The remote SUSE Linux SLES15 / SLES_SAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:1961-1 advisory.

    - update to 4.15:
    - CVE-2021-28652: Broken cache manager URL parsing (bsc#1185918)
    - CVE-2021-28651: Memory leak in RFC 2169 response parsing (bsc#1185921)
    - CVE-2021-28662: Limit HeaderLookupTable_t::lookup() to BadHdr and specific IDs (bsc#1185919)
    - CVE-2021-31806: Handle more Range requests (bsc#1185916)
    - CVE-2020-25097: HTTP Request Smuggling vulnerability (bsc#1183436)
    - Handle more partial responses (bsc#1185923)
    - fix previous change to reinstante permissions macros, because the wrong path has been used     (bsc#1171569).
    - use libexecdir instead of libdir to conform to recent changes in Factory (bsc#1171164).
    - Reinstate permissions macros for pinger binary, because the permissions       package is also responsible for setting up the cap_net_raw capability,       currently a fresh squid install doesn't get a capability bit at all (bsc#1171569).
    - Change pinger and basic_pam_auth helper to use standard permissions. pinger uses cap_net_raw=ep instead     (bsc#1171569)

Tenable has extracted the preceding description block directly from the SUSE 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 SUSE Linux SUSE15 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2021:1961-1 advisory.

  - An issue was discovered in Squid through 4.13 and 5.x through 5.0.4. Due to improper input validation, it     allows a trusted client to perform HTTP Request Smuggling and access services otherwise forbidden by the     security controls. This occurs for certain uri_whitespace configuration settings. (CVE-2020-25097)

  - An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a buffer-management bug, it     allows a denial of service. When resolving a request with the urn: scheme, the parser leaks a small amount     of memory. However, there is an unspecified attack methodology that can easily trigger a large amount of     memory consumption. (CVE-2021-28651)

  - An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to incorrect parser validation, it     allows a Denial of Service attack against the Cache Manager API. This allows a trusted client to trigger     memory leaks that. over time, lead to a Denial of Service via an unspecified short query string. This     attack is limited to clients with Cache Manager API access privilege. (CVE-2021-28652)

  - An issue was discovered in Squid 4.x before 4.15 and 5.x before 5.0.6. If a remote server sends a certain     response header over HTTP or HTTPS, there is a denial of service. This header can plausibly occur in     benign network traffic. (CVE-2021-28662)

  - An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a memory-management bug, it is     vulnerable to a Denial of Service attack (against all clients using the proxy) via HTTP Range request     processing. (CVE-2021-31806)

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

An update of the squid package has been released.

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2021-2820:01 advisory.

    * squid: denial of service in URN processing (CVE-2021-28651)
      * squid: denial of service issue in Cache Manager (CVE-2021-28652)
      * squid: denial of service in HTTP response processing (CVE-2021-28662)
      * squid: improper input validation in HTTP Range header (CVE-2021-31806)
      * squid: incorrect memory management in HTTP Range header (CVE-2021-31807)
      * squid: integer overflow in HTTP Range header (CVE-2021-31808)
      * squid: denial of service in HTTP response processing (CVE-2021-33620)

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

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

According to the versions of the squid package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a buffer-management bug, it     allows a denial of service. When resolving a request with the urn: scheme, the parser leaks a small amount     of memory. However, there is an unspecified attack methodology that can easily trigger a large amount of     memory consumption. (CVE-2021-28651)

  - An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to incorrect parser validation, it     allows a Denial of Service attack against the Cache Manager API. This allows a trusted client to trigger     memory leaks that. over time, lead to a Denial of Service via an unspecified short query string. This     attack is limited to clients with Cache Manager API access privilege. (CVE-2021-28652)

  - An issue was discovered in Squid 4.x before 4.15 and 5.x before 5.0.6. If a remote server sends a certain     response header over HTTP or HTTPS, there is a denial of service. This header can plausibly occur in     benign network traffic. (CVE-2021-28662)

  - An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a memory-management bug, it is     vulnerable to a Denial of Service attack (against all clients using the proxy) via HTTP Range request     processing. (CVE-2021-31806)

  - An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. An integer overflow problem allows a     remote server to achieve Denial of Service when delivering responses to HTTP Range requests. The issue     trigger is a header that can be expected to exist in HTTP traffic without any malicious intent.
    (CVE-2021-31807)

  - An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to an input-validation bug, it is     vulnerable to a Denial of Service attack (against all clients using the proxy). A client sends an HTTP     Range request to trigger this. (CVE-2021-31808)

  - Squid before 4.15 and 5.x before 5.0.6 allows remote servers to cause a denial of service (affecting     availability to all clients) via an HTTP response. The issue trigger is a header that can be expected to     exist in HTTP traffic without any malicious intent by the server. (CVE-2021-33620)

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

ID	Name	Product	Family	Published	Updated	Severity
150734	SUSE SLES15 Security Update : squid (SUSE-SU-2021:1961-1)	Nessus	SuSE Local Security Checks	6/12/2021	6/25/2026	high
151713	openSUSE 15 Security Update : squid (openSUSE-SU-2021:1961-1)	Nessus	SuSE Local Security Checks	7/16/2021	7/12/2024	high
151955	Photon OS 3.0: Squid PHSA-2021-3.0-0269	Nessus	PhotonOS Local Security Checks	7/22/2021	8/22/2025	medium
294522	MiracleLinux 8 : squid:4 (AXSA:2021-2820:01)	Nessus	Miracle Linux Local Security Checks	1/20/2026	1/20/2026	high
151967	Photon OS 4.0: Squid PHSA-2021-4.0-0063	Nessus	PhotonOS Local Security Checks	7/22/2021	11/2/2026	medium
153671	EulerOS 2.0 SP5 : squid (EulerOS-SA-2021-2519)	Nessus	Huawei Local Security Checks	9/27/2021	11/29/2023	high

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