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CVE-2021-40085

openstack-neutron: arbitrary dnsmasq reconfiguration via extra_dhcp_opts

An issue was discovered in OpenStack Neutron before 16.4.1, 17.x before 17.2.1, and 18.x before 18.1.1. Authenticated attackers can reconfigure dnsmasq via a crafted extra_dhcp_opts value.

CVSS 3.1 · 6.5 Medium EPSS 1.9% KEV · Not listed
Vendors
Debian Openstack Redhat
Products
Debian Linux Neutron Openstack
CVE-2021-3930

QEMU: off-by-one error in mode_sense_page() in hw/scsi/scsi-disk.c

An off-by-one error was found in the SCSI device emulation in QEMU. It could occur while processing MODE SELECT commands in mode_sense_page() if the 'page' argument was set to MODE_PAGE_ALLS (0x3f). A malicious guest could use this flaw to potentially crash QEMU, resulting in a denial of service condition.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Debian Qemu Redhat
Products
Debian Linux Qemu Advanced Virtualization and 8 more
CVE-2021-3656

kernel: SVM nested virtualization issue in KVM (VMLOAD/VMSAVE)

A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB (virtual machine control block) provided by the L1 guest to spawn/handle a nested guest (L2). Due to improper validation of the "virt_ext" field, this issue could allow a malicious L1 to disable both VMLOAD/VMSAVE intercepts and VLS (Virtual VMLOAD/VMSAVE) for the L2 guest. As a result, the L2 guest would be allowed to read/write physical pages of the host, resulting in a crash of the entire system, leak of sensitive data or potential guest-to-host escape.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Linux Redhat
Products
Fedora Linux Kernel 3scale Api Management and 28 more
CVE-2021-3654

openstack-nova: novnc allows open redirection

A vulnerability was found in openstack-nova's console proxy, noVNC. By crafting a malicious URL, noVNC could be made to redirect to any desired URL.

CVSS 3.1 · 6.1 Medium EPSS 26.8% KEV · Not listed
Vendors
Openstack Redhat
Products
Nova Openstack Openstack Platform
CVE-2021-3281

django: Potential directory-traversal via archive.extract()

In Django 2.2 before 2.2.18, 3.0 before 3.0.12, and 3.1 before 3.1.6, the django.utils.archive.extract method (used by "startapp --template" and "startproject --template") allows directory traversal via an archive with absolute paths or relative paths with dot segments.

CVSS 3.1 · 5.3 Medium EPSS 7.6% KEV · Not listed
Vendors
Djangoproject Fedoraproject Netapp and 1 more
Products
Django Fedora Snapcenter and 2 more
CVE-2021-34558

golang: crypto/tls: certificate of wrong type is causing TLS client to panic

The crypto/tls package of Go through 1.16.5 does not properly assert that the type of public key in an X.509 certificate matches the expected type when doing a RSA based key exchange, allowing a malicious TLS server to cause a TLS client to panic.

CVSS 3.1 · 6.5 Medium EPSS 7.0% KEV · Not listed
Vendors
Fedoraproject Golang Netapp and 2 more
Products
Fedora Go Cloud Insights Telegraf and 16 more
CVE-2021-33571

django: Possible indeterminate SSRF, RFI, and LFI attacks since validators accepted leading zeros in IPv4 addresses

In Django 2.2 before 2.2.24, 3.x before 3.1.12, and 3.2 before 3.2.4, URLValidator, validate_ipv4_address, and validate_ipv46_address do not prohibit leading zero characters in octal literals. This may allow a bypass of access control that is based on IP addresses. (validate_ipv4_address and validate_ipv46_address are unaffected with Python 3.9.5+..) .

CVSS 3.1 · 7.5 High EPSS 5.3% KEV · Not listed
Vendors
Djangoproject Fedoraproject Redhat
Products
Django Fedora Openstack and 2 more
CVE-2021-33430

numpy: buffer overflow in the PyArray_NewFromDescr_int() in ctors.c

A Buffer Overflow vulnerability exists in NumPy 1.9.x in the PyArray_NewFromDescr_int function of ctors.c when specifying arrays of large dimensions (over 32) from Python code, which could let a malicious user cause a Denial of Service. NOTE: The vendor does not agree this is a vulneraility; In (very limited) circumstances a user may be able provoke the buffer overflow, the user is most likely already privileged to at least provoke denial of service by exhausting memory. Triggering this further requires the use of uncommon API (complicated structured dtypes), which is very unlikely to be available to an unprivileged user

