An update of the falco package has been released.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:1792-1 advisory.

  - 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.
    (CVE-2023-24534)

  - 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=. (CVE-2023-24536)

  - Calling any of the Parse functions on Go source code which contains //line directives with very large line     numbers can cause an infinite loop due to integer overflow. (CVE-2023-24537)

  - 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. (CVE-2023-24538)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:2105-1 advisory.

  - 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.
    (CVE-2023-24534)

  - 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=. (CVE-2023-24536)

  - Calling any of the Parse functions on Go source code which contains //line directives with very large line     numbers can cause an infinite loop due to integer overflow. (CVE-2023-24537)

  - 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. (CVE-2023-24538)

  - 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. (CVE-2023-24539)

  - Not all valid JavaScript whitespace characters are considered to be whitespace. Templates containing     whitespace characters outside of the character set \t \f\r\u0020\u2028\u2029 in JavaScript contexts     that also contain actions may not be properly sanitized during execution. (CVE-2023-24540)

  - 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. (CVE-2023-29400)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of golang installed on the remote host is prior to 1.20.8-1.47. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2023-1848 advisory.

  - 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. (CVE-2022-41717)

  - A path traversal vulnerability exists in filepath.Clean on Windows. On Windows, the filepath.Clean     function could transform an invalid path such as a/../c:/b into the valid path c:\b. This     transformation of a relative (if invalid) path into an absolute path could enable a directory traversal     attack. After fix, the filepath.Clean function transforms this path into the relative (but still invalid)     path .\c:\b. (CVE-2022-41722)

  - Large handshake records may cause panics in crypto/tls. Both clients and servers may send large TLS     handshake records which cause servers and clients, respectively, to panic when attempting to construct     responses. This affects all TLS 1.3 clients, TLS 1.2 clients which explicitly enable session resumption     (by setting Config.ClientSessionCache to a non-nil value), and TLS 1.3 servers which request client     certificates (by setting Config.ClientAuth >= RequestClientCert). (CVE-2022-41724)

  - A denial of service is possible from excessive resource consumption in net/http and mime/multipart.
    Multipart form parsing with mime/multipart.Reader.ReadForm can consume largely unlimited amounts of memory     and disk files. This also affects form parsing in the net/http package with the Request methods FormFile,     FormValue, ParseMultipartForm, and PostFormValue. ReadForm takes a maxMemory parameter, and is documented     as storing up to maxMemory bytes +10MB (reserved for non-file parts) in memory. File parts which cannot     be stored in memory are stored on disk in temporary files. The unconfigurable 10MB reserved for non-file     parts is excessively large and can potentially open a denial of service vector on its own. However,     ReadForm did not properly account for all memory consumed by a parsed form, such as map entry overhead,     part names, and MIME headers, permitting a maliciously crafted form to consume well over 10MB. In     addition, ReadForm contained no limit on the number of disk files created, permitting a relatively small     request body to create a large number of disk temporary files. With fix, ReadForm now properly accounts     for various forms of memory overhead, and should now stay within its documented limit of 10MB + maxMemory     bytes of memory consumption. Users should still be aware that this limit is high and may still be     hazardous. In addition, ReadForm now creates at most one on-disk temporary file, combining multiple form     parts into a single temporary file. The mime/multipart.File interface type's documentation states, If     stored on disk, the File's underlying concrete type will be an *os.File.. This is no longer the case when     a form contains more than one file part, due to this coalescing of parts into a single file. The previous     behavior of using distinct files for each form part may be reenabled with the environment variable     GODEBUG=multipartfiles=distinct. Users should be aware that multipart.ReadForm and the http.Request     methods that call it do not limit the amount of disk consumed by temporary files. Callers can limit the     size of form data with http.MaxBytesReader. (CVE-2022-41725)

  - The ScalarMult and ScalarBaseMult methods of the P256 Curve may return an incorrect result if called with     some specific unreduced scalars (a scalar larger than the order of the curve). This does not impact usages     of crypto/ecdsa or crypto/ecdh. (CVE-2023-24532)

  - Calling any of the Parse functions on Go source code which contains //line directives with very large line     numbers can cause an infinite loop due to integer overflow. (CVE-2023-24537)

  - 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. (CVE-2023-24538)

  - Not all valid JavaScript whitespace characters are considered to be whitespace. Templates containing     whitespace characters outside of the character set \t\n\f\r\u0020\u2028\u2029 in JavaScript contexts     that also contain actions may not be properly sanitized during execution. (CVE-2023-24540)

  - 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. (CVE-2023-29400)

  - On Unix platforms, the Go runtime does not behave differently when a binary is run with the setuid/setgid     bits. This can be dangerous in certain cases, such as when dumping memory state, or assuming the status of     standard i/o file descriptors. If a setuid/setgid binary is executed with standard I/O file descriptors     closed, opening any files can result in unexpected content being read or written with elevated privileges.
    Similarly, if a setuid/setgid program is terminated, either via panic or signal, it may leak the contents     of its registers. (CVE-2023-29403)

