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Python » Urllib3 » * * * * : Security Vulnerabilities

Cpe Name:cpe:2.3:a:python:urllib3:*:*:*:*:*:*:*:*

CVSS Scores Greater Than: 0 1 2 3 4 5 6 7 8 9

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#	CVE ID	CWE ID	# of Exploits	Vulnerability Type(s)	Publish Date	Update Date	Score	Gained Access Level	Access	Complexity	Authentication	Conf.	Integ.	Avail.
1	CVE-2021-33503	400		DoS	2021-06-29	2023-01-24	5.0	None	Remote	Low	Not required	None	None	Partial
An issue was discovered in urllib3 before 1.26.5. When provided with a URL containing many @ characters in the authority component, the authority regular expression exhibits catastrophic backtracking, causing a denial of service if a URL were passed as a parameter or redirected to via an HTTP redirect.
2	CVE-2021-28363	295			2021-03-15	2023-05-03	6.4	None	Remote	Low	Not required	Partial	Partial	None
The urllib3 library 1.26.x before 1.26.4 for Python omits SSL certificate validation in some cases involving HTTPS to HTTPS proxies. The initial connection to the HTTPS proxy (if an SSLContext isn't given via proxy_config) doesn't verify the hostname of the certificate. This means certificates for different servers that still validate properly with the default urllib3 SSLContext will be silently accepted.
3	CVE-2020-26137	74			2020-09-30	2023-01-31	6.4	None	Remote	Low	Not required	Partial	Partial	None
urllib3 before 1.25.9 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 putrequest(). NOTE: this is similar to CVE-2020-26116.
4	CVE-2020-7212	400		DoS	2020-03-06	2020-03-09	7.8	None	Remote	Low	Not required	None	None	Complete
The _encode_invalid_chars function in util/url.py in the urllib3 library 1.25.2 through 1.25.7 for Python allows a denial of service (CPU consumption) because of an inefficient algorithm. The percent_encodings array contains all matches of percent encodings. It is not deduplicated. For a URL of length N, the size of percent_encodings may be up to O(N). The next step (normalize existing percent-encoded bytes) also takes up to O(N) for each step, so the total time is O(N^2). If percent_encodings were deduplicated, the time to compute _encode_invalid_chars would be O(kN), where k is at most 484 ((10+6*2)^2).
5	CVE-2019-11324	295			2019-04-18	2021-06-15	5.0	None	Remote	Low	Not required	None	Partial	None
The urllib3 library before 1.24.2 for Python mishandles certain cases where the desired set of CA certificates is different from the OS store of CA certificates, which results in SSL connections succeeding in situations where a verification failure is the correct outcome. This is related to use of the ssl_context, ca_certs, or ca_certs_dir argument.
6	CVE-2019-11236	93			2019-04-15	2021-06-15	4.3	None	Remote	Medium	Not required	None	Partial	None
In the urllib3 library through 1.24.1 for Python, CRLF injection is possible if the attacker controls the request parameter.
7	CVE-2018-20060				2018-12-11	2021-06-15	5.0	None	Remote	Low	Not required	Partial	None	None
urllib3 before version 1.23 does not remove the Authorization HTTP header when following a cross-origin redirect (i.e., a redirect that differs in host, port, or scheme). This can allow for credentials in the Authorization header to be exposed to unintended hosts or transmitted in cleartext.

Total number of vulnerabilities : 7 Page : 1 (This Page)

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