Ubuntu.comUB:CVE-2020-14058CVE-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
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
0.006 Low
EPSS
Percentile
77.7%
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.
Notes
| Author | Note |
|---|---|
| mdeslaur | In Ubuntu, squid is built without openssl support, so this is not an issue. |
References
www.squid-cache.org/Advisories/SQUID-2020_6.txt
www.squid-cache.org/Versions/v4/changesets/squid-4-93f5fda134a2a010b84ffedbe833d670e63ba4be.patch
www.squid-cache.org/Versions/v5/changesets/squid-5-c6d1a4f6a2cbebceebc8a3fcd8f539ceb7b7f723.patch
github.com/squid-cache/squid/security/advisories/GHSA-qvf6-485q-vm57
launchpad.net/bugs/cve/CVE-2020-14058
nvd.nist.gov/vuln/detail/CVE-2020-14058
security-tracker.debian.org/tracker/CVE-2020-14058
www.cve.org/CVERecord?id=CVE-2020-14058
Related
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
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
0.006 Low
EPSS
Percentile
77.7%