5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.3 High
AI Score
Confidence
High
0.916 High
EPSS
Percentile
98.9%
Debian LTS Advisory DLA-2685-1 [email protected]
https://www.debian.org/lts/security/ Abhijith PA
June 14, 2021 https://wiki.debian.org/LTS
Package : squid3
Version : 3.5.23-5+deb9u7
CVE ID : CVE-2021-28651 CVE-2021-28652 CVE-2021-31806 CVE-2021-31807
CVE-2021-31808 CVE-2021-33620
Several vulnerabilities were discovered in Squid, a proxy caching
server.
CVE-2021-28651
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-2021-28652
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-2021-31806
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-2021-31807
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-2021-31808
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-2021-33620
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.
For Debian 9 stretch, these problems have been fixed in version
3.5.23-5+deb9u7.
We recommend that you upgrade your squid3 packages.
For the detailed security status of squid3 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/squid3
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 10 | amd64 | squidclient-dbgsym | < 4.6-1+deb10u6 | squidclient-dbgsym_4.6-1+deb10u6_amd64.deb |
Debian | 10 | mipsel | squidclient | < 4.6-1+deb10u6 | squidclient_4.6-1+deb10u6_mipsel.deb |
Debian | 9 | arm64 | squid | < 3.5.23-5+deb9u7 | squid_3.5.23-5+deb9u7_arm64.deb |
Debian | 10 | ppc64el | squid-dbgsym | < 4.6-1+deb10u6 | squid-dbgsym_4.6-1+deb10u6_ppc64el.deb |
Debian | 10 | i386 | squid | < 4.6-1+deb10u6 | squid_4.6-1+deb10u6_i386.deb |
Debian | 10 | ppc64el | squid-purge-dbgsym | < 4.6-1+deb10u6 | squid-purge-dbgsym_4.6-1+deb10u6_ppc64el.deb |
Debian | 10 | armel | squid-cgi | < 4.6-1+deb10u6 | squid-cgi_4.6-1+deb10u6_armel.deb |
Debian | 10 | armel | squid-purge-dbgsym | < 4.6-1+deb10u6 | squid-purge-dbgsym_4.6-1+deb10u6_armel.deb |
Debian | 10 | amd64 | squid-dbgsym | < 4.6-1+deb10u6 | squid-dbgsym_4.6-1+deb10u6_amd64.deb |
Debian | 9 | arm64 | squid-purge | < 3.5.23-5+deb9u7 | squid-purge_3.5.23-5+deb9u7_arm64.deb |
5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.3 High
AI Score
Confidence
High
0.916 High
EPSS
Percentile
98.9%