A flaw was found in crun where containers were incorrectly started with non-empty default permissions. A vulnerability was found in Moby (Docker Engine) where containers were started incorrectly with non-empty inheritable Linux process capabilities. This flaw allows an attacker with access to programs with inheritable file capabilities to elevate those capabilities to the permitted set when execve(2) runs.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A flaw was found in crun where containers were incorrectly started with non-empty default permissions. A     vulnerability was found in Moby (Docker Engine) where containers were started incorrectly with non-empty     inheritable Linux process capabilities. This flaw allows an attacker with access to programs with     inheritable file capabilities to elevate those capabilities to the permitted set when execve(2) runs.
    (CVE-2022-27650)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2024:0050 advisory.

    Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

    CVE-2022-27191:
    The golang.org/x/crypto/ssh package before 0.0.0-20220314234659-1baeb1ce4c0b for Go allows an attacker to     crash a server in certain circumstances involving AddHostKey.

    CVE-2022-2989:
    An incorrect handling of the supplementary groups in the Podman container engine might lead to the     sensitive information disclosure or possible data modification if an attacker has direct access to the     affected container where supplementary groups are used to set access permissions and is able to execute a     binary code in that container.

    CVE-2022-3064:
    Parsing malicious or large YAML documents can consume excessive amounts of CPU or memory.

    CVE-2022-41723:
    A maliciously crafted HTTP/2 stream could cause excessive CPU consumption in the HPACK decoder, sufficient     to cause a denial of service from a small number of small requests.

    CVE-2022-41724:
    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-2022-41725:
    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-2023-24534:
    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-2023-24536:
    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-2023-24537:
    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-2023-24538:
    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-2023-24539:
    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-2023-24540:
    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-2023-25173:
    containerd is an open source container runtime. A bug was found in containerd prior to versions 1.6.18 and     1.5.18 where supplementary groups are not set up properly inside a container. If an attacker has direct     access to a container and manipulates their supplementary group access, they may be able to use     supplementary group access to bypass primary group restrictions in some cases, potentially gaining access     to sensitive information or gaining the ability to execute code in that container. Downstream applications     that use the containerd client library may be affected as well.
    This bug has been fixed in containerd v1.6.18 and v.1.5.18. Users should update to these versions and     recreate containers to resolve this issue. Users who rely on a downstream application that uses     containerd's client library should check that application for a separate advisory and instructions. As a     workaround, ensure that the `USER $USERNAME` Dockerfile instruction is not used. Instead, set the     container entrypoint to a value similar to `ENTRYPOINT [su, -, user]` to allow `su` to properly set     up supplementary groups.

    CVE-2023-25809:
    runc is a CLI tool for spawning and running containers according to the OCI specification. In affected     versions it was found that rootless runc makes `/sys/fs/cgroup` writable in following conditons: 1. when     runc is executed inside the user namespace, and the `config.json` does not specify the cgroup namespace to     be unshared (e.g.., `(docker|podman|nerdctl) run --cgroupns=host`, with Rootless Docker/Podman/nerdctl) or     2. when runc is executed outside the user namespace, and `/sys` is mounted with `rbind, ro` (e.g., `runc     spec --rootless`; this condition is very rare). A container may gain the write access to user-owned cgroup     hierarchy `/sys/fs/cgroup/user.slice/...` on the host . Other users's cgroup hierarchies are not affected.
    Users are advised to upgrade to version 1.1.5. Users unable to upgrade may unshare the cgroup namespace     (`(docker|podman|nerdctl) run --cgroupns=private)`. This is the default behavior of Docker/Podman/nerdctl     on cgroup v2 hosts. or add `/sys/fs/cgroup` to `maskedPaths`.

    CVE-2023-27561:
    runc through 1.1.4 has Incorrect Access Control leading to Escalation of Privileges, related to     libcontainer/rootfs_linux.go. To exploit this, an attacker must be able to spawn two containers with     custom volume-mount configurations, and be able to run custom images. NOTE: this issue exists because of a     CVE-2019-19921 regression.

    CVE-2023-28642:
    runc is a CLI tool for spawning and running containers according to the OCI specification. It was found     that AppArmor can be bypassed when `/proc` inside the container is symlinked with a specific mount     configuration. This issue has been fixed in runc version 1.1.5, by prohibiting symlinked `/proc`. See PR     #3785 for details. users are advised to upgrade. Users unable to upgrade should avoid using an untrusted     container image.

    CVE-2023-29400:
    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-2023-29406:
    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-2023-3978:
    Text nodes not in the HTML namespace are incorrectly literally rendered, causing text which should be     escaped to not be. This could lead to an XSS attack.

    CVE-2022-1227:
    A privilege escalation flaw was found in Podman. This flaw allows an attacker to publish a malicious image     to a public registry. Once this image is downloaded by a potential victim, the vulnerability is triggered     after a user runs the 'podman top' command. This action gives the attacker access to the host filesystem,     leading to information disclosure or denial of service.

