When a program running on an affected system appends data to a file via an NFS client mount, the bug can cause the NFS client to fail to copy in the data to be written but proceed as though the copy operation had succeeded. This means that the data to be written is instead replaced with whatever data had been in the packet buffer previously. Thus, an unprivileged user with access to an affected system may abuse the bug to trigger disclosure of sensitive information. In particular, the leak is limited to data previously stored in mbufs, which are used for network transmission and reception, and for certain types of inter-process communication. The bug can also be triggered unintentionally by system applications, in which case the data written by the application to an NFS mount may be corrupted. Corrupted data is written over the network to the NFS server, and thus also susceptible to being snooped by other hosts on the network. Note that the bug exists only in the NFS client; the version and implementation of the server has no effect on whether a given system is affected by the problem.
Max CVSS
6.5
EPSS Score
0.05%
Published
2023-12-13
Updated
2024-03-22
On an msdosfs filesystem, the 'truncate' or 'ftruncate' system calls under certain circumstances populate the additional space in the file with unallocated data from the underlying disk device, rather than zero bytes. This may permit a user with write access to files on a msdosfs filesystem to read unintended data (e.g. from a previously deleted file).
Max CVSS
6.5
EPSS Score
0.06%
Published
2023-10-04
Updated
2023-11-29
When GELI reads a key file from standard input, it does not reuse the key file to initialize multiple providers at once resulting in the second and subsequent devices silently using a NULL key as the user key file. If a user only uses a key file without a user passphrase, the master key is encrypted with an empty key file allowing trivial recovery of the master key.
Max CVSS
6.5
EPSS Score
0.06%
Published
2023-02-08
Updated
2023-02-16
In FreeBSD 12.1-STABLE before r362166, 12.1-RELEASE before p8, 11.4-STABLE before r362167, 11.4-RELEASE before p2, and 11.3-RELEASE before p12, missing length validation code common to mulitple USB network drivers allows a malicious USB device to write beyond the end of an allocated network packet buffer.
Max CVSS
6.8
EPSS Score
0.08%
Published
2020-08-06
Updated
2022-06-05
In FreeBSD 12.1-STABLE before r359021, 12.1-RELEASE before 12.1-RELEASE-p3, 11.3-STABLE before r359020, and 11.3-RELEASE before 11.3-RELEASE-p7, a missing null termination check in the jail_set configuration option "osrelease" may return more bytes with a subsequent jail_get system call allowing a malicious jail superuser with permission to create nested jails to read kernel memory.
Max CVSS
6.0
EPSS Score
0.04%
Published
2020-04-29
Updated
2020-05-06
In FreeBSD 11.3-STABLE before r350217, 11.3-RELEASE before 11.3-RELEASE-p1, and 11.2-RELEASE before 11.2-RELEASE-p12, due to insufficient initialization of memory copied to userland in the freebsd32_ioctl interface, small amounts of kernel memory may be disclosed to userland processes. This may allow an attacker to leverage this information to obtain elevated privileges either directly or indirectly.
Max CVSS
6.8
EPSS Score
0.16%
Published
2019-07-26
Updated
2023-03-01
In FreeBSD 12.0-STABLE before r347474, 12.0-RELEASE before 12.0-RELEASE-p7, 11.2-STABLE before r347475, and 11.2-RELEASE before 11.2-RELEASE-p11, a bug in the FFS implementation causes up to three bytes of kernel stack memory to be written to disk as uninitialized directory entry padding.
Max CVSS
6.5
EPSS Score
0.06%
Published
2019-07-03
Updated
2019-07-15
FreeBSD CVSweb version 2.x contains a Cross Site Scripting (XSS) vulnerability in all pages that can result in limited impact--CVSweb is anonymous & read-only. It might impact other sites on same domain. This attack appears to be exploitable via victim must load specially crafted url. This vulnerability appears to have been fixed in 3.x.
Max CVSS
6.1
EPSS Score
0.09%
Published
2019-02-04
Updated
2019-02-07
Wi-Fi Protected Access (WPA and WPA2) allows reinstallation of the Tunneled Direct-Link Setup (TDLS) Peer Key (TPK) during the TDLS handshake, allowing an attacker within radio range to replay, decrypt, or spoof frames.
Max CVSS
6.8
EPSS Score
0.17%
Published
2017-10-17
Updated
2019-10-03
Wi-Fi Protected Access (WPA and WPA2) allows reinstallation of the Station-To-Station-Link (STSL) Transient Key (STK) during the PeerKey handshake, allowing an attacker within radio range to replay, decrypt, or spoof frames.
Max CVSS
6.8
EPSS Score
0.17%
Published
2017-10-17
Updated
2019-10-03
Wi-Fi Protected Access (WPA and WPA2) allows reinstallation of the Pairwise Transient Key (PTK) Temporal Key (TK) during the four-way handshake, allowing an attacker within radio range to replay, decrypt, or spoof frames.
Max CVSS
6.8
EPSS Score
0.16%
Published
2017-10-17
Updated
2019-10-03
Integer signedness error in the amd64_set_ldt function in sys/amd64/amd64/sys_machdep.c in FreeBSD 9.3 before p39, 10.1 before p31, and 10.2 before p14 allows local users to cause a denial of service (kernel panic) via an i386_set_ldt system call, which triggers a heap-based buffer overflow.
