The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2021:1610 advisory.

  - curl: Expired pointer dereference via multi API with CURLOPT_CONNECT_ONLY option set (CVE-2020-8231)

  - curl: FTP PASV command response can cause curl to connect to arbitrary host (CVE-2020-8284)

  - curl: Malicious FTP server can trigger stack overflow when CURLOPT_CHUNK_BGN_FUNCTION is used     (CVE-2020-8285)

  - curl: Inferior OCSP verification (CVE-2020-8286)

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-2021-1610 advisory.

  - Due to use of a dangling pointer, libcurl 7.29.0 through 7.71.1 can use the wrong connection when sending     data. (CVE-2020-8231)

  - A malicious server can use the FTP PASV response to trick curl 7.73.0 and earlier into connecting back to     a given IP address and port, and this way potentially make curl extract information about services that     are otherwise private and not disclosed, for example doing port scanning and service banner extractions.
    (CVE-2020-8284)

  - curl 7.21.0 to and including 7.73.0 is vulnerable to uncontrolled recursion due to a stack overflow issue     in FTP wildcard match parsing. (CVE-2020-8285)

  - curl 7.41.0 through 7.73.0 is vulnerable to an improper check for certificate revocation due to     insufficient verification of the OCSP response. (CVE-2020-8286)

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-2021:1610 advisory.

  - Due to use of a dangling pointer, libcurl 7.29.0 through 7.71.1 can use the wrong connection when sending     data. (CVE-2020-8231)

  - A malicious server can use the FTP PASV response to trick curl 7.73.0 and earlier into connecting back to     a given IP address and port, and this way potentially make curl extract information about services that     are otherwise private and not disclosed, for example doing port scanning and service banner extractions.
    (CVE-2020-8284)

  - curl 7.21.0 to and including 7.73.0 is vulnerable to uncontrolled recursion due to a stack overflow issue     in FTP wildcard match parsing. (CVE-2020-8285)

  - curl 7.41.0 through 7.73.0 is vulnerable to an improper check for certificate revocation due to     insufficient verification of the OCSP response. (CVE-2020-8286)

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

The version of F5 Networks BIG-IP installed on the remote host is prior to 15.1.10 / 16.1.4 / 17.1.1. It is, therefore, affected by a vulnerability as referenced in the K15402727 advisory.

  - curl 7.41.0 through 7.73.0 is vulnerable to an improper check for certificate revocation due to     insufficient verification of the OCSP response. (CVE-2020-8286)

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

The remote NewStart CGSL host, running version MAIN 6.02, has curl packages installed that are affected by multiple vulnerabilities:

  - Due to use of a dangling pointer, libcurl 7.29.0 through 7.71.1 can use the wrong connection when sending     data. (CVE-2020-8231)

  - A malicious server can use the FTP PASV response to trick curl 7.73.0 and earlier into connecting back to     a given IP address and port, and this way potentially make curl extract information about services that     are otherwise private and not disclosed, for example doing port scanning and service banner extractions.
    (CVE-2020-8284)

  - curl 7.21.0 to and including 7.73.0 is vulnerable to uncontrolled recursion due to a stack overflow issue     in FTP wildcard match parsing. (CVE-2020-8285)

  - curl 7.41.0 through 7.73.0 is vulnerable to an improper check for certificate revocation due to     insufficient verification of the OCSP response. (CVE-2020-8286)

  - When curl is instructed to download content using the metalink feature, thecontents is verified against a     hash provided in the metalink XML file.The metalink XML file points out to the client how to get the same     contentfrom a set of different URLs, potentially hosted by different servers and theclient can then     download the file from one or several of them. In a serial orparallel manner.If one of the servers hosting     the contents has been breached and the contentsof the specific file on that server is replaced with a     modified payload, curlshould detect this when the hash of the file mismatches after a completeddownload.
    It should remove the contents and instead try getting the contentsfrom another URL. This is not done, and     instead such a hash mismatch is onlymentioned in text and the potentially malicious content is kept in the     file ondisk. (CVE-2021-22922)

  - When curl is instructed to get content using the metalink feature, and a user name and password are used     to download the metalink XML file, those same credentials are then subsequently passed on to each of the     servers from which curl will download or try to download the contents from. Often contrary to the user's     expectations and intentions and without telling the user it happened. (CVE-2021-22923)

  - libcurl keeps previously used connections in a connection pool for subsequenttransfers to reuse, if one of     them matches the setup.Due to errors in the logic, the config matching function did not take 'issuercert'     into account and it compared the involved paths *case insensitively*,which could lead to libcurl reusing     wrong connections.File paths are, or can be, case sensitive on many systems but not all, and caneven vary     depending on used file systems.The comparison also didn't include the 'issuer cert' which a transfer can     setto qualify how to verify the server certificate. (CVE-2021-22924)

