CVE-2020-26116

MEDIUM

Description

http.client in Python 3.x before 3.5.10, 3.6.x before 3.6.12, 3.7.x before 3.7.9, and 3.8.x before 3.8.5 allows CRLF injection if the attacker controls the HTTP request method, as demonstrated by inserting CR and LF control characters in the first argument of HTTPConnection.request.

References

http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00027.html

https://bugs.python.org/issue39603

https://lists.debian.org/debian-lts-announce/2020/11/msg00032.html

https://lists.fedoraproject.org/archives/list/[email protected]/message/BW4GCLQISJCOEGQNIMVUZDQMIY6RR6CC/

https://lists.fedoraproject.org/archives/list/[email protected]/message/HDQ2THWU4GPV4Y5H5WW5PFMSWXL2CRFD/

https://lists.fedoraproject.org/archives/list/[email protected]ject.org/message/JWMAVY4T4257AZHTF2RZJKNJNSJFY24O/

https://lists.fedoraproject.org/archives/list/[email protected]/message/OXI72HIHMXCQFWTULUXDG7VDA2BCYL4Y/

https://lists.fedoraproject.org/archives/list/[email protected]/message/QOX7DGMMWWL6POCRYGAUCISOLR2IG3XV/

https://python-security.readthedocs.io/vuln/http-header-injection-method.html

https://security.gentoo.org/glsa/202101-18

https://security.netapp.com/advisory/ntap-20201023-0001/

https://usn.ubuntu.com/4581-1/

Details

Source: MITRE

Published: 2020-09-27

Updated: 2021-01-26

Type: CWE-116

Risk Information

CVSS v2.0

Base Score: 6.4

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:N

Impact Score: 4.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3.0

Base Score: 7.2

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

Impact Score: 2.7

Exploitability Score: 3.9

Severity: HIGH