Vulnerabilities > Freebsd > Critical

DATE CVE VULNERABILITY TITLE RISK
2024-09-05 CVE-2024-43102 Use After Free vulnerability in Freebsd
Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of UMTX_OP_SHM can lead to decreasing the reference count of the object representing the mapping too many times, causing it to be freed too early. A malicious code exercizing the UMTX_SHM_DESTROY sub-request in parallel can panic the kernel or enable further Use-After-Free attacks, potentially including code execution or Capsicum sandbox escape.
network
low complexity
freebsd CWE-416
critical
10.0
2023-11-08 CVE-2023-5941 Incorrect Calculation of Buffer Size vulnerability in Freebsd
In versions of FreeBSD 12.4-RELEASE prior to 12.4-RELEASE-p7 and FreeBSD 13.2-RELEASE prior to 13.2-RELEASE-p5 the __sflush() stdio function in libc does not correctly update FILE objects' write space members for write-buffered streams when the write(2) system call returns an error.
network
low complexity
freebsd CWE-131
critical
9.8
2023-06-22 CVE-2023-3326 Improper Authentication vulnerability in Freebsd
pam_krb5 authenticates a user by essentially running kinit with the password, getting a ticket-granting ticket (tgt) from the Kerberos KDC (Key Distribution Center) over the network, as a way to verify the password.
network
low complexity
freebsd CWE-287
critical
9.8
2021-08-03 CVE-2021-36159 Out-of-bounds Read vulnerability in Freebsd Libfetch
libfetch before 2021-07-26, as used in apk-tools, xbps, and other products, mishandles numeric strings for the FTP and HTTP protocols.
network
low complexity
freebsd CWE-125
critical
9.1
2021-03-29 CVE-2020-25583 Classic Buffer Overflow vulnerability in Freebsd
In FreeBSD 12.2-STABLE before r368250, 11.4-STABLE before r368253, 12.2-RELEASE before p1, 12.1-RELEASE before p11 and 11.4-RELEASE before p5 when processing a DNSSL option, rtsold(8) decodes domain name labels per an encoding specified in RFC 1035 in which the first octet of each label contains the label's length.
network
low complexity
freebsd CWE-120
critical
10.0
2021-03-29 CVE-2020-25577 Classic Buffer Overflow vulnerability in Freebsd 11.4/12.1/12.2
In FreeBSD 12.2-STABLE before r368250, 11.4-STABLE before r368253, 12.2-RELEASE before p1, 12.1-RELEASE before p11 and 11.4-RELEASE before p5 rtsold(8) does not verify that the RDNSS option does not extend past the end of the received packet before processing its contents.
network
low complexity
freebsd CWE-120
critical
10.0
2021-03-26 CVE-2020-7468 Unspecified vulnerability in Freebsd
In FreeBSD 12.2-STABLE before r365772, 11.4-STABLE before r365773, 12.1-RELEASE before p10, 11.4-RELEASE before p4 and 11.3-RELEASE before p14 a ftpd(8) bug in the implementation of the file system sandbox, combined with capabilities available to an authenticated FTP user, can be used to escape the file system restriction configured in ftpchroot(5).
network
low complexity
freebsd
critical
9.0
2020-04-29 CVE-2020-7452 Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Freebsd 11.3/12.1
In FreeBSD 12.1-STABLE before r357490, 12.1-RELEASE before 12.1-RELEASE-p3, 11.3-STABLE before r357489, and 11.3-RELEASE before 11.3-RELEASE-p7, incorrect use of a user-controlled pointer in the epair virtual network module allowed vnet jailed privileged users to panic the host system and potentially execute arbitrary code in the kernel.
network
low complexity
freebsd CWE-119
critical
9.0
2019-08-30 CVE-2019-5608 Out-of-bounds Write vulnerability in multiple products
In FreeBSD 12.0-STABLE before r350648, 12.0-RELEASE before 12.0-RELEASE-p9, 11.3-STABLE before r350650, 11.3-RELEASE before 11.3-RELEASE-p2, and 11.2-RELEASE before 11.2-RELEASE-p13, the ICMPv6 input path incorrectly handles cases where an MLDv2 listener query packet is internally fragmented across multiple mbufs.
network
low complexity
freebsd netapp CWE-787
critical
9.8
2019-07-26 CVE-2019-5604 Out-of-bounds Read vulnerability in Freebsd
In FreeBSD 12.0-STABLE before r350246, 12.0-RELEASE before 12.0-RELEASE-p8, 11.3-STABLE before r350247, 11.3-RELEASE before 11.3-RELEASE-p1, and 11.2-RELEASE before 11.2-RELEASE-p12, the emulated XHCI device included with the bhyve hypervisor did not properly validate data provided by the guest, allowing an out-of-bounds read.
network
low complexity
freebsd CWE-125
critical
9.6