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Openbsd » Openbsd » * * * * : Security Vulnerabilities

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# CVE ID CWE ID # of Exploits Vulnerability Type(s) Publish Date Update Date Score Gained Access Level Access Complexity Authentication Conf. Integ. Avail.
1 CVE-2020-16088 287 Bypass 2020-07-28 2022-01-04
7.5
None Remote Low Not required Partial Partial Partial
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.
2 CVE-2019-19726 269 Exec Code 2019-12-12 2019-12-27
7.2
None Local Low Not required Complete Complete Complete
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.
3 CVE-2019-8460 DoS 2019-08-26 2021-08-02
5.0
None Remote Low Not required None None Partial
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.
4 CVE-2017-1000373 400 Exec Code 2017-06-19 2017-10-24
6.4
None Remote Low Not required None Partial Partial
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.
5 CVE-2017-1000372 Exec Code Bypass 2017-06-19 2019-10-03
7.5
None Remote Low Not required Partial Partial Partial
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.
6 CVE-2011-2895 119 Exec Code Overflow 2011-08-19 2017-08-29
9.3
None Remote Medium Not required Complete Complete Complete
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.
7 CVE-2011-2168 189 Overflow 2011-05-24 2011-06-11
5.0
None Remote Low Not required None None Partial
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.
8 CVE-2011-1013 787 DoS 2011-05-09 2020-08-05
7.2
None Local Low Not required Complete Complete Complete
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.
9 CVE-2009-0537 189 DoS Overflow 2009-03-09 2018-10-11
4.9
None Local Low Not required None None Complete
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.
10 CVE-2008-4609 16 DoS 2008-10-20 2021-07-07
7.1
None Remote Medium Not required None None Complete
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.
11 CVE-2007-0343 DoS 2007-01-18 2008-09-05
5.0
None Remote Low Not required None None Partial
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.
12 CVE-2006-6730 2006-12-26 2018-10-17
6.6
None Local Medium ??? Complete Complete Complete
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.
13 CVE-2006-6397 Overflow 2006-12-08 2018-10-17
4.4
None Local Medium Not required Partial Partial Partial
** DISPUTED ** 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.
14 CVE-2005-4351 Bypass 2005-12-31 2017-07-20
4.3
None Local Low ??? Partial Partial Partial
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.
15 CVE-2004-0492 DoS Exec Code Overflow 2004-08-06 2021-06-06
10.0
None Remote Low Not required Complete Complete Complete
Heap-based buffer overflow in proxy_util.c for mod_proxy in Apache 1.3.25 to 1.3.31 allows remote attackers to cause a denial of service (process crash) and possibly execute arbitrary code via a negative Content-Length HTTP header field, which causes a large amount of data to be copied.
16 CVE-2004-0418 Exec Code 2004-08-06 2018-05-03
10.0
None Remote Low Not required Complete Complete Complete
serve_notify in CVS 1.12.x through 1.12.8, and 1.11.x through 1.11.16, does not properly handle empty data lines, which may allow remote attackers to perform an "out-of-bounds" write for a single byte to execute arbitrary code or modify critical program data.
17 CVE-2004-0417 Overflow 2004-08-06 2018-05-03
5.0
None Remote Low Not required None None Partial
Integer overflow in the "Max-dotdot" CVS protocol command (serve_max_dotdot) for CVS 1.12.x through 1.12.8, and 1.11.x through 1.11.16, may allow remote attackers to cause a server crash, which could cause temporary data to remain undeleted and consume disk space.
18 CVE-2004-0416 119 Exec Code Overflow 2004-08-06 2018-05-03
10.0
None Remote Low Not required Complete Complete Complete
Double free vulnerability for the error_prog_name string in CVS 1.12.x through 1.12.8, and 1.11.x through 1.11.16, may allow remote attackers to execute arbitrary code.
19 CVE-2004-0414 DoS Exec Code 2004-08-06 2018-05-03
10.0
None Remote Low Not required Complete Complete Complete
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.
20 CVE-2004-0222 DoS 2004-05-04 2017-07-11
5.0
None Remote Low Not required None None Partial
Multiple memory leaks in isakmpd in OpenBSD 3.4 and earlier allow remote attackers to cause a denial of service (memory exhaustion) via certain ISAKMP packets, as demonstrated by the Striker ISAKMP Protocol Test Suite.
