About “OpenBSD”

A curated feed of “OpenBSD”-related CVEs appears below. We currently track 169 CVEs for this tag (all time). In the last 365 days, 4 were published. Average CVSS is 6.2 (all time; 5.7 over 365d), and 41% are rated High/Critical (all time). Top CWEs (last 365 days): CWE-1284 - Improper Validation of Specified Quantity in Input, CWE-190 - Integer Overflow or Wraparound.

In our taxonomy this topic maps to a MODERATE impact class. Issues here typically affect operating system packages or kernels. Plan reboots or service restarts and coordinate rollouts across fleets. Use the filters below to sort by CVSS, risk and CWE. Each detail page highlights vendor advisories and mitigation tips.

CVEs tagged with this topic. Filters apply to the whole list (loaded from JSON).

CVSS ≥ 0.0
2004-03-03
Medium

CVE-2004-0114

The shmat system call in the System V Shared Memory interface for FreeBSD 5.2 and earlier, NetBSD 1.3 and earlier, and OpenBSD 2.6 and earlier, does not properly decrement a shared memory segment's r…

2003-12-31
Low

CVE-2003-1366

chpass in OpenBSD 2.0 through 3.2 allows local users to read portions of arbitrary files via a hard link attack on a temporary file used to store user database information.

Medium

CVE-2003-1418

Apache HTTP Server 1.3.22 through 1.3.27 on OpenBSD allows remote attackers to obtain sensitive information via (1) the ETag header, which reveals the inode number, or (2) multipart MIME boundary, wh…

2003-12-15
Medium

CVE-2003-0955

OpenBSD kernel 3.3 and 3.4 allows local users to cause a denial of service (kernel panic) and possibly execute arbitrary code in 3.4 via a program with an invalid header that is not properly handled…

2003-04-11
High

CVE-2002-1420

Integer signedness error in select() on OpenBSD 3.1 and earlier allows local users to overwrite arbitrary kernel memory via a negative value for the size parameter, which satisfies the boundary check…

2003-03-31
High

CVE-2003-0144

Buffer overflow in the lprm command in the lprold lpr package on SuSE 7.1 through 7.3, OpenBSD 3.2 and earlier, and possibly other operating systems, allows local users to gain root privileges via lo…

2002-12-31
Low

CVE-2002-2092

Race condition in exec in OpenBSD 4.0 and earlier, NetBSD 1.5.2 and earlier, and FreeBSD 4.4 and earlier allows local users to gain privileges by attaching a debugger to a process before the kernel h…

Medium

CVE-2002-2180

The setitimer(2) system call in OpenBSD 2.0 through 3.1 does not properly check certain arguments, which allows local users to write to kernel memory and possibly gain root privileges, possibly via a…

Medium

CVE-2002-2188

OpenBSD before 3.2 allows local users to cause a denial of service (kernel crash) via a call to getrlimit(2) with invalid arguments, possibly due to an integer signedness error.

Medium

CVE-2002-2222

isakmpd/message.c in isakmpd in FreeBSD before isakmpd-20020403_1, and in OpenBSD 3.1, allows remote attackers to cause a denial of service (crash) by sending Internet Key Exchange (IKE) payloads out…

Low

CVE-2002-2280

syslogd on OpenBSD 2.9 through 3.2 does not change the source IP address of syslog packets when the machine's IP addressed is changed without rebooting, e.g. via ifconfig, which can cause incorrect i…

2002-08-12
Medium

CVE-2002-0514

PF in OpenBSD 3.0 with the return-rst rule sets the TTL to 128 in the RST packet, which allows remote attackers to determine if a port is being filtered because the TTL is different than the default…

High

CVE-2002-0766

OpenBSD 2.9 through 3.1 allows local users to cause a denial of service (resource exhaustion) and gain root privileges by filling the kernel's file descriptor table and closing file descriptors 0, 1,…

2002-07-03
High

CVE-2002-0542

mail in OpenBSD 2.9 and 3.0 processes a tilde (~) escape character in a message even when it is not in interactive mode, which could allow local users to gain root privileges via calls to mail in cro…

High

CVE-2002-0557

Vulnerability in OpenBSD 3.0, when using YP with netgroups in the password database, causes (1) rexec or (2) rsh to run another user's shell, or (3) atrun to change to a different user's directory, p…

Critical

CVE-2002-0640

Buffer overflow in sshd in OpenSSH 2.3.1 through 3.3 may allow remote attackers to execute arbitrary code via a large number of responses during challenge response authentication when OpenBSD is usin…

2001-12-31
Medium

CVE-2001-1559

The uipc system calls (uipc_syscalls.c) in OpenBSD 2.9 and 3.0 provide user mode return instead of versus rval kernel mode values to the fdrelease function, which allows local users to cause a denial…

2001-11-13
Medium

CVE-2001-1415

vi.recover in OpenBSD before 3.1 allows local users to remove arbitrary zero-byte files such as device nodes.

