CVE-2021-28861

2022-08-2300:00:00

ubuntu.com

7.4 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

7.5 High

AI Score

Confidence

High

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:N/A:N

0.002 Low

EPSS

Percentile

59.1%

JSON

DISPUTED Python 3.x through 3.10 has an open redirection
vulnerability in lib/http/server.py due to no protection against multiple
(/) at the beginning of URI path which may leads to information disclosure.
NOTE: this is disputed by a third party because the http.server.html
documentation page states “Warning: http.server is not recommended for
production. It only implements basic security checks.”

Bugs

<https://bugs.python.org/issue43223 (old)>
<https://github.com/python/cpython/issues/87389 (new)>

Notes

Author	Note
	Priority reason: Works as documented, and disputed as being a security issue
mdeslaur	This CVE has now been disputed by the upstream developers, marking remaining releases as not-affected

OSVersionArchitecturePackageVersionFilename
ubuntu22.04noarchpython3.10< 3.10.6-1~22.04.1UNKNOWN
ubuntu16.04noarchpython3.5< 3.5.2-2ubuntu0~16.04.13+esm5) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu20.04noarchpython3.9< 3.9.5-3ubuntu0~20.04.1+esm1UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	22.04	noarch	python3.10	< 3.10.6-1~22.04.1	UNKNOWN
ubuntu	16.04	noarch	python3.5	< 3.5.2-2ubuntu0~16.04.13+esm5) Available with Ubuntu Pro or Ubuntu Pro (Infra-only	UNKNOWN
ubuntu	20.04	noarch	python3.9	< 3.9.5-3ubuntu0~20.04.1+esm1	UNKNOWN