announce/2009-03/msg00002.html vendor-advisoryx_refsource_SUSE
- http://secunia.com/advisories/34140 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/34145 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/34272 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://securitytracker.com/alerts/2009/Mar/1021799.html vdb-entryx_refsource_SECTRACK
- http://support.avaya.com/elmodocs2/security/ASA-2009-069.htm x_refsource_CONFIRM
- http://support.avaya.com/japple/css/japple?temp.documentID=366362&temp.productID=154235&temp.releaseID=361845&temp.bucketID=126655&PAGE=Document x_refsource_CONFIRM
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:075 vendor-advisoryx_refsource_MANDRIVA
- http://www.mozilla.org/security/announce/2009/mfsa2009-11.html x_refsource_CONFIRMVendor Advisory
- http://www.redhat.com/support/errata/RHSA-2009-0315.html vendor-advisoryx_refsource_REDHAT
- http://www.securityfocus.com/bid/33990 vdb-entryx_refsource_BID
- http://www.vupen.com/english/advisories/2009/0632 vdb-entryx_refsource_VUPENVendor Advisory
- https://access.redhat.com/security/cve/CVE-2009-0777 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=452979 x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=488292 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/49087 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2009-0777
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11222 vdb-entrysignaturex_refsource_OVAL
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6039 vdb-entrysignaturex_refsource_OVAL
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6157 vdb-entrysignaturex_refsource_OVAL
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6229 vdb-entrysignaturex_refsource_OVAL
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7435 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2009-0777
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Mar 5, 2009
Updated Aug 7, 2024
Reserved Mar 3, 2009
Link CVE-2009-0777
CISA Vulnrichment
Updated n/a