| Name | CVE-2020-14422 |
| Description | Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes, which might allow a remote attacker to cause a denial of service if an application is affected by the performance of a dictionary containing IPv4Interface or IPv6Interface objects, and this attacker can cause many dictionary entries to be created. This is fixed in: v3.5.10, v3.5.10rc1; v3.6.12; v3.7.9; v3.8.4, v3.8.4rc1, v3.8.5, v3.8.6, v3.8.6rc1; v3.9.0, v3.9.0b4, v3.9.0b5, v3.9.0rc1, v3.9.0rc2. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2280-1, DLA-3424-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| python-ipaddress (PTS) | bullseye | 1.0.23-1 | vulnerable |
| python2.7 (PTS) | bullseye | 2.7.18-8+deb11u1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| python-ipaddress | source | buster | 1.0.17-1+deb10u1 | DLA-3424-1 | ||
| python-ipaddress | source | (unstable) | (unfixed) | |||
| python2.7 | source | (unstable) | (not affected) | |||
| python3.4 | source | (unstable) | (unfixed) | |||
| python3.5 | source | stretch | 3.5.3-1+deb9u2 | DLA-2280-1 | ||
| python3.5 | source | (unstable) | (unfixed) | |||
| python3.7 | source | buster | 3.7.3-2+deb10u2 | |||
| python3.7 | source | (unstable) | (unfixed) | |||
| python3.8 | source | (unstable) | 3.8.4~rc1-1 |
[jessie] - python3.4 <postponed> (Minor issue, DoS with constraints)
- python2.7 <not-affected> (ipaddress module introduced in 3.3)
[bullseye] - python-ipaddress <no-dsa> (Minor issue)
https://bugs.python.org/issue41004
https://github.com/python/cpython/pull/20956
https://github.com/python/cpython/pull/21033
https://github.com/python/cpython/commit/b30ee26e366bf509b7538d79bfec6c6d38d53f28 (master)
https://github.com/python/cpython/commit/9a646aa82dfa62d70ca2a99ada901ee6cf9f82bd (3.9-branch)
https://github.com/python/cpython/commit/dc8ce8ead182de46584cc1ed8a8c51d48240cbd5 (v3.8.4rc1)
https://github.com/python/cpython/commit/b98e7790c77a4378ec4b1c71b84138cb930b69b7 (3.7-branch)
https://github.com/python/cpython/commit/cfc7ff8d05f7a949a88b8a8dd506fb5c1c30d3e9 (3.6-branch)