OpenBSD 3.0 Errata

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, 3.1, 3.2, 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: INSTALL ISSUE: November 12, 2001 All architectures
A small bug in the installation script causes the /etc/hosts file to be incorrectly formed.
The resulting file contains a line which reads like:
#.#.#.# hostname. hostname
This line should actually read something like:
#.#.#.# hostname.domainname.com hostname
To correct this problem, simply edit the file and insert the domainname in the required place.
002: SECURITY FIX: November 12, 2001 All architectures
sshd(8) is being upgraded from OpenSSH 3.0 to OpenSSH 3.0.2 to fix a few problems:
- A security hole that may allow an attacker to partially authenticate if -- and only if -- the administrator has enabled KerberosV.
  By default, OpenSSH KerberosV support only becomes active after KerberosV has been properly configured.
- An excessive memory clearing bug (which we believe to be unexploitable) also exists, but since this may cause daemon crashes, we are providing a patch as well.
- A vulnerability in environment passing in the UseLogin sshd option
- Various other non-critical fixes.
Effectively an upgrade of OpenSSH 3.0 to OpenSSH 3.0.2. A source code patch exists which remedies this problem. This is the second version of this patch.
003: RELIABILITY FIX: November 12, 2001
Access to a CD drive on the PCI ultrasparc machines results in a continuous stream of bogus interrupt messages, causing great user anguish.
A source code patch exists which remedies this problem.
004: RELIABILITY FIX: November 12, 2001
Hifn7751 based cards may stop working on certain motherboards due to DMA errors.
A source code patch exists which remedies this problem.
005: RELIABILITY FIX: November 12, 2001
Execution of Altivec instructions will crash the kernel.
A source code patch exists which remedies this problem.
006: SECURITY FIX: November 13, 2001 All architectures
pf(4) was incapable of dealing with certain ipv6 icmp packets, resulting in a crash.
A source code patch exists which remedies this problem.
007: SECURITY FIX: November 13, 2001 All architectures
A security issue exists in the vi.recover script that may allow an attacker to remove arbitrary zero-length files, regardless of ownership.
A source code patch exists which remedies this problem.
008: SECURITY FIX: November 28, 2001 All architectures
A security issue exists in the lpd daemon that may allow an attacker to create arbitrary new files in the root directory. Only machines with line printer access (ie: listed in either /etc/hosts.lpd or /etc/hosts.equiv) may be used to mount an attack and the attacker must have root access on the machine. OpenBSD does not start lpd in the default installation.
A source code patch exists which remedies this problem.
009: INSTALLATION FIX: December 11, 2001
The 3.0 CD2 was created with an error which means that the instructions for booting this architecture will not work. Instead, to boot the CD, press Option-Command-O-F during power up to get into OpenFirmware and then type:
boot cd:,OFWBOOT /3.0/macppc/bsd.rd
010: RELIABILITY FIX: December 13, 2001 All architectures
Systems running with IP-in-IP encapsulation can be made to crash by malformed packets.
A source code patch exists which remedies this problem.
011: SECURITY FIX: January 17, 2002 All architectures
If the Postfix sendmail replacement is installed on a system an attacker may be able to gain root privileges on the local host via sudo(8) which runs the mailer as root with an environment inherited from the invoking user. While this is a bug in sudo it is not believed to be possible to exploit when sendmail (the mailer that ships with OpenBSD) is the mailer. As of version 1.6.5, sudo passes the mailer an environment that is not subject to influence from the invoking user.
A source code patch exists which remedies this problem.
012: SECURITY FIX: January 21, 2002 All architectures
A race condition between the ptrace(2) and execve(2) system calls allows an attacker to modify the memory contents of suid/sgid processes which could lead to compromise of the super-user account.
A source code patch exists which remedies this problem.
013: RELIABILITY FIX: February 4, 2002 All architectures
The wrong filedescriptors are released when pipe(2) failed.
A source code patch exists which remedies this problem.
014: SECURITY FIX: March 8, 2002 All architectures
A local user can gain super-user privileges due to an off-by-one check in the channel forwarding code of OpenSSH.
A source code patch exists which remedies this problem.
015: RELIABILITY FIX: March 13, 2002 All architectures
Under some circumstances the zlib compression library can free dynamically allocated memory twice. This is not a security issue on OpenBSD since the BSD free(3) function detects this. There is also a kernel zlib component that may be used by pppd and IPsec. The feasibility of attacking the kernel this way is currently unknown.