Max CVSS
6.2
EPSS Score
0.46%
Published
2016-04-12
Updated
2018-10-09
NTP before 4.2.8p6 and 4.3.x before 4.3.90, when configured in broadcast mode, allows man-in-the-middle attackers to conduct replay attacks by sniffing the network.
Max CVSS
6.5
EPSS Score
0.67%
Published
2017-01-30
Updated
2021-04-26
The routed daemon in FreeBSD 9.3 before 9.3-RELEASE-p22, 10.2-RC2 before 10.2-RC2-p1, 10.2-RC1 before 10.2-RC1-p2, 10.2 before 10.2-BETA2-p3, and 10.1 before 10.1-RELEASE-p17 allows remote authenticated users to cause a denial of service (assertion failure and daemon exit) via a query from a network that is not directly connected.
Max CVSS
6.5
EPSS Score
0.74%
Published
2018-02-05
Updated
2018-03-14
The Neighbor Discovery (ND) protocol implementation in the IPv6 stack in FreeBSD through 10.1 allows remote attackers to reconfigure a hop-limit setting via a small hop_limit value in a Router Advertisement (RA) message.
Max CVSS
6.5
EPSS Score
0.23%
Published
2020-02-20
Updated
2020-02-28
The __sflush function in fflush.c in stdio in libc in FreeBSD 10.1 and the kernel in Apple iOS before 9 mishandles failures of the write system call, which allows context-dependent attackers to execute arbitrary code or cause a denial of service (heap-based buffer overflow) via a crafted application.
Max CVSS
6.9
EPSS Score
0.08%
Published
2015-09-18
Updated
2016-04-06
The (1) IPv6 and (2) ATM ioctl request handlers in the kernel in FreeBSD 8.3 through 9.2-STABLE do not validate SIOCSIFADDR, SIOCSIFBRDADDR, SIOCSIFDSTADDR, and SIOCSIFNETMASK requests, which allows local users to perform link-layer actions, cause a denial of service (panic), or possibly gain privileges via a crafted application.
Max CVSS
6.9
EPSS Score
0.04%
Published
2013-09-23
Updated
2013-10-24
The vfs_hang_addrlist function in sys/kern/vfs_export.c in the NFS server implementation in the kernel in FreeBSD 8.3 and 9.x through 9.1-RELEASE-p5 controls authorization for host/subnet export entries on the basis of group information sent by the client, which allows remote attackers to bypass file permissions on NFS filesystems via crafted requests.
Max CVSS
6.4
EPSS Score
0.70%
Published
2013-07-29
Updated
2019-03-18

CVE-2013-2171

Public exploit
The vm_map_lookup function in sys/vm/vm_map.c in the mmap implementation in the kernel in FreeBSD 9.0 through 9.1-RELEASE-p4 does not properly determine whether a task should have write access to a memory location, which allows local users to bypass filesystem write permissions and consequently gain privileges via a crafted application that leverages read permissions, and makes mmap and ptrace system calls.
Max CVSS
6.9
EPSS Score
0.42%
Published
2013-07-02
Updated
2019-03-18
Directory traversal vulnerability in openpam_configure.c in OpenPAM before r478 on FreeBSD 8.1 allows local users to load arbitrary DSOs and gain privileges via a .. (dot dot) in the service_name argument to the pam_start function, as demonstrated by a .. in the -c option to kcheckpass.
Max CVSS
6.9
EPSS Score
0.06%
Published
2011-11-17
Updated
2017-08-29
Buffer overflow in libarchive through 2.8.5 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted TAR archive.
Max CVSS
6.8
EPSS Score
1.59%
Published
2012-04-13
Updated
2018-01-10
Multiple buffer overflows in the (1) heap_add_entry and (2) relocate_dir functions in archive_read_support_format_iso9660.c in libarchive through 2.8.5 allow remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted ISO9660 image.
Max CVSS
6.8
EPSS Score
1.59%
Published
2012-04-13
Updated
2018-01-10
sys/nfsclient/nfs_vfsops.c in the NFS client in the kernel in FreeBSD 7.2 through 8.1-PRERELEASE, when vfs.usermount is enabled, does not validate the length of a certain fhsize parameter, which allows local users to gain privileges via a crafted mount request.
Max CVSS
6.9
EPSS Score
0.04%
Published
2010-05-28
Updated
2012-11-06
The replay functionality for ZFS Intent Log (ZIL) in FreeBSD 7.1, 7.2, and 8.0, when creating files during replay of a setattr transaction, uses 7777 permissions instead of the original permissions, which might allow local users to read or modify unauthorized files in opportunistic circumstances after a system crash or power failure.
Max CVSS
6.9
EPSS Score
0.04%
Published
2010-01-15
Updated
2011-08-08
Race condition in the Pipe (IPC) close function in FreeBSD 6.3 and 6.4 allows local users to cause a denial of service (crash) or gain privileges via vectors related to kqueues, which triggers a use after free, leading to a NULL pointer dereference or memory corruption.
Max CVSS
6.9
EPSS Score
0.05%
Published
2009-10-06
Updated
2009-10-07
39 vulnerabilities found
1 2
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