For errata on a certain release, click below:
2.0,
2.1,
2.2,
2.3,
2.4,
2.5,
2.6,
2.7,
2.8,
2.9,
3.0,
3.1,
3.3,
3.4,
3.5,
3.6,
3.7,
3.8,
3.9,
4.0,
4.1,
4.2,
4.3,
4.4,
4.5,
4.6,
4.7,
4.8,
4.9,
5.0,
5.1,
5.2,
5.3,
5.4,
5.5,
5.6,
5.7,
5.8,
5.9,
6.0,
6.1,
6.2,
6.3,
6.4,
6.5,
6.6,
6.7,
6.8,
6.9,
7.0,
7.1,
7.2,
7.3,
7.4,
7.5.
Patches for the OpenBSD base system are distributed as unified diffs.
Each patch contains usage instructions.
All the following patches are also available in one
tar.gz file
for convenience.
Patches for supported releases are also incorporated into the
-stable branch.
-
001: SECURITY FIX: October 21, 2002
All architectures
A buffer overflow can occur in the
kadmind(8)
daemon, leading to possible remote crash or exploit.
A source code patch exists which remedies this problem.
-
002: RELIABILITY FIX: November 6, 2002
All architectures
Network
bridges
running
pf
with scrubbing enabled could cause mbuf corruption,
causing the system to crash.
A source code patch exists which remedies this problem.
-
003: SECURITY FIX: November 6, 2002
All architectures
An attacker can bypass the restrictions imposed by sendmail's restricted shell,
smrsh(8),
and execute arbitrary commands with the privileges of his own account.
A source code patch exists which remedies this problem.
-
004: RELIABILITY FIX: November 6, 2002
All architectures
A logic error in the
pool
kernel memory allocator could cause memory corruption in low-memory situations,
causing the system to crash.
A source code patch exists which remedies this problem.
-
005: SECURITY FIX: November 14, 2002
All architectures
A buffer overflow in
named(8)
could allow an attacker to execute code with the privileges of named.
On OpenBSD, named runs as a non-root user in a chrooted environment
which mitigates the effects of this bug.
A source code patch exists which remedies this problem.
-
006: SECURITY FIX: January 20, 2003
All architectures
A double free in
cvs(1)
could allow an attacker to execute code with the privileges of the
user running cvs. This is only an issue when the cvs command is
being run on a user's behalf as a different user. This means that,
in most cases, the issue only exists for cvs configurations that use
the pserver client/server connection method.
A source code patch exists which remedies this problem.
-
007: SECURITY FIX: February 22, 2003
All architectures
In
ssl(8) an information leak can occur via timing by performing a MAC computation
even if incorrect block cipher padding has been found, this is a
countermeasure. Also, check for negative sizes in memory allocation routines.
A
source code patch exists which fixes these two issues.
-
008: SECURITY FIX: February 25, 2003
All architectures
httpd(8) leaks file inode numbers via ETag header as well as child PIDs in multipart MIME boundary generation. This could lead, for example, to NFS exploitation because it uses inode numbers as part of the file handle.
A source code patch exists which fixes these two issues.
-
009: SECURITY FIX: March 3, 2003
All architectures
A buffer overflow in the envelope comments processing in
sendmail(8)
may allow an attacker to gain root privileges.
A source code patch exists which remedies this problem.
-
010: SECURITY FIX: March 5, 2003
All architectures
A fix for an
lprm(1)
bug made in 1996 contains an error that could lead to privilege escalation.
For OpenBSD 3.2 the impact is limited since
lprm(1)
is setuid daemon, not setuid root.
A source code patch exists which remedies this problem.
-
011: SECURITY FIX: March 18, 2003
All architectures
Various SSL and TLS operations in OpenSSL are vulnerable to timing attacks.
A source code patch exists which remedies this problem.
-
012: SECURITY FIX: March 19, 2003
All architectures
OpenSSL is vulnerable to an extension of the "Bleichenbacher" attack designed
by Czech researchers Klima, Pokorny and Rosa.
A source code patch exists which remedies this problem.
-
013: SECURITY FIX: March 24, 2003
All architectures
The cryptographic weaknesses in the Kerberos v4 protocol can be exploited
on Kerberos v5 as well.
A source code patch exists which remedies this problem.
-
014: SECURITY FIX: March 31, 2003
All architectures
A buffer overflow in the address parsing in
sendmail(8)
may allow an attacker to gain root privileges.
A source code patch exists which remedies this problem.
-
015: SECURITY FIX: August 4, 2003
All architectures
An off-by-one error exists in the C library function
realpath(3).
Since this same bug resulted in a root compromise in the wu-ftpd ftp server
it is possible that this bug may allow an attacker to gain escalated privileges
on OpenBSD.
A source code patch exists which remedies this problem.
-
016: SECURITY FIX: August 25, 2003
All architectures
Fix for a potential security issue in
sendmail(8)
with respect to DNS maps. This only affects
sendmail(8)
configurations that use the "enhdnsbl"
feature. The default OpenBSD
sendmail(8)
config does not use this.
A source code patch exists which remedies this problem.
-
017: SECURITY FIX: September 16, 2003
All architectures
All versions of OpenSSH's sshd prior to 3.7 contain a buffer management error.
It is unclear whether or not this bug is exploitable.
A source code patch exists which remedies this problem.
NOTE: this is the second revision of the patch that fixes an additional
problem.
-
018: SECURITY FIX: September 17, 2003
All architectures
A buffer overflow in the address parsing in
sendmail(8)
may allow an attacker to gain root privileges.
A source code patch exists which remedies this problem.
NOTE: this is the second revision of the patch that fixes an additional
-
019: SECURITY FIX: September 24, 2003
All architectures
Three cases of potential access to freed memory have been found in
pf(4).
At least one of them could be used to panic pf with active scrub rules remotely.
A source code patch exists which remedies this problem.
-
020: SECURITY FIX: October 1, 2003
All architectures
The use of certain ASN.1 encodings or malformed public keys may allow an
attacker to mount a denial of service attack against applications linked with
ssl(3).
This does not affect OpenSSH.
A source code patch exists which remedies this problem.
-
021: RELIABILITY FIX: October 1, 2003
All architectures
It is possible for a local user to cause a system panic by flooding it with spoofed ARP
requests.
A source code patch exists which remedies this problem.