A source code patch exists which remedies this problem.
016: SECURITY FIX: March 19, 2002 All architectures
Under certain conditions, on systems using YP with netgroups in the password database, it is possible for the rexecd(8) and rshd(8) daemons to execute the shell from a different user's password entry. Due to a similar problem, atrun(8) may change to the wrong home directory when running at(1) jobs.
A source code patch exists which remedies this problem.
017: RELIABILITY FIX: March 26, 2002 All architectures
isakmpd(8) will crash when receiving a zero length IKE packet due to a too-late length check.
A source code patch exists which remedies this problem.
018: SECURITY FIX: April 11, 2002 All architectures
mail(1) will process tilde escapes even in non-interactive mode. This can lead to a local root compromise.
A source code patch exists which remedies this problem.
019: SECURITY FIX: April 22, 2002 All architectures
A local user can gain super-user privileges due to a buffer overflow in sshd(8) if AFS has been configured on the system or if KerberosTgtPassing or AFSTokenPassing has been enabled in the sshd_config file. Ticket and token passing is not enabled by default.
A source code patch exists which remedies this problem.
020: SECURITY FIX: April 25, 2002 All architectures
A bug in sudo(8) may allow an attacker to corrupt the heap by specifying a custom prompt.
A source code patch exists which remedies this problem.
021: SECURITY FIX: May 8, 2002 All architectures
A race condition exists where an attacker could fill the file descriptor table and defeat the kernel's protection of fd slots 0, 1, and 2 for a setuid or setgid process.
A source code patch exists which remedies this problem.
022: SECURITY FIX: June 19, 2002 All architectures
A buffer overflow can occur during the interpretation of chunked encoding in the http daemon, leading to possible remote crash or exploit.
A source code patch exists which remedies this problem.
023: SECURITY FIX: June 24, 2002 All architectures
A buffer overflow can occur in the .htaccess parsing code in mod_ssl httpd module, leading to possible remote crash or exploit.
A source code patch exists which remedies this problem.
024: SECURITY FIX: June 24, 2002 All architectures
All versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an input validation error that can result in an integer overflow and privilege escalation. This problem is fixed in OpenSSH 3.4, and a patch for the vulnerable releases is available as part of the security advisory.
025: SECURITY FIX: June 25, 2002 All architectures
A potential buffer overflow in the DNS resolver has been found.
A source code patch exists which remedies this problem.
026: SECURITY FIX: June 27, 2002 All architectures
The kernel would let any user ktrace(2) set[ug]id processes.
A source code patch exists which remedies this problem.
027: RELIABILITY FIX: July 5, 2002 All architectures
Receiving IKE payloads out of sequence can cause isakmpd(8) to crash.
A source code patch exists which remedies this problem.
This is the second version of the patch.
028: SECURITY FIX: July 29, 2002 All architectures
A race condition exists in the pppd(8) daemon which may cause it to alter the file permissions of an arbitrary file.
A source code patch exists which remedies this problem.
029: SECURITY FIX: July 29, 2002 All architectures
A buffer overflow can occur in the xdr_array(3) RPC code, leading to possible remote crash.
A source code patch exists which remedies this problem.
This is the second version of the patch.
030: SECURITY FIX: July 30, 2002 All architectures
Several remote buffer overflows can occur in the SSL2 server and SSL3 client of the ssl(8) library, as in the ASN.1 parser code in the crypto(3) library, all of them being potentially remotely exploitable.
A source code patch exists which remedies this problem.
This is the second version of the patch.
031: SECURITY FIX: August 11, 2002 All architectures
An insufficient boundary check in the select(2) system call allows an attacker to overwrite kernel memory and execute arbitrary code in kernel context.
A source code patch exists which remedies this problem.
032: SECURITY FIX: October 7, 2002 All architectures
Incorrect argument checking in the setitimer(2) system call may allow an attacker to write to kernel memory.
A source code patch exists which remedies this problem.
033: 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.
034: 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.
035: SECURITY FIX: November 6, 2002 All architectures
Incorrect argument checking in the getrlimit(2) system call may allow an attacker to crash the kernel.
A source code patch exists which remedies this problem.
036: 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.