CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
88.6%
USN-4446-1 fixed vulnerabilities in Squid. The update introduced a
regression when using Squid with the icap or ecap protocols. This update
fixes the problem.
We apologize for the inconvenience.
Original advisory details:
Jeriko One discovered that Squid incorrectly handled caching certain
requests. A remote attacker could possibly use this issue to perform
cache-injection attacks or gain access to reverse proxy features such as
ESI. (CVE-2019-12520)
Jeriko One and Kristoffer Danielsson discovered that Squid incorrectly
handled certain URN requests. A remote attacker could possibly use this
issue to bypass access checks. (CVE-2019-12523)
Jeriko One discovered that Squid incorrectly handled URL decoding. A remote
attacker could possibly use this issue to bypass certain rule checks.
(CVE-2019-12524)
Jeriko One and Kristoffer Danielsson discovered that Squid incorrectly
handled input validation. A remote attacker could use this issue to cause
Squid to crash, resulting in a denial of service. (CVE-2019-18676)
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Ubuntu | 18.04 | noarch | squid | < 3.5.27-1ubuntu1.8 | UNKNOWN |
Ubuntu | 18.04 | noarch | squid-cgi | < 3.5.27-1ubuntu1.8 | UNKNOWN |
Ubuntu | 18.04 | noarch | squid-common | < 3.5.27-1ubuntu1.8 | UNKNOWN |
Ubuntu | 18.04 | noarch | squid-dbg | < 3.5.27-1ubuntu1.8 | UNKNOWN |
Ubuntu | 18.04 | noarch | squid-purge | < 3.5.27-1ubuntu1.8 | UNKNOWN |
Ubuntu | 18.04 | noarch | squid3 | < 3.5.27-1ubuntu1.8 | UNKNOWN |
Ubuntu | 18.04 | noarch | squidclient | < 3.5.27-1ubuntu1.8 | UNKNOWN |
Ubuntu | 16.04 | noarch | squid | < 3.5.12-1ubuntu7.13 | UNKNOWN |
Ubuntu | 16.04 | noarch | squid-cgi | < 3.5.12-1ubuntu7.13 | UNKNOWN |
Ubuntu | 16.04 | noarch | squid-cgi-dbgsym | < 3.5.12-1ubuntu7.13 | UNKNOWN |
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
88.6%