2001-08-17
Medium

CVE-2001-1145

fts routines in FreeBSD 4.3 and earlier, NetBSD before 1.5.2, and OpenBSD 2.9 and earlier can be forced to change (chdir) into a different directory than intended when the directory above the current…

2001-06-27
Low

CVE-2001-0378

readline prior to 4.1, in OpenBSD 2.8 and earlier, creates history files with insecure permissions, which allows a local attacker to recover potentially sensitive information via readline history fil…

2001-06-02
Low

CVE-2001-1047

Race condition in OpenBSD VFS allows local users to cause a denial of service (kernel panic) by (1) creating a pipe in one thread and causing another thread to set one of the file descriptors to NULL…

2001-05-03
High

CVE-2001-0268

The i386_set_ldt system call in NetBSD 1.5 and earlier, and OpenBSD 2.8 and earlier, when the USER_LDT kernel option is enabled, does not validate a call gate target, which allows local users to gain…

Critical

CVE-2001-0284

Buffer overflow in IPSEC authentication mechanism for OpenBSD 2.8 and earlier allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a malformed Authenticati…

2001-03-12
Low

CVE-2000-0309

The i386 trace-trap handling in OpenBSD 2.4 with DDB enabled allows a local user to cause a denial of service.

Medium

CVE-2000-0310

IP fragment assembly in OpenBSD 2.4 allows a remote attacker to cause a denial of service by sending a large number of fragmented packets.

High

CVE-2000-0312

cron in OpenBSD 2.5 allows local users to gain root privileges via an argv[] that is not NULL terminated, which is passed to cron's fake popen function.

Medium

CVE-2000-0313

Vulnerability in OpenBSD 2.6 allows a local user to change interface media configurations.

2000-12-19
Medium

CVE-2000-0914

OpenBSD 2.6 and earlier allows remote attackers to cause a denial of service by flooding the server with ARP requests.

Medium

CVE-2000-0962

The IPSEC implementation in OpenBSD 2.7 does not properly handle empty AH/ESP packets, which allows remote attackers to cause a denial of service.

High

CVE-2000-0994

Format string vulnerability in OpenBSD fstat program (and possibly other BSD-based operating systems) allows local users to gain root privileges via the PWD environmental variable.

High

CVE-2000-0995

Format string vulnerability in OpenBSD yp_passwd program (and possibly other BSD-based operating systems) allows attackers to gain root privileges a malformed name.

High

CVE-2000-0996

Format string vulnerability in OpenBSD su program (and possibly other BSD-based operating systems) allows local attackers to gain root privileges via a malformed shell.

High

CVE-2000-0997

Format string vulnerabilities in eeprom program in OpenBSD, NetBSD, and possibly other operating systems allows local attackers to gain root privileges.

2000-12-11
Critical

CVE-2000-0999

Format string vulnerabilities in OpenBSD ssh program (and possibly other BSD-based operating systems) allow attackers to gain root privileges.

Medium

CVE-2000-1004

Format string vulnerability in OpenBSD photurisd allows local users to execute arbitrary commands via a configuration file directory name that contains formatting characters.

Critical

CVE-2000-1010

Format string vulnerability in talkd in OpenBSD and possibly other BSD-based OSes allows remote attackers to execute arbitrary commands via a user name that contains format characters.

2000-07-07
Medium

CVE-2000-0574

FTP servers such as OpenBSD ftpd, NetBSD ftpd, ProFTPd and Opieftpd do not properly cleanse untrusted format strings that are used in the setproctitle function (sometimes called by set_proc_title), w…

1999-09-05
Low

CVE-2000-0489

FreeBSD, NetBSD, and OpenBSD allow an attacker to cause a denial of service by creating a large number of socket pairs using the socketpair function, setting a large buffer size via setsockopt, then…

1999-08-12
Medium

CVE-1999-0724

Buffer overflow in OpenBSD procfs and fdescfs file systems via uio_offset in the readdir() function.

1999-08-06
Medium

CVE-1999-0727

A kernel leak in the OpenBSD kernel allows IPsec packets to be sent unencrypted.

1999-08-03
Low

CVE-1999-0703

OpenBSD, BSDI, and other Unix operating systems allow users to set chflags and fchflags on character and block devices.

1999-03-22
Medium

CVE-1999-0481

Denial of service in "poll" in OpenBSD.

1999-03-21
Medium

CVE-1999-0482

OpenBSD kernel crash through TSS handling, as caused by the crashme program.

1999-02-25
Low

CVE-1999-0483

OpenBSD crash using nlink value in FFS and EXT2FS filesystems.

1999-02-23
Low

CVE-1999-0484

Buffer overflow in OpenBSD ping.

1999-02-19
Low

CVE-1999-0485

Remote attackers can cause a system crash through ipintr() in ipq in OpenBSD.

1998-12-04
Critical

CVE-1999-0798

Buffer overflow in bootpd on OpenBSD, FreeBSD, and Linux systems via a malformed header type.

1998-08-03
High

CVE-1999-0062

The chpass command in OpenBSD allows a local user to gain root access through file descriptor leakage.

1998-02-01
Medium

CVE-1999-0305

The system configuration control (sysctl) facility in BSD based operating systems OpenBSD 2.2 and earlier, and FreeBSD 2.2.5 and earlier, does not properly restrict source routed packets even when th…