An update for python-urllib3 is now available for openEuler-20.03-LTS-SP1 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2021-1260 Final 1.0 1.0 2021-07-10 Initial 2021-07-10 2021-07-10 openEuler SA Tool V1.0 2021-07-10 python-urllib3 security update An update for python-urllib3 is now available for openEuler-20.03-LTS-SP1. Security Fix(es): 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.(CVE-2021-33503) An update for python-urllib3 is now available for openEuler-20.03-LTS-SP1. openEuler Security has rated this update as having a security impact of high. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section. High python-urllib3 https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1260 https://openeuler.org/en/security/cve/detail.html?id=CVE-2021-33503 https://nvd.nist.gov/vuln/detail/CVE-2021-33503 openEuler-20.03-LTS-SP1 python2-urllib3-1.25.9-3.oe1.noarch.rpm python3-urllib3-1.25.9-3.oe1.noarch.rpm python-urllib3-1.25.9-3.oe1.src.rpm 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. 2021-07-10 CVE-2021-33503 openEuler-20.03-LTS-SP1 High 7.5 AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N python-urllib3 security update 2021-07-10 https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1260