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CVE-2023-30861

Flask vulnerable to possible disclosure of permanent session cookie due to missing Vary: Cookie header

Flask is a lightweight WSGI web application framework. When all of the following conditions are met, a response containing data intended for one client may be cached and subsequently sent by the proxy to other clients. If the proxy also caches `Set-Cookie` headers, it may send one client's `session` cookie to other clients. The severity depends on the application's use of the session and the proxy's behavior regarding cookies. The risk depends on all these conditions being met. 1. The application must be hosted behind a caching proxy that does not strip cookies or ignore responses with cookies. 2. The application sets `session.permanent = True` 3. The application does not access or modify the session at any point during a request. 4. `SESSION_REFRESH_EACH_REQUEST` enabled (the default). 5. The application does not set a `Cache-Control` header to indicate that a page is private or should not be cached. This happens because vulnerable versions of Flask only set the `Vary: Cookie` header when the session is accessed or modified, not when it is refreshed (re-sent to update the expiration) without being accessed or modified. This issue has been fixed in versions 2.3.2 and 2.2.5.

CVSS 3.1 · 7.5 High EPSS 1.2% KEV · Not listed
Vendors
Palletsprojects Redhat
Products
Flask Openshift Ironic Openstack and 2 more
CVE-2023-29409

Large RSA keys can cause high CPU usage in crypto/tls

Extremely large RSA keys in certificate chains can cause a client/server to expend significant CPU time verifying signatures. With fix, the size of RSA keys transmitted during handshakes is restricted to <= 8192 bits. Based on a survey of publicly trusted RSA keys, there are currently only three certificates in circulation with keys larger than this, and all three appear to be test certificates that are not actively deployed. It is possible there are larger keys in use in private PKIs, but we target the web PKI, so causing breakage here in the interests of increasing the default safety of users of crypto/tls seems reasonable.

CVSS 3.1 · 5.3 Medium EPSS 1.6% KEV · Not listed
Vendors
Golang Redhat
Products
Go Ansible Automation Platform Cert Manager and 17 more
CVE-2023-29406

Insufficient sanitization of Host header in net/http

The HTTP/1 client does not fully validate the contents of the Host header. A maliciously crafted Host header can inject additional headers or entire requests. With fix, the HTTP/1 client now refuses to send requests containing an invalid Request.Host or Request.URL.Host value.

CVSS 3.1 · 6.5 Medium EPSS 1.5% KEV · Not listed
Vendors
Golang Redhat
Products
Go Advanced Cluster Security Cryostat and 16 more
CVE-2023-2680

Dma reentrancy issue (incomplete fix for cve-2021-3750)

This CVE exists because of an incomplete fix for CVE-2021-3750. More specifically, the qemu-kvm package as released for Red Hat Enterprise Linux 9.1 via RHSA-2022:7967 included a version of qemu-kvm that was actually missing the fix for CVE-2021-3750.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Qemu Redhat
Products
Qemu Advanced Virtualization Enterprise Linux and 1 more
CVE-2023-24538

Backticks not treated as string delimiters in html/template

Templates do not properly consider backticks (`) as Javascript string delimiters, and do not escape them as expected. Backticks are used, since ES6, for JS template literals. If a template contains a Go template action within a Javascript template literal, the contents of the action can be used to terminate the literal, injecting arbitrary Javascript code into the Go template. As ES6 template literals are rather complex, and themselves can do string interpolation, the decision was made to simply disallow Go template actions from being used inside of them (e.g. "var a = {{.}}"), since there is no obviously safe way to allow this behavior. This takes the same approach as github.com/google/safehtml. With fix, Template.Parse returns an Error when it encounters templates like this, with an ErrorCode of value 12. This ErrorCode is currently unexported, but will be exported in the release of Go 1.21. Users who rely on the previous behavior can re-enable it using the GODEBUG flag jstmpllitinterp=1, with the caveat that backticks will now be escaped. This should be used with caution.