21 CVE-2004-0221 DoS 2004-05-04 2017-07-11
5.0
None Remote Low Not required None None Partial
isakmpd in OpenBSD 3.4 and earlier allows remote attackers to cause a denial of service (crash) via an ISAKMP packet with a delete payload containing a large number of SPIs, which triggers an out-of-bounds read error, as demonstrated by the Striker ISAKMP Protocol Test Suite.
22 CVE-2004-0220 119 DoS Overflow 2004-05-04 2017-07-11
10.0
None Remote Low Not required Complete Complete Complete
isakmpd in OpenBSD 3.4 and earlier allows remote attackers to cause a denial of service via an ISAKMP packet with a malformed Cert Request payload, which causes an integer underflow that is used in a malloc operation that is not properly handled, as demonstrated by the Striker ISAKMP Protocol Test Suite.
23 CVE-2004-0219 DoS 2004-05-04 2017-07-11
5.0
None Remote Low Not required None None Partial
isakmpd in OpenBSD 3.4 and earlier allows remote attackers to cause a denial of service (crash) via an ISAKMP packet with a malformed IPSEC SA payload, as demonstrated by the Striker ISAKMP Protocol Test Suite.
24 CVE-2004-0218 DoS 2004-05-04 2017-07-11
5.0
None Remote Low Not required None None Partial
isakmpd in OpenBSD 3.4 and earlier allows remote attackers to cause a denial of service (infinite loop) via an ISAKMP packet with a zero-length payload, as demonstrated by the Striker ISAKMP Protocol Test Suite.
25 CVE-2004-0114 +Priv 2004-03-03 2017-10-10
4.6
None Local Low Not required Partial Partial Partial
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 reference count when the vm_map_find function fails, which could allow local users to gain read or write access to a portion of kernel memory and gain privileges.
26 CVE-2002-0701 +Info 2002-07-23 2016-10-18
2.1
None Local Low Not required Partial None None
ktrace in BSD-based operating systems allows the owner of a process with special privileges to trace the process after its privileges have been lowered, which may allow the owner to obtain sensitive information that the process obtained while it was running with the extra privileges.
27 CVE-2002-0381 Bypass 2002-06-25 2008-09-05
5.0
None Remote Low Not required Partial None None
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.
28 CVE-2001-1145 2001-08-17 2008-09-10
6.2
None Local High Not required Complete Complete Complete
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 directory is moved, which could cause scripts to perform dangerous actions on the wrong directories.
29 CVE-2001-0670 Exec Code Overflow 2001-10-03 2017-10-10
7.5
None Remote Low Not required Partial Partial Partial
Buffer overflow in BSD line printer daemon (in.lpd or lpd) in various BSD-based operating systems allows remote attackers to execute arbitrary code via an incomplete print job followed by a request to display the printer queue.
30 CVE-2001-0378 2001-06-27 2017-10-10
2.1
None Local Low Not required Partial None None
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 files.
31 CVE-2001-0284 DoS Exec Code Overflow 2001-05-03 2008-09-10
10.0
None Remote Low Not required Complete Complete Complete
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 Authentication header (AH) IPv4 option.
32 CVE-2001-0268 +Priv 2001-05-03 2017-10-10
7.2
None Local Low Not required Complete Complete Complete
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 root privileges by creating a segment call gate in the Local Descriptor Table (LDT) with a target that specifies an arbitrary kernel address.
33 CVE-2000-0996 +Priv 2000-12-19 2018-05-03
7.2
None Local Low Not required Complete Complete Complete
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.
34 CVE-2000-0995 +Priv 2000-12-19 2018-05-03
7.2
None Local Low Not required Complete Complete Complete
Format string vulnerability in OpenBSD yp_passwd program (and possibly other BSD-based operating systems) allows attackers to gain root privileges a malformed name.
35 CVE-1999-1225 1997-08-24 2017-12-19
5.0
None Remote Low Not required Partial None None
rpc.mountd on Linux, Ultrix, and possibly other operating systems, allows remote attackers to determine the existence of a file on the server by attempting to mount that file, which generates different error messages depending on whether the file exists or not.
36 CVE-1999-0484 Overflow 1999-02-23 2008-09-09
2.1
None Local Low Not required None Partial None
Buffer overflow in OpenBSD ping.
37 CVE-1999-0483 1999-02-25 2008-09-09
2.1
None Local Low Not required None None Partial
OpenBSD crash using nlink value in FFS and EXT2FS filesystems.
38 CVE-1999-0482 1999-03-21 2008-09-09
5.0
None Remote Low Not required None None Partial
OpenBSD kernel crash through TSS handling, as caused by the crashme program.
Total number of vulnerabilities : 38   Page : 1 (This Page)
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