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
7.7 High
AI Score
Confidence
High
5 Medium
CVSS2
Access Vector
NETWORK
Access 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
0.005 Low
EPSS
Percentile
75.4%
Issue Overview:
An issue was discovered in Squid before 4.12 and 5.x before 5.0.3. Due to use of a potentially dangerous function, Squid and the default certificate validation helper are vulnerable to a Denial of Service when opening a TLS connection to an attacker-controlled server for HTTPS. This occurs because unrecognized error values are mapped to NULL, but later code expects that each error value is mapped to a valid error string. (CVE-2020-14058)
Affected Packages:
squid
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update squid to update your system.
New Packages:
aarch64:
squid-3.5.20-17.amzn2.7.3.aarch64
squid-sysvinit-3.5.20-17.amzn2.7.3.aarch64
squid-migration-script-3.5.20-17.amzn2.7.3.aarch64
squid-debuginfo-3.5.20-17.amzn2.7.3.aarch64
i686:
squid-3.5.20-17.amzn2.7.3.i686
squid-sysvinit-3.5.20-17.amzn2.7.3.i686
squid-migration-script-3.5.20-17.amzn2.7.3.i686
squid-debuginfo-3.5.20-17.amzn2.7.3.i686
src:
squid-3.5.20-17.amzn2.7.3.src
x86_64:
squid-3.5.20-17.amzn2.7.3.x86_64
squid-sysvinit-3.5.20-17.amzn2.7.3.x86_64
squid-migration-script-3.5.20-17.amzn2.7.3.x86_64
squid-debuginfo-3.5.20-17.amzn2.7.3.x86_64
Red Hat: CVE-2020-14058
Mitre: CVE-2020-14058
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
7.7 High
AI Score
Confidence
High
5 Medium
CVSS2
Access Vector
NETWORK
Access 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
0.005 Low
EPSS
Percentile
75.4%