U.S. flag   An official website of the United States government
Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock (Dot gov) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Results (Refine Search)

Search Parameters:
  • Results Type: Overview
  • Keyword (text search): cpe:2.3:o:openbsd:openbsd:2.4:*:*:*:*:*:*:*
  • CPE Name Search: true
There are 70 matching records.
Displaying matches 1 through 20.
Vuln ID Summary CVSS Severity
CVE-2023-38283

In OpenBGPD before 8.1, incorrect handling of BGP update data (length of path attributes) set by a potentially distant remote actor may cause the system to incorrectly reset a session. This is fixed in OpenBSD 7.3 errata 006.

Published: August 29, 2023; 12:15:08 PM -0400
V3.1: 5.3 MEDIUM
V2.0:(not available)
CVE-2021-46880

x509/x509_verify.c in LibreSSL before 3.4.2, and OpenBSD before 7.0 errata 006, allows authentication bypass because an error for an unverified certificate chain is sometimes discarded.

Published: April 14, 2023; 8:15:07 PM -0400
V3.1: 9.8 CRITICAL
V2.0:(not available)
CVE-2022-48437

An issue was discovered in x509/x509_verify.c in LibreSSL before 3.6.1, and in OpenBSD before 7.2 errata 001. x509_verify_ctx_add_chain does not store errors that occur during leaf certificate verification, and therefore an incorrect error is returned. This behavior occurs when there is an installed verification callback that instructs the verifier to continue upon detecting an invalid certificate.

Published: April 12, 2023; 1:15:07 AM -0400
V3.1: 5.3 MEDIUM
V2.0:(not available)
CVE-2020-16088

iked in OpenIKED, as used in OpenBSD through 6.7, allows authentication bypass because ca.c has the wrong logic for checking whether a public key matches.

Published: July 28, 2020; 8:15:12 AM -0400
V3.1: 9.8 CRITICAL
V2.0: 7.5 HIGH
CVE-2019-19726

OpenBSD through 6.6 allows local users to escalate to root because a check for LD_LIBRARY_PATH in setuid programs can be defeated by setting a very small RLIMIT_DATA resource limit. When executing chpass or passwd (which are setuid root), _dl_setup_env in ld.so tries to strip LD_LIBRARY_PATH from the environment, but fails when it cannot allocate memory. Thus, the attacker is able to execute their own library code as root.

Published: December 11, 2019; 8:15:10 PM -0500
V3.1: 7.8 HIGH
V2.0: 7.2 HIGH
CVE-2019-8460

OpenBSD kernel version <= 6.5 can be forced to create long chains of TCP SACK holes that causes very expensive calls to tcp_sack_option() for every incoming SACK packet which can lead to a denial of service.

Published: August 26, 2019; 4:15:10 PM -0400
V3.1: 7.5 HIGH
V2.0: 5.0 MEDIUM
CVE-2017-1000373

The OpenBSD qsort() function is recursive, and not randomized, an attacker can construct a pathological input array of N elements that causes qsort() to deterministically recurse N/4 times. This allows attackers to consume arbitrary amounts of stack memory and manipulate stack memory to assist in arbitrary code execution attacks. This affects OpenBSD 6.1 and possibly earlier versions.

Published: June 19, 2017; 12:29:00 PM -0400
V3.0: 6.5 MEDIUM
V2.0: 6.4 MEDIUM
CVE-2017-1000372

A flaw exists in OpenBSD's implementation of the stack guard page that allows attackers to bypass it resulting in arbitrary code execution using setuid binaries such as /usr/bin/at. This affects OpenBSD 6.1 and possibly earlier versions.

Published: June 19, 2017; 12:29:00 PM -0400
V3.0: 9.8 CRITICAL
V2.0: 7.5 HIGH
CVE-2011-2895

The LZW decompressor in (1) the BufCompressedFill function in fontfile/decompress.c in X.Org libXfont before 1.4.4 and (2) compress/compress.c in 4.3BSD, as used in zopen.c in OpenBSD before 3.8, FreeBSD, NetBSD 4.0.x and 5.0.x before 5.0.3 and 5.1.x before 5.1.1, FreeType 2.1.9, and other products, does not properly handle code words that are absent from the decompression table when encountered, which allows context-dependent attackers to trigger an infinite loop or a heap-based buffer overflow, and possibly execute arbitrary code, via a crafted compressed stream, a related issue to CVE-2006-1168 and CVE-2011-2896.

Published: August 19, 2011; 1:55:03 PM -0400
V3.x:(not available)
V2.0: 9.3 HIGH
CVE-2011-2168

Multiple integer overflows in the glob implementation in libc in OpenBSD before 4.9 might allow context-dependent attackers to have an unspecified impact via a crafted string, related to the GLOB_APPEND and GLOB_DOOFFS flags, a different issue than CVE-2011-0418.

