The remote Ubuntu 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5628-1 advisory.

  - In etcd before versions 3.3.23 and 3.4.10, a large slice causes panic in decodeRecord method. The size of     a record is stored in the length field of a WAL file and no additional validation is done on this data.
    Therefore, it is possible to forge an extremely large frame size that can unintentionally panic at the     expense of any RAFT participant trying to decode the WAL. (CVE-2020-15106)

  - In etcd before versions 3.3.23 and 3.4.10, it is possible to have an entry index greater then the number     of entries in the ReadAll method in wal/wal.go. This could cause issues when WAL entries are being read     during consensus as an arbitrary etcd consensus participant could go down from a runtime panic when     reading the entry. (CVE-2020-15112)

  - In etcd before versions 3.3.23 and 3.4.10, certain directory paths are created (etcd data directory and     the directory path when provided to automatically generate self-signed certificates for TLS connections     with clients) with restricted access permissions (700) by using the os.MkdirAll. This function does not     perform any permission checks when a given directory path exists already. A possible workaround is to     ensure the directories have the desired permission (700). (CVE-2020-15113)

  - In etcd before versions 3.3.23 and 3.4.10, the etcd gateway is a simple TCP proxy to allow for basic     service discovery and access. However, it is possible to include the gateway address as an endpoint. This     results in a denial of service, since the endpoint can become stuck in a loop of requesting itself until     there are no more available file descriptors to accept connections on the gateway. (CVE-2020-15114)

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

Security fix for CVE-2020-15113, CVE-2020-15112, CVE-2020-15114, CVE-2020-15115, CVE-2020-15136, CVE-2020-15106

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

An update of the etcd package has been released.

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:0916 advisory.

  - etcd: Large slice causes panic in decodeRecord method (CVE-2020-15106)

  - etcd: DoS in wal/wal.go (CVE-2020-15112)

  - etcd: directories created via os.MkdirAll are not checked for permissions (CVE-2020-15113)

  - etcd: gateway can include itself as an endpoint resulting in resource exhaustion and leads to DoS     (CVE-2020-15114)

  - etcd: improper validation of passwords allow an attacker to guess or brute-force user's passwords     (CVE-2020-15115)

  - etcd: no authentication is performed against endpoints provided in the --endpoints flag (CVE-2020-15136)

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

The remote Ubuntu 18.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5628-2 advisory.

  - In etcd before versions 3.3.23 and 3.4.10, a large slice causes panic in decodeRecord method. The size of     a record is stored in the length field of a WAL file and no additional validation is done on this data.
    Therefore, it is possible to forge an extremely large frame size that can unintentionally panic at the     expense of any RAFT participant trying to decode the WAL. (CVE-2020-15106)

  - In etcd before versions 3.3.23 and 3.4.10, it is possible to have an entry index greater then the number     of entries in the ReadAll method in wal/wal.go. This could cause issues when WAL entries are being read     during consensus as an arbitrary etcd consensus participant could go down from a runtime panic when     reading the entry. (CVE-2020-15112)

  - In etcd before versions 3.3.23 and 3.4.10, certain directory paths are created (etcd data directory and     the directory path when provided to automatically generate self-signed certificates for TLS connections     with clients) with restricted access permissions (700) by using the os.MkdirAll. This function does not     perform any permission checks when a given directory path exists already. A possible workaround is to     ensure the directories have the desired permission (700). (CVE-2020-15113)

  - In etcd before versions 3.3.23 and 3.4.10, the etcd gateway is a simple TCP proxy to allow for basic     service discovery and access. However, it is possible to include the gateway address as an endpoint. This     results in a denial of service, since the endpoint can become stuck in a loop of requesting itself until     there are no more available file descriptors to accept connections on the gateway. (CVE-2020-15114)

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

ID	Name	Product	Family	Published	Updated	Severity
165324	Ubuntu 20.04 LTS : etcd vulnerabilities (USN-5628-1)	Nessus	Ubuntu Local Security Checks	9/22/2022	7/10/2023	high
144696	Fedora 32 : etcd (2020-cd43b84c16)	Nessus	Fedora Local Security Checks	1/4/2021	1/31/2024	high
139696	Photon OS 1.0: Etcd PHSA-2020-1.0-0313	Nessus	PhotonOS Local Security Checks	8/20/2020	5/12/2022	high
139698	Photon OS 3.0: Etcd PHSA-2020-3.0-0126	Nessus	PhotonOS Local Security Checks	8/20/2020	8/21/2020	high
139608	Photon OS 2.0: Etcd PHSA-2020-2.0-0272	Nessus	PhotonOS Local Security Checks	8/15/2020	5/12/2022	high
147868	RHEL 8 : Red Hat OpenStack Platform 16.1.4 (etcd) (RHSA-2021:0916)	Nessus	Red Hat Local Security Checks	3/17/2021	1/23/2023	high
183128	Ubuntu 18.04 ESM : etcd vulnerabilities (USN-5628-2)	Nessus	Ubuntu Local Security Checks	10/16/2023	12/22/2023	high

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