    CVE-2022-21698:
    client_golang is the instrumentation library for Go applications in Prometheus, and the promhttp package     in client_golang provides tooling around HTTP servers and clients. In client_golang prior to version     1.11.1, HTTP server is susceptible to a Denial of Service through unbounded cardinality, and potential     memory exhaustion, when handling requests with non-standard HTTP methods. In order to be affected, an     instrumented software must use any of `promhttp.InstrumentHandler*` middleware except `RequestsInFlight`;
    not filter any specific methods (e.g GET) before middleware; pass metric with `method` label name to our     middleware; and not have any firewall/LB/proxy that filters away requests with unknown `method`.
    client_golang version 1.11.1 contains a patch for this issue. Several workarounds are available, including     removing the `method` label name from counter/gauge used in the InstrumentHandler; turning off affected     promhttp handlers; adding custom middleware before promhttp handler that will sanitize the request method     given by Go http.Request; and using a reverse proxy or web application firewall, configured to only allow     a limited set of methods.

    CVE-2022-27650:
    A flaw was found in crun where containers were incorrectly started with non-empty default permissions. A     vulnerability was found in Moby (Docker Engine) where containers were started incorrectly with non-empty     inheritable Linux process capabilities. This flaw allows an attacker with access to programs with     inheritable file capabilities to elevate those capabilities to the permitted set when execve(2) runs.

    CVE-2024-21626:
    runc is a CLI tool for spawning and running containers on Linux according to the OCI specification. In     runc 1.1.11 and earlier, due to an internal file descriptor leak, an attacker could cause a newly-spawned     container process (from runc exec) to have a working directory in the host filesystem namespace, allowing     for a container escape by giving access to the host filesystem (attack 2). The same attack could be used     by a malicious image to allow a container process to gain access to the host filesystem through runc run     (attack 1). Variants of attacks 1 and 2 could be also be used to overwrite semi-arbitrary host binaries,     allowing for complete container escapes (attack 3a and attack 3b). runc 1.1.12 includes patches for     this issue.

Tenable has extracted the preceding description block directly from the Alibaba Cloud 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.

The remote Rocky Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2022:1793 advisory.

  - A flaw was found in crun where containers were incorrectly started with non-empty default permissions. A     vulnerability was found in Moby (Docker Engine) where containers were started incorrectly with non-empty     inheritable Linux process capabilities. This flaw allows an attacker with access to programs with     inheritable file capabilities to elevate those capabilities to the permitted set when execve(2) runs.
    (CVE-2022-27650)

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

The remote Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2022:1762 advisory.

  - A privilege escalation flaw was found in Podman. This flaw allows an attacker to publish a malicious image     to a public registry. Once this image is downloaded by a potential victim, the vulnerability is triggered     after a user runs the 'podman top' command. This action gives the attacker access to the host filesystem,     leading to information disclosure or denial of service. (CVE-2022-1227)

  - client_golang is the instrumentation library for Go applications in Prometheus, and the promhttp package     in client_golang provides tooling around HTTP servers and clients. In client_golang prior to version     1.11.1, HTTP server is susceptible to a Denial of Service through unbounded cardinality, and potential     memory exhaustion, when handling requests with non-standard HTTP methods. In order to be affected, an     instrumented software must use any of `promhttp.InstrumentHandler*` middleware except `RequestsInFlight`;
    not filter any specific methods (e.g GET) before middleware; pass metric with `method` label name to our     middleware; and not have any firewall/LB/proxy that filters away requests with unknown `method`.
    client_golang version 1.11.1 contains a patch for this issue. Several workarounds are available, including     removing the `method` label name from counter/gauge used in the InstrumentHandler; turning off affected     promhttp handlers; adding custom middleware before promhttp handler that will sanitize the request method     given by Go http.Request; and using a reverse proxy or web application firewall, configured to only allow     a limited set of methods. (CVE-2022-21698)

  - A flaw was found in Podman, where containers were started incorrectly with non-empty default permissions.
    A vulnerability was found in Moby (Docker Engine), where containers were started incorrectly with non-     empty inheritable Linux process capabilities. This flaw allows an attacker with access to programs with     inheritable file capabilities to elevate those capabilities to the permitted set when execve(2) runs.
    (CVE-2022-27649)

  - A flaw was found in crun where containers were incorrectly started with non-empty default permissions. A     vulnerability was found in Moby (Docker Engine) where containers were started incorrectly with non-empty     inheritable Linux process capabilities. This flaw allows an attacker with access to programs with     inheritable file capabilities to elevate those capabilities to the permitted set when execve(2) runs.
    (CVE-2022-27650)

  - A flaw was found in buildah where containers were incorrectly started with non-empty default permissions.
    A bug was found in Moby (Docker Engine) where containers were incorrectly started with non-empty     inheritable Linux process capabilities, enabling an attacker with access to programs with inheritable file     capabilities to elevate those capabilities to the permitted set when execve(2) runs. This has the     potential to impact confidentiality and integrity. (CVE-2022-27651)

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

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2022-1793 advisory.

