9.8 High
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
7.5 High
CVSS2
Access Vector
NETWORK
Access 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
0.931 High
EPSS
Percentile
99.0%
Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.
The following packages have been upgraded to a later upstream version: squid (4.11). (BZ#1829467)
Security Fix(es):
squid: Improper input validation in request allows for proxy manipulation (CVE-2019-12520)
squid: Off-by-one error in addStackElement allows for heap buffer overflow and crash (CVE-2019-12521)
squid: Improper input validation in URI processor (CVE-2019-12523)
squid: Improper access restriction in url_regex may lead to security bypass (CVE-2019-12524)
squid: Heap overflow issue in URN processing (CVE-2019-12526)
squid: Information Disclosure issue in FTP Gateway (CVE-2019-12528)
squid: Out of bounds read in Proxy-Authorization header causes DoS (CVE-2019-12529)
squid: Denial of service in cachemgr.cgi (CVE-2019-12854)
squid: Buffer overflow in URI processor (CVE-2019-18676)
squid: Cross-Site Request Forgery issue in HTTP Request processing (CVE-2019-18677)
squid: HTTP Request Splitting issue in HTTP message processing (CVE-2019-18678)
squid: Information Disclosure issue in HTTP Digest Authentication (CVE-2019-18679)
squid: Mishandled HTML in the host parameter to cachemgr.cgi results in insecure behaviour (CVE-2019-18860)
squid: Improper input validation issues in HTTP Request processing (CVE-2020-8449)
squid: Buffer overflow in reverse-proxy configurations (CVE-2020-8450)
squid: DoS in TLS handshake (CVE-2020-14058)
squid: Request smuggling and poisoning attack against the HTTP cache (CVE-2020-15049)
squid: Improper input validation could result in a DoS (CVE-2020-24606)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.3 Release Notes linked from the References section.
9.8 High
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
7.5 High
CVSS2
Access Vector
NETWORK
Access 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
0.931 High
EPSS
Percentile
99.0%