Summary
Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2022-41317: A flaw was found in squid. A trusted client can directly access the cache manager information, bypassing the manager ACL protection and resulting in information disclosure. CVE-2021-33620: 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-2021-31808: 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-2021-31807: 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-2021-31806: 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-2021-28652: 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-2021-28651: 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.
Fixed packages 4
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2 | squid | 7:3.5.20-17.amzn2.7.2 |
| Amazon Linux · 2 | squid-debuginfo | 7:3.5.20-17.amzn2.7.2 |
| Amazon Linux · 2 | squid-migration-script | 7:3.5.20-17.amzn2.7.2 |
| Amazon Linux · 2 | squid-sysvinit | 7:3.5.20-17.amzn2.7.2 |
Vulnerabilities 7
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Medium 6.5CVE-2021-33620 EPSS 80%
Squid before 4.15 and 5.x before 5.0.6 allows remote servers to cause a denial of service (affecting availability to al…
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Medium 6.5
An issue was discovered in Squid 4.9 through 4.17 and 5.0.6 through 5.6. Due to inconsistent handling of internal URIs,…
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Unscored —
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 o…
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Unscored —
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to incorrect parser validation, it allows a Deni…
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Unscored —
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 …
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Unscored —
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. An integer overflow problem allows a remote server t…
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Unscored —
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 …
References
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web
https://alas.aws.amazon.com/cve/html/CVE-2021-28651.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2021-28652.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2021-31806.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2021-31807.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2021-31808.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2021-33620.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2022-41317.html