5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
0.005 Low
EPSS
Percentile
75.7%
http.cookiejar.DefaultPolicy.domain_return_ok in Lib/http/cookiejar.py in
Python before 3.7.3 does not correctly validate the domain: it can be
tricked into sending existing cookies to the wrong server. An attacker may
abuse this flaw by using a server with a hostname that has another valid
hostname as a suffix (e.g., pythonicexample.com to steal cookies for
example.com). When a program uses http.cookiejar.DefaultPolicy and tries to
do an HTTP connection to an attacker-controlled server, existing cookies
can be leaked to the attacker. This affects 2.x through 2.7.16, 3.x before
3.4.10, 3.5.x before 3.5.7, 3.6.x before 3.6.9, and 3.7.x before 3.7.3.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | python2.7 | < 2.7.15-4ubuntu4~18.04.1 | UNKNOWN |
ubuntu | 19.04 | noarch | python2.7 | < 2.7.16-2ubuntu0.1 | UNKNOWN |
ubuntu | 14.04 | noarch | python2.7 | < 2.7.6-8ubuntu0.6+esm2) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
ubuntu | 16.04 | noarch | python2.7 | < 2.7.12-1ubuntu0~16.04.8 | UNKNOWN |
ubuntu | 14.04 | noarch | python3.4 | < 3.4.3-1ubuntu1~14.04.7+esm2) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
ubuntu | 14.04 | noarch | python3.5 | < any | UNKNOWN |
ubuntu | 16.04 | noarch | python3.5 | < 3.5.2-2ubuntu0~16.04.8 | UNKNOWN |
ubuntu | 18.04 | noarch | python3.6 | < 3.6.8-1~18.04.2 | UNKNOWN |
launchpad.net/bugs/cve/CVE-2018-20852
nvd.nist.gov/vuln/detail/CVE-2018-20852
python-security.readthedocs.io/vuln/cookie-domain-check.html
security-tracker.debian.org/tracker/CVE-2018-20852
ubuntu.com/security/notices/USN-4127-1
ubuntu.com/security/notices/USN-4127-2
www.cve.org/CVERecord?id=CVE-2018-20852
5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
0.005 Low
EPSS
Percentile
75.7%