CVSS: 6.0EPSS: 0%CPEs: 9EXPL: 0CVE-2020-27171
https://notcve.org/view.php?id=CVE-2020-27171
An issue was discovered in the Linux kernel before 5.11.8. kernel/bpf/verifier.c has an off-by-one error (with a resultant integer underflow) affecting out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory, aka CID-10d2bb2e6b1d. Se detectó un problema en el kernel de Linux versiones anteriores a 5.11.8. El archivo kernel/bpf/verifier.c presenta un error por un paso (con un subdesbordamiento de enteros resultante) afectando la especulación fuera de límites en la aritmética de punteros, conllevando a ataques de canal lateral que anulan las mitigaciones de Spectre y consiguen información confidencial de la memoria del kernel , también se conoce como CID-10d2bb2e6b1d • http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html http://www.openwall.com/lists/oss-security/2021/03/24/5 https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.8 https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/patch/?id=10d2bb2e6b1d8c4576c56a748f697dbeb8388899 https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FB6LUXPEIRLZH • CWE-193: Off-by-one Error •
CVSS: 4.7EPSS: 0%CPEs: 9EXPL: 0CVE-2020-27170 – kernel: Speculation on pointer arithmetic against bpf_context pointer
https://notcve.org/view.php?id=CVE-2020-27170
An issue was discovered in the Linux kernel before 5.11.8. kernel/bpf/verifier.c performs undesirable out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory, aka CID-f232326f6966. This affects pointer types that do not define a ptr_limit. Se detectó un problema en el kernel de Linux versiones anteriores a 5.11.8. El archivo kernel/bpf/verifier.c lleva a cabo especulaciones no deseadas fuera de límites en aritmética de punteros, conllevando a ataques de canal lateral que anulan las mitigaciones de Spectre y consiguen información confidencial de la memoria del kernel, también se conoce como CID-f232326f6966. Esto afecta a los tipos de punteros que no definen un ptr_limit A flaw was found in the Linux kernels eBPF verification code. • http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html http://www.openwall.com/lists/oss-security/2021/03/24/4 https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.8 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f232326f6966cf2a1d1db7bc917a4ce5f9f55f76 https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FB6LU • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-203: Observable Discrepancy •
CVSS: 7.1EPSS: 0%CPEs: 9EXPL: 1CVE-2021-27364 – kernel: out-of-bounds read in libiscsi module
https://notcve.org/view.php?id=CVE-2021-27364
An issue was discovered in the Linux kernel through 5.11.3. drivers/scsi/scsi_transport_iscsi.c is adversely affected by the ability of an unprivileged user to craft Netlink messages. Se detectó un problema en el kernel de Linux versiones hasta 5.11.3. El archivo drivers/scsi/scsi_transport_iscsi.c está afectado negativamente por la capacidad de un usuario sin privilegios de crear mensajes Netlink A flaw was found in the Linux kernel. An out-of-bounds read was discovered in the libiscsi module that could lead to reading kernel memory or a crash. The highest threat from this vulnerability is to data confidentiality as well as system availability. • http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html https://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.html https://bugzilla.suse.com/show_bug.cgi?id=1182717 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=688e8128b7a92df982709a4137ea4588d16f24aa https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html https://security.netapp.com&# • CWE-125: Out-of-bounds Read •
CVSS: 2.8EPSS: 0%CPEs: 10EXPL: 0CVE-2020-27351 – Various memory and file descriptor leaks in apt-python
https://notcve.org/view.php?id=CVE-2020-27351
Various memory and file descriptor leaks were found in apt-python files python/arfile.cc, python/tag.cc, python/tarfile.cc, aka GHSL-2020-170. This issue affects: python-apt 1.1.0~beta1 versions prior to 1.1.0~beta1ubuntu0.16.04.10; 1.6.5ubuntu0 versions prior to 1.6.5ubuntu0.4; 2.0.0ubuntu0 versions prior to 2.0.0ubuntu0.20.04.2; 2.1.3ubuntu1 versions prior to 2.1.3ubuntu1.1; Se encontraron varios filtrados de memoria y descriptores de archivos en los archivos python/arfile.cc, python/tag.cc, python/tarfile.cc, también se conoce como GHSL-2020-170. Este problema afecta a: python-apt versiones 1.1.0~beta1 anteriores a 1.1.0~beta1ubuntu0.16.04.10; versiones 1.6.5ubuntu0 anteriores a 1.6.5ubuntu0.4; versiones 2.0.0ubuntu0 anteriores a 2.0.0ubuntu0.20.04.2; versiones 2.1.3ubuntu1 anteriores a 2.1.3ubuntu1.1; • https://bugs.launchpad.net/bugs/1899193 https://usn.ubuntu.com/usn/usn-4668-1 https://www.debian.org/security/2020/dsa-4809 • CWE-772: Missing Release of Resource after Effective Lifetime •
CVSS: 5.7EPSS: 0%CPEs: 12EXPL: 0CVE-2020-27350 – apt integer wraparound
https://notcve.org/view.php?id=CVE-2020-27350
APT had several integer overflows and underflows while parsing .deb packages, aka GHSL-2020-168 GHSL-2020-169, in files apt-pkg/contrib/extracttar.cc, apt-pkg/deb/debfile.cc, and apt-pkg/contrib/arfile.cc. This issue affects: apt 1.2.32ubuntu0 versions prior to 1.2.32ubuntu0.2; 1.6.12ubuntu0 versions prior to 1.6.12ubuntu0.2; 2.0.2ubuntu0 versions prior to 2.0.2ubuntu0.2; 2.1.10ubuntu0 versions prior to 2.1.10ubuntu0.1; APT tuvo varios desbordamientos y subdesbordamientos de enteros al analizar paquetes .deb, también se conocen como GHSL-2020-168 GHSL-2020-169, en los archivos apt-pkg/contrib/extracttar.cc, apt-pkg/deb/debfile.cc, and apt-pkg/contrib/arfile.cc. Este problema afecta: apt versiones 1.2.32ubuntu0 anteriores a 1.2.32ubuntu0.2; versiones 1.6.12ubuntu0 anteriores a 1.6.12ubuntu0.2; versiones 2.0.2ubuntu0 anteriores a 2.0.2ubuntu0.2; versiones 2.1.10ubuntu0 anteriores a 2.1.10ubuntu0.1; • https://bugs.launchpad.net/bugs/1899193 https://security.netapp.com/advisory/ntap-20210108-0005 https://usn.ubuntu.com/usn/usn-4667-1 https://www.debian.org/security/2020/dsa-4808 • CWE-190: Integer Overflow or Wraparound •