CVSS: 7.5EPSS: 0%CPEs: 8EXPL: 1CVE-2020-25866
https://notcve.org/view.php?id=CVE-2020-25866
In Wireshark 3.2.0 to 3.2.6 and 3.0.0 to 3.0.13, the BLIP protocol dissector has a NULL pointer dereference because a buffer was sized for compressed (not uncompressed) messages. This was addressed in epan/dissectors/packet-blip.c by allowing reasonable compression ratios and rejecting ZIP bombs. En Wireshark versiones 3.2.0 hasta 3.2.6 y versiones 3.0.0 hasta 3.0.13, el disector del protocolo BLIP presenta una desreferencia del puntero NULL porque un búfer fue dimensionado para mensajes comprimidos (no sin comprimir). Esto fue abordado en el archivo epan/disactors/packet-blip.c permitiendo relaciones de compresión razonables y rechazando las bombas ZIP • http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00035.html http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00038.html https://gitlab.com/wireshark/wireshark/-/commit/4a948427100b6c109f4ec7b4361f0d2aec5e5c3f https://gitlab.com/wireshark/wireshark/-/issues/16866 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4DQHPKZFQ7W3X34RYN3FWFYCFJD4FXJW https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6IGRYKW4XLR44YDWTAH547ODYYBYPB2D&# • CWE-476: NULL Pointer Dereference •
CVSS: 7.5EPSS: 0%CPEs: 11EXPL: 1CVE-2020-25862
https://notcve.org/view.php?id=CVE-2020-25862
In Wireshark 3.2.0 to 3.2.6, 3.0.0 to 3.0.13, and 2.6.0 to 2.6.20, the TCP dissector could crash. This was addressed in epan/dissectors/packet-tcp.c by changing the handling of the invalid 0xFFFF checksum. En Wireshark versiones 3.2.0 hasta 3.2.6, versiones 3.0.0 hasta 3.0.13 y versiones 2.6.0 hasta 2.6.20, el disector TCP podría bloquearse. Esto fue abordado en el archivo epan/disactors/packet-tcp.c mediante el cambio en el manejo del checksum 0xFFFF no válido • http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00035.html http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00038.html https://gitlab.com/wireshark/wireshark/-/commit/7f3fe6164a68b76d9988c4253b24d43f498f1753 https://gitlab.com/wireshark/wireshark/-/issues/16816 https://lists.debian.org/debian-lts-announce/2021/02/msg00008.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4DQHPKZFQ7W3X34RYN3FWFYCFJD4FXJW https://lists.fedoraproject.org/archives&# • CWE-354: Improper Validation of Integrity Check Value •
CVSS: 5.5EPSS: 0%CPEs: 15EXPL: 0CVE-2020-25641 – kernel: soft-lockups in iov_iter_copy_from_user_atomic() could result in DoS
https://notcve.org/view.php?id=CVE-2020-25641
A flaw was found in the Linux kernel's implementation of biovecs in versions before 5.9-rc7. A zero-length biovec request issued by the block subsystem could cause the kernel to enter an infinite loop, causing a denial of service. This flaw allows a local attacker with basic privileges to issue requests to a block device, resulting in a denial of service. The highest threat from this vulnerability is to system availability. Se encontró un fallo en la implementación de biovecs del kernel de Linux en versiones anteriores a 5.9-rc7. • http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00042.html http://www.openwall.com/lists/oss-security/2020/10/06/9 https://bugzilla.redhat.com/show_bug.cgi?id=1881424 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7e24969022cbd61ddc586f14824fc205661bb124 https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html https://lists.debian.org/debian-lts-announce/2020/ • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •
CVSS: 7.2EPSS: 0%CPEs: 3EXPL: 1CVE-2020-25637 – libvirt: double free in qemuAgentGetInterfaces() in qemu_agent.c
https://notcve.org/view.php?id=CVE-2020-25637
A double free memory issue was found to occur in the libvirt API, in versions before 6.8.0, responsible for requesting information about network interfaces of a running QEMU domain. This flaw affects the polkit access control driver. Specifically, clients connecting to the read-write socket with limited ACL permissions could use this flaw to crash the libvirt daemon, resulting in a denial of service, or potentially escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. Se encontró que ocurría un problema de doble liberación de la memoria en la API de libvirt, en versiones anteriores a 6.8.0, responsable de pedir información sobre unas interfaces de red de un dominio QEMU en ejecución. • https://github.com/brahmiboudjema/CVE-2020-25637-libvirt-double-free http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00072.html http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00073.html https://bugzilla.redhat.com/show_bug.cgi?id=1881037 https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html https://security.gentoo.org/glsa/202210-06 https://access.redhat.com/security/cve/CVE-2020-25637 • CWE-415: Double Free •
CVSS: 7.5EPSS: 0%CPEs: 26EXPL: 0CVE-2020-25643 – kernel: improper input validation in ppp_cp_parse_cr function leads to memory corruption and read overflow
https://notcve.org/view.php?id=CVE-2020-25643
A flaw was found in the HDLC_PPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption and a read overflow is caused by improper input validation in the ppp_cp_parse_cr function which can cause the system to crash or cause a denial of service. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. Se encontró un fallo de corrupción de la memoria en el kernel de Linux en versiones anteriores a 5.9-rc7, en el módulo HDLC_PPP en la manera en que recibe paquetes malformados por el protocolo PPP. Un usuario remoto podría usar este fallo para bloquear el sistema o causar una denegación de servicio A flaw was found in the HDLC_PPP module of the Linux kernel. • http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00042.html https://bugzilla.redhat.com/show_bug.cgi?id=1879981 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=66d42ed8b25b64eb63111a2b8582c5afc8bf1105 https://lists.debian.org/debian-lts-announce/2020/10/msg00028.html https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html https://lists.debian.org/debian-lts-announce/ • CWE-20: Improper Input Validation •