CVE-2007-1562

Severity: medium (CVSS 6.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 14.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2007-03-21 · updated 2026-06-16
Weakness: CWE-200

Description

The FTP protocol implementation in Mozilla Firefox before 1.5.0.11 and 2.x before 2.0.0.3 allows remote attackers to force the client to connect to other servers, perform a proxied port scan, or obtain sensitive information by specifying an alternate server address in an FTP PASV response.

Affected products

Canonical Ubuntu Linux: 5.10, 6.06, 6.10
Mozilla Firefox: from 1.5 before 1.5.0.11; from 2.0 before 2.0.0.3 — fixed in 1.5.0.11, 2.0.0.3

How to fix

Upgrade to a fixed version: Mozilla Firefox 1.5.0.11, 2.0.0.3. Check the vendor advisory for mitigations.

References

http://bindshell.net/papers/ftppasv/ftp-client-pasv-manipulation.pdf
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c00771742
http://secunia.com/advisories/25476
http://secunia.com/advisories/25490
http://secunia.com/advisories/25858
http://www.mozilla.org/security/announce/2007/mfsa2007-11.html
http://www.novell.com/linux/security/advisories/2007_36_mozilla.html
http://www.openwall.com/lists/oss-security/2020/12/09/1
http://www.redhat.com/support/errata/RHSA-2007-0400.html
http://www.redhat.com/support/errata/RHSA-2007-0402.html
http://www.securityfocus.com/archive/1/463501/100/0/threaded
http://www.securityfocus.com/archive/1/470172/100/200/threaded

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