CVE-2006-4925

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 15.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2006-09-29 · updated 2026-06-16

Description

packet.c in ssh in OpenSSH allows remote attackers to cause a denial of service (crash) by sending an invalid protocol sequence with USERAUTH_SUCCESS before NEWKEYS, which causes newkeys[mode] to be NULL.

Affected products

OpenSSH: 4.5

References

http://bugs.gentoo.org/show_bug.cgi?id=148228
http://secunia.com/advisories/22245
http://secunia.com/advisories/22298
http://secunia.com/advisories/22495
http://secunia.com/advisories/23038
http://www.mandriva.com/security/advisories?name=MDKSA-2006:179
http://www.novell.com/linux/security/advisories/2006_24_sr.html
http://www.novell.com/linux/security/advisories/2006_62_openssh.html
http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/packet.c.diff?r1=1.144&r2=1.145&f=h
http://www.openpkg.org/security/advisories/OpenPKG-SA-2006.022-openssh.html
http://www.securityfocus.com/archive/1/447153/100/0/threaded
http://www.securityfocus.com/archive/1/447861/100/200/threaded

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