CVE-2007-6263

Severity: critical (CVSS 9.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2007-12-06 · updated 2026-06-16
Weakness: CWE-20

Description

The dataconn function in ftpd.c in netkit ftpd (netkit-ftpd) 0.17, when certain modifications to support SSL have been introduced, calls fclose on an uninitialized file stream, which allows remote attackers to cause a denial of service (daemon crash) and possibly have unspecified other impact via some types of FTP over SSL protocol behavior, as demonstrated by breaking a passive FTP DATA connection in a way that triggers an error in the server's SSL_accept function. NOTE: the netkit ftp issue is covered by CVE-2007-5769.

Affected products

Netkit-Ftp Netkit Ftp: 0.17

References

http://bugs.gentoo.org/show_bug.cgi?id=199206
http://marc.info/?l=full-disclosure&m=119704348003382&w=2
http://osvdb.org/41191
http://secunia.com/advisories/28697
http://www.gentoo.org/security/en/glsa/glsa-200801-17.xml
http://www.securityfocus.com/bid/26763
http://bugs.gentoo.org/show_bug.cgi?id=199206
http://marc.info/?l=full-disclosure&m=119704348003382&w=2
http://osvdb.org/41191
http://secunia.com/advisories/28697
http://www.gentoo.org/security/en/glsa/glsa-200801-17.xml
http://www.securityfocus.com/bid/26763

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