  - The go command may execute arbitrary code at build time when using cgo. This may occur when running go     get on a malicious module, or when running any other command which builds untrusted code. This is can by     triggered by linker flags, specified via a #cgo LDFLAGS directive. The arguments for a number of flags     which are non-optional are incorrectly considered optional, allowing disallowed flags to be smuggled     through the LDFLAGS sanitization. This affects usage of both the gc and gccgo compilers. (CVE-2023-29404)

  - The go command may execute arbitrary code at build time when using cgo. This may occur when running go     get on a malicious module, or when running any other command which builds untrusted code. This is can by     triggered by linker flags, specified via a #cgo LDFLAGS directive. Flags containing embedded spaces are     mishandled, allowing disallowed flags to be smuggled through the LDFLAGS sanitization by including them in     the argument of another flag. This only affects usage of the gccgo compiler. (CVE-2023-29405)

  - 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. (CVE-2023-29406)

  - 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. (CVE-2023-29409)

  - The html/template package does not apply the proper rules for handling occurrences of <script, <!--,     and </script within JS literals in <script> contexts. This may cause the template parser to improperly     consider script contexts to be terminated early, causing actions to be improperly escaped. This could be     leveraged to perform an XSS attack. (CVE-2023-39319)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:6939 advisory.

  - go-yaml: Improve heuristics preventing CPU/memory abuse by parsing malicious or large YAML documents     (CVE-2022-3064)

  - net/http, golang.org/x/net/http2: avoid quadratic complexity in HPACK decoding (CVE-2022-41723)

  - golang: crypto/tls: large handshake records may cause panics (CVE-2022-41724)

  - golang: net/http, mime/multipart: denial of service from excessive resource consumption (CVE-2022-41725)

  - golang.org/x/net/html: Cross site scripting (CVE-2023-3978)

  - golang: net/http, net/textproto: denial of service from excessive memory allocation (CVE-2023-24534)

  - golang: net/http, net/textproto, mime/multipart: denial of service from excessive resource consumption     (CVE-2023-24536)

  - golang: go/parser: Infinite loop in parsing (CVE-2023-24537)

  - golang: html/template: backticks not treated as string delimiters (CVE-2023-24538)

  - golang: html/template: improper sanitization of CSS values (CVE-2023-24539)

  - golang: html/template: improper handling of JavaScript whitespace (CVE-2023-24540)

  - containerd: Supplementary groups are not set up properly (CVE-2023-25173)

  - runc: Rootless runc makes `/sys/fs/cgroup` writable (CVE-2023-25809)

  - runc: volume mount race condition (regression of CVE-2019-19921) (CVE-2023-27561)

  - runc: AppArmor can be bypassed when `/proc` inside the container is symlinked with a specific mount     configuration (CVE-2023-28642)

  - golang: html/template: improper handling of empty HTML attributes (CVE-2023-29400)

  - golang: net/http: insufficient sanitization of Host header (CVE-2023-29406)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2023:5964 advisory.

    Collectd plugin for gathering resource usage statistics from containers     created with the libpod library.

    Security Fix(es):

    * golang: net/http, x/net/http2: rapid stream resets can cause excessive work (CVE-2023-44487)     (CVE-2023-39325)

    * HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack)     (CVE-2023-44487)

    * golang: crypto/tls: large handshake records may cause panics (CVE-2022-41724)

    * golang: net/http, mime/multipart: denial of service from excessive resource consumption (CVE-2022-41725)

    * golang: net/http, net/textproto: denial of service from excessive memory allocation (CVE-2023-24534)

    * golang: net/http, net/textproto, mime/multipart: denial of service from excessive resource consumption     (CVE-2023-24536)

    * golang: go/parser: Infinite loop in parsing (CVE-2023-24537)

    * golang: html/template: backticks not treated as string delimiters (CVE-2023-24538)

    * golang: crypto/tls: slow verification of certificate chains containing large RSA keys (CVE-2023-29409)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

An update of the kubernetes package has been released.

ID	Name	Product	Family	Published	Updated	Severity
203948	Photon OS 3.0: Falco PHSA-2023-3.0-0611	Nessus	PhotonOS Local Security Checks	7/24/2024	7/24/2024	critical
204254	Photon OS 5.0: Falco PHSA-2023-5.0-0046	Nessus	PhotonOS Local Security Checks	7/24/2024	7/29/2024	critical
174013	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : go1.19 (SUSE-SU-2023:1792-1)	Nessus	SuSE Local Security Checks	4/7/2023	7/14/2023	critical
175158	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : go1.20 (SUSE-SU-2023:2105-1)	Nessus	SuSE Local Security Checks	5/6/2023	12/8/2023	critical
182699	Amazon Linux AMI : golang (ALAS-2023-1848)	Nessus	Amazon Linux Local Security Checks	10/6/2023	1/8/2024	critical
185675	RHEL 8 : container-tools:rhel8 (RHSA-2023:6939)	Nessus	Red Hat Local Security Checks	11/14/2023	4/28/2024	critical
194255	RHEL 8 : Red Hat OpenStack Platform 16.2.5 (collectd-libpod-stats) (RHSA-2023:5964)	Nessus	Red Hat Local Security Checks	4/28/2024	6/3/2024	critical
204171	Photon OS 5.0: Kubernetes PHSA-2023-5.0-0043	Nessus	PhotonOS Local Security Checks	7/24/2024	7/24/2024	critical

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