CVSS 3.1 · 9.8 Critical EPSS 2.3% KEV · Not listed
Vendors
Golang Redhat
Products
Go Advanced Cluster Security Ansible Automation Platform and 18 more
CVE-2023-24536

Excessive resource consumption in net/http, net/textproto and mime/multipart

Multipart form parsing can consume large amounts of CPU and memory when processing form inputs containing very large numbers of parts. This stems from several causes: 1. mime/multipart.Reader.ReadForm limits the total memory a parsed multipart form can consume. ReadForm can undercount the amount of memory consumed, leading it to accept larger inputs than intended. 2. Limiting total memory does not account for increased pressure on the garbage collector from large numbers of small allocations in forms with many parts. 3. ReadForm can allocate a large number of short-lived buffers, further increasing pressure on the garbage collector. The combination of these factors can permit an attacker to cause an program that parses multipart forms to consume large amounts of CPU and memory, potentially resulting in a denial of service. This affects programs that use mime/multipart.Reader.ReadForm, as well as form parsing in the net/http package with the Request methods FormFile, FormValue, ParseMultipartForm, and PostFormValue. With fix, ReadForm now does a better job of estimating the memory consumption of parsed forms, and performs many fewer short-lived allocations. In addition, the fixed mime/multipart.Reader imposes the following limits on the size of parsed forms: 1. Forms parsed with ReadForm may contain no more than 1000 parts. This limit may be adjusted with the environment variable GODEBUG=multipartmaxparts=. 2. Form parts parsed with NextPart and NextRawPart may contain no more than 10,000 header fields. In addition, forms parsed with ReadForm may contain no more than 10,000 header fields across all parts. This limit may be adjusted with the environment variable GODEBUG=multipartmaxheaders=.

CVSS 3.1 · 7.5 High EPSS 1.5% KEV · Not listed
Vendors
Golang Redhat
Products
Go Advanced Cluster Security Ansible Automation Platform and 16 more
CVE-2023-24534

Excessive memory allocation in net/http and net/textproto

HTTP and MIME header parsing can allocate large amounts of memory, even when parsing small inputs, potentially leading to a denial of service. Certain unusual patterns of input data can cause the common function used to parse HTTP and MIME headers to allocate substantially more memory than required to hold the parsed headers. An attacker can exploit this behavior to cause an HTTP server to allocate large amounts of memory from a small request, potentially leading to memory exhaustion and a denial of service. With fix, header parsing now correctly allocates only the memory required to hold parsed headers.

CVSS 3.1 · 7.5 High EPSS 1.9% KEV · Not listed
Vendors
Golang Redhat
Products
Go Advanced Cluster Security Ansible Automation Platform and 19 more
CVE-2022-41717

Excessive memory growth in net/http and golang.org/x/net/http2

An attacker can cause excessive memory growth in a Go server accepting HTTP/2 requests. HTTP/2 server connections contain a cache of HTTP header keys sent by the client. While the total number of entries in this cache is capped, an attacker sending very large keys can cause the server to allocate approximately 64 MiB per open connection.

CVSS 3.1 · 5.3 Medium EPSS 6.2% KEV · Not listed
Vendors
Fedoraproject Golang Redhat
Products
Fedora Go Http2 and 22 more
CVE-2022-41715

Memory exhaustion when compiling regular expressions in regexp/syntax

Programs which compile regular expressions from untrusted sources may be vulnerable to memory exhaustion or denial of service. The parsed regexp representation is linear in the size of the input, but in some cases the constant factor can be as high as 40,000, making relatively small regexps consume much larger amounts of memory. After fix, each regexp being parsed is limited to a 256 MB memory footprint. Regular expressions whose representation would use more space than that are rejected. Normal use of regular expressions is unaffected.

CVSS 3.1 · 7.5 High EPSS 1.7% KEV · Not listed
Vendors
Golang Redhat
Products
Go Acm Ceph Storage and 21 more
CVE-2022-2880

Incorrect sanitization of forwarded query parameters in net/http/httputil

Requests forwarded by ReverseProxy include the raw query parameters from the inbound request, including unparsable parameters rejected by net/http. This could permit query parameter smuggling when a Go proxy forwards a parameter with an unparsable value. After fix, ReverseProxy sanitizes the query parameters in the forwarded query when the outbound request's Form field is set after the ReverseProxy. Director function returns, indicating that the proxy has parsed the query parameters. Proxies which do not parse query parameters continue to forward the original query parameters unchanged.

CVSS 3.1 · 7.5 High EPSS 1.4% KEV · Not listed
Vendors
Golang Redhat
Products
Go Acm Ceph Storage and 17 more
CVE-2022-2879

Unbounded memory consumption when reading headers in archive/tar

Reader.Read does not set a limit on the maximum size of file headers. A maliciously crafted archive could cause Read to allocate unbounded amounts of memory, potentially causing resource exhaustion or panics. After fix, Reader.Read limits the maximum size of header blocks to 1 MiB.