CVSS 3.1 · 5.3 Medium EPSS 1.5% KEV · Not listed
Vendors
Numpy Redhat
Products
Numpy Openstack
CVE-2021-33203

django: Potential directory traversal via ``admindocs``

Django before 2.2.24, 3.x before 3.1.12, and 3.2.x before 3.2.4 has a potential directory traversal via django.contrib.admindocs. Staff members could use the TemplateDetailView view to check the existence of arbitrary files. Additionally, if (and only if) the default admindocs templates have been customized by application developers to also show file contents, then not only the existence but also the file contents would have been exposed. In other words, there is directory traversal outside of the template root directories.

CVSS 3.1 · 4.9 Medium EPSS 2.7% KEV · Not listed
Vendors
Djangoproject Fedoraproject Redhat
Products
Django Fedora Openstack and 2 more
CVE-2021-33197

golang: net/http/httputil: ReverseProxy forwards connection headers if first one is empty

In Go before 1.15.13 and 1.16.x before 1.16.5, some configurations of ReverseProxy (from net/http/httputil) result in a situation where an attacker is able to drop arbitrary headers.

CVSS 3.1 · 5.3 Medium EPSS 2.3% KEV · Not listed
Vendors
Golang Redhat
Products
Go Advanced Cluster Security Container Native Virtualization and 8 more
CVE-2021-33195

golang: net: lookup functions may return invalid host names

Go before 1.15.13 and 1.16.x before 1.16.5 has functions for DNS lookups that do not validate replies from DNS servers, and thus a return value may contain an unsafe injection (e.g., XSS) that does not conform to the RFC1035 format.

CVSS 3.1 · 7.3 High EPSS 3.2% KEV · Not listed
Vendors
Golang Netapp Redhat
Products
Go Cloud Insights Telegraf Agent Advanced Cluster Security and 9 more
CVE-2021-32760

Archive package allows chmod of file outside of unpack target directory

containerd is a container runtime. A bug was found in containerd versions prior to 1.4.8 and 1.5.4 where pulling and extracting a specially-crafted container image can result in Unix file permission changes for existing files in the host’s filesystem. Changes to file permissions can deny access to the expected owner of the file, widen access to others, or set extended bits like setuid, setgid, and sticky. This bug does not directly allow files to be read, modified, or executed without an additional cooperating process. This bug has been fixed in containerd 1.5.4 and 1.4.8. As a workaround, ensure that users only pull images from trusted sources. Linux security modules (LSMs) like SELinux and AppArmor can limit the files potentially affected by this bug through policies and profiles that prevent containerd from interacting with specific files.

CVSS 3.1 · 5 Medium EPSS 1.6% KEV · Not listed
Vendors
Fedoraproject Linuxfoundation Redhat
Products
Fedora Containerd Openstack and 1 more
CVE-2021-32719

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in RabbitMQ federation management plugin

RabbitMQ is a multi-protocol messaging broker. In rabbitmq-server prior to version 3.8.18, when a federation link was displayed in the RabbitMQ management UI via the `rabbitmq_federation_management` plugin, its consumer tag was rendered without proper <script> tag sanitization. This potentially allows for JavaScript code execution in the context of the page. The user must be signed in and have elevated permissions (manage federation upstreams and policies) for this to occur. The vulnerability is patched in RabbitMQ 3.8.18. As a workaround, disable the `rabbitmq_federation_management` plugin and use [CLI tools](https://www.rabbitmq.com/cli.html) instead.

CVSS 3.1 · 3.1 Low EPSS 1.4% KEV · Not listed
Vendors
Redhat Vmware
Products
Openstack Rabbitmq
CVE-2021-32718

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in RabbitMQ management UI

RabbitMQ is a multi-protocol messaging broker. In rabbitmq-server prior to version 3.8.17, a new user being added via management UI could lead to the user's bane being rendered in a confirmation message without proper `<script>` tag sanitization, potentially allowing for JavaScript code execution in the context of the page. In order for this to occur, the user must be signed in and have elevated permissions (other user management). The vulnerability is patched in RabbitMQ 3.8.17. As a workaround, disable `rabbitmq_management` plugin and use CLI tools for management operations and Prometheus and Grafana for metrics and monitoring.

