Freebsd: >> Freebsd >> 4.5 Security Vulnerabilities
The SYN cache (syncache) and SYN cookie (syncookie) mechanism in FreeBSD 4.5 and earlier allows remote attackers to cause a denial of service (crash) (1) via a SYN packet that is accepted using syncookies that causes a null pointer to be referenced for the socket's TCP options, or (2) by killing and restarting a process that listens on the same socket, which does not properly clear the old inpcb pointer on restart.
CVSS Score
5.0
EPSS Score
0.011
Published
2002-08-12
Kerberos 5 su (k5su) in FreeBSD 4.5 and earlier does not verify that a user is a member of the wheel group before granting superuser privileges, which could allow unauthorized users to execute commands as root.
CVSS Score
7.2
EPSS Score
0.001
Published
2002-08-12
The accept_filter mechanism in FreeBSD 4 through 4.5 does not properly remove entries from the incomplete listen queue when adding a syncache, which allows remote attackers to cause a denial of service (network service availability) via a large number of connection attempts, which fills the queue.
CVSS Score
5.0
EPSS Score
0.009
Published
2002-08-12
The rc system startup script for FreeBSD 4 through 4.5 allows local users to delete arbitrary files via a symlink attack on X Windows lock files.
CVSS Score
2.1
EPSS Score
0.001
Published
2002-08-12
The kqueue mechanism in FreeBSD 4.3 through 4.6 STABLE allows local users to cause a denial of service (kernel panic) via a pipe call in which one end is terminated and an EVFILT_WRITE filter is registered for the other end.
CVSS Score
2.1
EPSS Score
0.001
Published
2002-08-12
FreeBSD 4.5 and earlier, and possibly other BSD-based operating systems, allows local users to write to or read from restricted files by closing the file descriptors 0 (standard input), 1 (standard output), or 2 (standard error), which may then be reused by a called setuid process that intended to perform I/O on normal files.
CVSS Score
7.2
EPSS Score
0.002
Published
2002-07-03
Memory leak in FreeBSD 4.5 and earlier allows remote attackers to cause a denial of service (memory exhaustion) via ICMP echo packets that trigger a bug in ip_output() in which the reference count for a routing table entry is not decremented, which prevents the entry from being removed.
CVSS Score
5.0
EPSS Score
0.011
Published
2002-07-03
The TCP implementation in various BSD operating systems (tcp_input.c) does not properly block connections to broadcast addresses, which could allow remote attackers to bypass intended filters via packets with a unicast link layer address and an IP broadcast address.
CVSS Score
5.0
EPSS Score
0.008
Published
2002-06-25
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