  - A user can tell curl >= 7.20.0 and <= 7.78.0 to require a successful upgrade to TLS when speaking to an     IMAP, POP3 or FTP server (`--ssl-reqd` on the command line or`CURLOPT_USE_SSL` set to `CURLUSESSL_CONTROL`     or `CURLUSESSL_ALL` withlibcurl). This requirement could be bypassed if the server would return a properly     crafted but perfectly legitimate response.This flaw would then make curl silently continue its operations
    **withoutTLS** contrary to the instructions and expectations, exposing possibly sensitive data in clear     text over the network. (CVE-2021-22946)

  - When curl >= 7.20.0 and <= 7.78.0 connects to an IMAP or POP3 server to retrieve data using STARTTLS to     upgrade to TLS security, the server can respond and send back multiple responses at once that curl caches.
    curl would then upgrade to TLS but not flush the in-queue of cached responses but instead continue using     and trustingthe responses it got *before* the TLS handshake as if they were authenticated.Using this flaw,     it allows a Man-In-The-Middle attacker to first inject the fake responses, then pass-through the TLS     traffic from the legitimate server and trick curl into sending data back to the user thinking the     attacker's injected data comes from the TLS-protected server. (CVE-2021-22947)

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

The remote host is running a version of macOS / Mac OS X that is 10.14.x prior to 10.14.6 Security Update 2021-003 Mojave It is, therefore, affected by multiple vulnerabilities, including the following:

  - An application may be able to execute arbitrary code with system privileges due to insufficient permission     checks (CVE-2020-3838).

  - A memory corruption vulnerability could allow an application read access to restricted memory (CVE-2021-1808).

  - A memory corruption vulnerability could allow an application to cause unexpected system termination or to     write kernel memory (CVE-2021-1828).

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

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 20.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4665-1 advisory. Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The cURL project reports :

Trusting FTP PASV responses (CVE-2020-8284)

FTP wildcard stack overflow (CVE-2020-8285)

Inferior OCSP verification (CVE-2020-8286)

This update for curl fixes the following issues :

CVE-2020-8286: Fixed improper OSCP verification in the client side (bsc#1179593).

CVE-2020-8285: Fixed a stack overflow due to FTP wildcard (bsc#1179399).

CVE-2020-8284: Fixed an issue where a malicius FTP server could make curl connect to a different IP (bsc#1179398).

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

An update of the curl package has been released.

On December 9, 2020, curl published security updates addressing CVE-2020-8284, CVE-2020-8285, and CVE-2020-8286. Previous releases of Puppet Agent contain a vulnerable version of curl. For more information about this vulnerability, refer to the security announcement.

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	Published	Updated	Severity
149767	CentOS 8 : curl (CESA-2021:1610)	Nessus	CentOS Local Security Checks	5/19/2021	9/12/2023	high
149932	Oracle Linux 8 : curl (ELSA-2021-1610)	Nessus	Oracle Linux Local Security Checks	5/26/2021	12/28/2023	high
157525	AlmaLinux 8 : curl (ALSA-2021:1610)	Nessus	Alma Linux Local Security Checks	2/9/2022	11/13/2023	high
154679	F5 Networks BIG-IP : cURL vulnerability (K15402727)	Nessus	F5 Networks Local Security Checks	10/28/2021	1/2/2024	high
167463	NewStart CGSL MAIN 6.02 : curl Multiple Vulnerabilities (NS-SA-2022-0083)	Nessus	NewStart CGSL Local Security Checks	11/15/2022	10/4/2023	high
194927	Universal Forwarders < 8.1.14, 8.2.0 < 8.2.11, 9.0.0 < 9.0.5 (SVD-2023-0614)	Nessus	CGI abuses	5/2/2024	5/30/2024	critical
149043	macOS 10.14.x < 10.14.6 Security Update 2021-003 Mojave (HT212327)	Nessus	MacOS X Local Security Checks	4/28/2021	5/28/2024	critical
144011	Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : curl vulnerabilities (USN-4665-1)	Nessus	Ubuntu Local Security Checks	12/9/2020	10/21/2023	high
144028	FreeBSD : cURL -- Multiple vulnerabilities (3c77f139-3a09-11eb-929d-d4c9ef517024)	Nessus	FreeBSD Local Security Checks	12/10/2020	2/2/2024	high
144034	SUSE SLED15 / SLES15 Security Update : curl (SUSE-SU-2020:3733-1)	Nessus	SuSE Local Security Checks	12/10/2020	2/2/2024	high
144082	Photon OS 1.0: Curl PHSA-2020-1.0-0346	Nessus	PhotonOS Local Security Checks	12/11/2020	2/2/2024	high
184147	Puppet Agent < 7.1.0 Vulnerability	Nessus	Windows	11/1/2023	11/2/2023	high

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