CVSS 3.1 · 7.5 High EPSS 2.0% KEV · Not listed
Vendors
Golang Redhat
Products
Go Container Native Virtualization Devtools and 13 more
CVE-2022-28346

Django: SQL injection in QuerySet.annotate(),aggregate() and extra()

An issue was discovered in Django 2.2 before 2.2.28, 3.2 before 3.2.13, and 4.0 before 4.0.4. QuerySet.annotate(), aggregate(), and extra() methods are subject to SQL injection in column aliases via a crafted dictionary (with dictionary expansion) as the passed **kwargs.

CVSS 3.1 · 9.8 Critical EPSS 18.7% KEV · Not listed
Vendors
Debian Djangoproject Redhat
Products
Debian Linux Django Ansible Automation Platform and 4 more
CVE-2021-3620

Ansible: ansible-connection module discloses sensitive info in traceback error message

A flaw was found in Ansible Engine's ansible-connection module, where sensitive information such as the Ansible user credentials is disclosed by default in the traceback error message. The highest threat from this vulnerability is to confidentiality.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Ansible Automation Platform Ansible Automation Platform Early Access Ansible Engine and 9 more
CVE-2021-3563

Keystone: Verification of application credentials is silently length-limited

A flaw was found in openstack-keystone. Only the first 72 characters of an application secret are verified allowing attackers bypass some password complexity which administrators may be counting on. The highest threat from this vulnerability is to data confidentiality and integrity.

CVSS 3.1 · 7.4 High EPSS 2.0% KEV · Not listed
Vendors
Debian Openstack Redhat
Products
Debian Linux Keystone Openstack Platform
CVE-2023-32082

etcd key name can be accessed via LeaseTimeToLive API

etcd is a distributed key-value store for the data of a distributed system. Prior to versions 3.4.26 and 3.5.9, the LeaseTimeToLive API allows access to key names (not value) associated to a lease when `Keys` parameter is true, even a user doesn't have read permission to the keys. The impact is limited to a cluster which enables auth (RBAC). Versions 3.4.26 and 3.5.9 fix this issue. There are no known workarounds.

CVSS 3.1 · 3.1 Low EPSS < 1% KEV · Not listed
Vendors
Etcd Redhat
Products
Etcd Openstack
CVE-2023-29400

Improper handling of empty HTML attributes in html/template

Templates containing actions in unquoted HTML attributes (e.g. "attr={{.}}") executed with empty input can result in output with unexpected results when parsed due to HTML normalization rules. This may allow injection of arbitrary attributes into tags.

CVSS 3.1 · 7.3 High EPSS 1.0% KEV · Not listed
Vendors
Golang Redhat
Products
Go Acm Advanced Cluster Security and 19 more
CVE-2023-24539

Improper sanitization of CSS values in html/template

Angle brackets (<>) are not considered dangerous characters when inserted into CSS contexts. Templates containing multiple actions separated by a '/' character can result in unexpectedly closing the CSS context and allowing for injection of unexpected HTML, if executed with untrusted input.

CVSS 3.1 · 7.3 High EPSS 1.0% KEV · Not listed
Vendors
Golang Redhat
Products
Go Acm Advanced Cluster Security and 19 more
CVE-2019-9515

Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service

Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service. The attacker sends a stream of SETTINGS frames to the peer. Since the RFC requires that the peer reply with one acknowledgement per SETTINGS frame, an empty SETTINGS frame is almost equivalent in behavior to a ping. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.

CVSS 3.1 · 7.5 High EPSS 87.3% KEV · Not listed
Vendors
Apache Apple Canonical and 9 more
Products
Traffic Server Mac Os X Swiftnio and 33 more
CVE-2019-9514

Some HTTP/2 implementations are vulnerable to a reset flood, potentially leading to a denial of service

Some HTTP/2 implementations are vulnerable to a reset flood, potentially leading to a denial of service. The attacker opens a number of streams and sends an invalid request over each stream that should solicit a stream of RST_STREAM frames from the peer. Depending on how the peer queues the RST_STREAM frames, this can consume excess memory, CPU, or both.

CVSS 3.1 · 7.5 High EPSS 82.8% KEV · Not listed
Vendors
Apache Apple Canonical and 10 more
Products
Traffic Server Mac Os X Swiftnio and 41 more