    - fix CVE-2022-27650

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

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

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2022-1762 advisory.

    - switch to RHEL maintenance branch which fixes CVE-2022-27651
    - Fix CVE-2021-3592 CVE-2021-3593 CVE-2021-3594 CVE-2021-3595 out-of-bounds access
    - fix CVE-2022-21698

Tenable has extracted the preceding description block directly from the Oracle 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.

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2022:1793 advisory.

    * crun: Default inheritable capabilities for linux container should be empty (CVE-2022-27650)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

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

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2022:1762 advisory.

    * psgo: Privilege escalation in 'podman top' (CVE-2022-1227)

    * prometheus/client_golang: Denial of service using InstrumentHandlerCounter (CVE-2022-21698)

    * podman: Default inheritable capabilities for linux container should be empty (CVE-2022-27649)

    * crun: Default inheritable capabilities for linux container should be empty (CVE-2022-27650)

    * buildah: Default inheritable capabilities for linux container should be empty (CVE-2022-27651)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

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-2022:1762 advisory.

    The container-tools module contains tools for working with containers, notably podman, buildah, skopeo,     and runc.

    Security Fix(es):

    * psgo: Privilege escalation in 'podman top' (CVE-2022-1227)

    * prometheus/client_golang: Denial of service using InstrumentHandlerCounter (CVE-2022-21698)

    * podman: Default inheritable capabilities for linux container should be empty (CVE-2022-27649)

    * crun: Default inheritable capabilities for linux container should be empty (CVE-2022-27650)

    * buildah: Default inheritable capabilities for linux container should be empty (CVE-2022-27651)

    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.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.6 Release Notes     linked from 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.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2022:1793 advisory.

    The container-tools module contains tools for working with containers, notably podman, buildah, skopeo,     and runc.

    Security Fix(es):

    * crun: Default inheritable capabilities for linux container should be empty (CVE-2022-27650)

    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.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.6 Release Notes     linked from 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 this issue but has instead relied only on the application's self-reported version number.

The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2022:1762 advisory.

  - psgo: Privilege escalation in 'podman top' (CVE-2022-1227)

  - prometheus/client_golang: Denial of service using InstrumentHandlerCounter (CVE-2022-21698)

  - podman: Default inheritable capabilities for linux container should be empty (CVE-2022-27649)

  - crun: Default inheritable capabilities for linux container should be empty (CVE-2022-27650)

  - buildah: Default inheritable capabilities for linux container should be empty (CVE-2022-27651)

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

The remote CentOS Linux 8 host has packages installed that are affected by a vulnerability as referenced in the CESA-2022:1793 advisory.

  - crun: Default inheritable capabilities for linux container should be empty (CVE-2022-27650)

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

ID	Name	Product	Family	Severity
252884	Linux Distros Unpatched Vulnerability : CVE-2022-27650	Nessus	Misc.	high
236060	Alibaba Cloud Linux 3 : 0050: container-tools:rhel8 (ALINUX3-SA-2024:0050)	Nessus	Alibaba Cloud Linux Local Security Checks	critical
185019	Rocky Linux 8 : container-tools:3.0 (RLSA-2022:1793)	Nessus	Rocky Linux Local Security Checks	high
184630	Rocky Linux 8 : container-tools:rhel8 (RLSA-2022:1762)	Nessus	Rocky Linux Local Security Checks	high
161289	Oracle Linux 8 : container-tools:3.0 (ELSA-2022-1793)	Nessus	Oracle Linux Local Security Checks	high
161275	Oracle Linux 8 : container-tools:ol8 (ELSA-2022-1762)	Nessus	Oracle Linux Local Security Checks	high
161146	AlmaLinux 8 : container-tools:3.0 (ALSA-2022:1793)	Nessus	Alma Linux Local Security Checks	high
161143	AlmaLinux 8 : container-tools:rhel8 (ALSA-2022:1762)	Nessus	Alma Linux Local Security Checks	high
161023	RHEL 8 : container-tools:rhel8 (RHSA-2022:1762)	Nessus	Red Hat Local Security Checks	high
160994	RHEL 8 : container-tools:3.0 (RHSA-2022:1793)	Nessus	Red Hat Local Security Checks	high
160967	CentOS 8 : container-tools:rhel8 (CESA-2022:1762)	Nessus	CentOS Local Security Checks	high
160963	CentOS 8 : container-tools:3.0 (CESA-2022:1793)	Nessus	CentOS Local Security Checks	high

Detections

Analytics

CVE-2022-27650

high

Tenable Plugins

high

critical

high

high

high

high

high

high

high

high

high

high