Published: May 24, 2011; 7:55:04 PM -0400
V3.x:(not available)
V2.0: 5.0 MEDIUM
CVE-2011-1013

Integer signedness error in the drm_modeset_ctl function in (1) drivers/gpu/drm/drm_irq.c in the Direct Rendering Manager (DRM) subsystem in the Linux kernel before 2.6.38 and (2) sys/dev/pci/drm/drm_irq.c in the kernel in OpenBSD before 4.9 allows local users to trigger out-of-bounds write operations, and consequently cause a denial of service (system crash) or possibly have unspecified other impact, via a crafted num_crtcs (aka vb_num) structure member in an ioctl argument.

Published: May 09, 2011; 3:55:02 PM -0400
V3.x:(not available)
V2.0: 7.2 HIGH
CVE-2009-0537

Integer overflow in the fts_build function in fts.c in libc in (1) OpenBSD 4.4 and earlier and (2) Microsoft Interix 6.0 build 10.0.6030.0 allows context-dependent attackers to cause a denial of service (application crash) via a deep directory tree, related to the fts_level structure member, as demonstrated by (a) du, (b) rm, (c) chmod, and (d) chgrp on OpenBSD; and (e) SearchIndexer.exe on Vista Enterprise.

Published: March 09, 2009; 5:30:00 PM -0400
V3.x:(not available)
V2.0: 4.9 MEDIUM
CVE-2008-4609

The TCP implementation in (1) Linux, (2) platforms based on BSD Unix, (3) Microsoft Windows, (4) Cisco products, and probably other operating systems allows remote attackers to cause a denial of service (connection queue exhaustion) via multiple vectors that manipulate information in the TCP state table, as demonstrated by sockstress.

Published: October 20, 2008; 1:59:26 PM -0400
V3.x:(not available)
V2.0: 7.1 HIGH
CVE-2007-4305

Multiple race conditions in the (1) Sudo monitor mode and (2) Sysjail policies in Systrace on NetBSD and OpenBSD allow local users to defeat system call interposition, and consequently bypass access control policy and auditing.

Published: August 13, 2007; 5:17:00 PM -0400
V3.x:(not available)
V2.0: 6.2 MEDIUM
CVE-2007-0343

OpenBSD before 20070116 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via certain IPv6 ICMP (aka ICMP6) echo request packets.

Published: January 17, 2007; 9:28:00 PM -0500
V3.x:(not available)
V2.0: 5.0 MEDIUM
CVE-2006-6730

OpenBSD and NetBSD permit usermode code to kill the display server and write to the X.Org /dev/xf86 device, which allows local users with root privileges to reduce securelevel by replacing the System Management Mode (SMM) handler via a write to an SMRAM address within /dev/xf86 (aka the video card memory-mapped I/O range), and then launching the new handler via a System Management Interrupt (SMI), as demonstrated by a write to Programmed I/O port 0xB2.

Published: December 26, 2006; 6:28:00 PM -0500
V3.x:(not available)
V2.0: 6.6 MEDIUM
CVE-2006-6397

Integer overflow in banner/banner.c in FreeBSD, NetBSD, and OpenBSD might allow local users to modify memory via a long banner. NOTE: CVE and multiple third parties dispute this issue. Since banner is not setuid, an exploit would not cross privilege boundaries in normal operations. This issue is not a vulnerability

Published: December 07, 2006; 8:28:00 PM -0500
V3.x:(not available)
V2.0: 4.4 MEDIUM
CVE-2005-4351

The securelevels implementation in FreeBSD 7.0 and earlier, OpenBSD up to 3.8, DragonFly up to 1.2, and Linux up to 2.6.15 allows root users to bypass immutable settings for files by mounting another filesystem that masks the immutable files while the system is running.

Published: December 31, 2005; 12:00:00 AM -0500
V3.x:(not available)
V2.0: 4.3 MEDIUM
CVE-2005-0740

The TCP stack (tcp_input.c) in OpenBSD 3.5 and 3.6 allows remote attackers to cause a denial of service (system panic) via crafted values in the TCP timestamp option, which causes invalid arguments to be used when calculating the retransmit timeout.

Published: January 13, 2005; 12:00:00 AM -0500
V3.x:(not available)
V2.0: 5.0 MEDIUM
CVE-2004-0414

CVS 1.12.x through 1.12.8, and 1.11.x through 1.11.16, does not properly handle malformed "Entry" lines, which prevents a NULL terminator from being used and may lead to a denial of service (crash), modification of critical program data, or arbitrary code execution.

Published: August 06, 2004; 12:00:00 AM -0400
V3.x:(not available)
V2.0: 10.0 HIGH