CVSS 3.1 · 3.1 Low EPSS 1.4% KEV · Not listed
Vendors
Redhat Vmware
Products
Openstack Rabbitmq
CVE-2021-32687

Integer overflow issue with intsets in Redis

Redis is an open source, in-memory database that persists on disk. An integer overflow bug affecting all versions of Redis can be exploited to corrupt the heap and potentially be used to leak arbitrary contents of the heap or trigger remote code execution. The vulnerability involves changing the default set-max-intset-entries configuration parameter to a very large value and constructing specially crafted commands to manipulate sets. The problem is fixed in Redis versions 6.2.6, 6.0.16 and 5.0.14. An additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from modifying the set-max-intset-entries configuration parameter. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command.

CVSS 3.1 · 7.5 High EPSS 4.1% KEV · Not listed
Vendors
Debian Fedoraproject Netapp and 3 more
Products
Debian Linux Fedora Management Services For Element Software and 8 more
CVE-2021-32675

DoS vulnerability in Redis

Redis is an open source, in-memory database that persists on disk. When parsing an incoming Redis Standard Protocol (RESP) request, Redis allocates memory according to user-specified values which determine the number of elements (in the multi-bulk header) and size of each element (in the bulk header). An attacker delivering specially crafted requests over multiple connections can cause the server to allocate significant amount of memory. Because the same parsing mechanism is used to handle authentication requests, this vulnerability can also be exploited by unauthenticated users. The problem is fixed in Redis versions 6.2.6, 6.0.16 and 5.0.14. An additional workaround to mitigate this problem without patching the redis-server executable is to block access to prevent unauthenticated users from connecting to Redis. This can be done in different ways: Using network access control tools like firewalls, iptables, security groups, etc. or Enabling TLS and requiring users to authenticate using client side certificates.

CVSS 3.1 · 7.5 High EPSS 16.1% KEV · Not listed
Vendors
Debian Fedoraproject Netapp and 3 more
Products
Debian Linux Fedora Management Services For Element Software and 8 more
CVE-2021-32628

Vulnerability in handling large ziplists

Redis is an open source, in-memory database that persists on disk. An integer overflow bug in the ziplist data structure used by all versions of Redis can be exploited to corrupt the heap and potentially result with remote code execution. The vulnerability involves modifying the default ziplist configuration parameters (hash-max-ziplist-entries, hash-max-ziplist-value, zset-max-ziplist-entries or zset-max-ziplist-value) to a very large value, and then constructing specially crafted commands to create very large ziplists. The problem is fixed in Redis versions 6.2.6, 6.0.16, 5.0.14. An additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from modifying the above configuration parameters. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command.

CVSS 3.1 · 7.5 High EPSS 13.0% KEV · Not listed
Vendors
Debian Fedoraproject Netapp and 3 more
Products
Debian Linux Fedora Management Services For Element Software and 8 more
CVE-2021-32627

Integer overflow issue with Streams in Redis

Redis is an open source, in-memory database that persists on disk. In affected versions an integer overflow bug in Redis can be exploited to corrupt the heap and potentially result with remote code execution. The vulnerability involves changing the default proto-max-bulk-len and client-query-buffer-limit configuration parameters to very large values and constructing specially crafted very large stream elements. The problem is fixed in Redis 6.2.6, 6.0.16 and 5.0.14. For users unable to upgrade an additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from modifying the proto-max-bulk-len configuration parameter. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command.

CVSS 3.1 · 7.5 High EPSS 3.8% KEV · Not listed
Vendors
Debian Fedoraproject Netapp and 3 more
Products
Debian Linux Fedora Management Services For Element Software and 8 more
CVE-2021-32626

Lua scripts can overflow the heap-based Lua stack in Redis

Redis is an open source, in-memory database that persists on disk. In affected versions specially crafted Lua scripts executing in Redis can cause the heap-based Lua stack to be overflowed, due to incomplete checks for this condition. This can result with heap corruption and potentially remote code execution. This problem exists in all versions of Redis with Lua scripting support, starting from 2.6. The problem is fixed in versions 6.2.6, 6.0.16 and 5.0.14. For users unable to update an additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from executing Lua scripts. This can be done using ACL to restrict EVAL and EVALSHA commands.

CVSS 3.1 · 7.5 High EPSS 15.6% KEV · Not listed
Vendors
Debian Fedoraproject Netapp and 3 more
Products
Debian Linux Fedora Management Services For Element Software and 8 more