CVE-2021-29921
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 6.8%
In Python before 3,9,5, the ipaddress library mishandles leading zero characters in the octets of an IP address string. This (in some situations) allows attackers to bypass access control that is based on IP addresses.
Affected products
n/a · n/aReferences
https://bugs.python.org/issue36384https://docs.python.org/3/library/ipaddress.htmlhttps://github.com/python/cpython/blob/63298930fb531ba2bb4f23bc3b915dbf1e17e9e1/Misc/NEWS.d/3.8.0a4.rsthttps://github.com/python/cpython/pull/12577https://github.com/python/cpython/pull/25099https://github.com/sickcodeshttps://github.com/sickcodes/security/blob/master/advisories/SICK-2021-014.mdhttps://lists.debian.org/debian-lts-announce/2024/12/msg00000.htmlhttps://python-security.readthedocs.io/vuln/ipaddress-ipv4-leading-zeros.htmlhttps://security.gentoo.org/glsa/202305-02https://security.netapp.com/advisory/ntap-20210622-0003/https://sick.codes/sick-2021-014