| Name | CVE-2019-9636 |
| Description | Python 2.7.x through 2.7.16 and 3.x through 3.7.2 is affected by: Improper Handling of Unicode Encoding (with an incorrect netloc) during NFKC normalization. The impact is: Information disclosure (credentials, cookies, etc. that are cached against a given hostname). The components are: urllib.parse.urlsplit, urllib.parse.urlparse. The attack vector is: A specially crafted URL could be incorrectly parsed to locate cookies or authentication data and send that information to a different host than when parsed correctly. This is fixed in: v2.7.17, v2.7.17rc1, v2.7.18, v2.7.18rc1; v3.5.10, v3.5.10rc1, v3.5.7, v3.5.8, v3.5.8rc1, v3.5.8rc2, v3.5.9; v3.6.10, v3.6.10rc1, v3.6.11, v3.6.11rc1, v3.6.12, v3.6.9, v3.6.9rc1; v3.7.3, v3.7.3rc1, v3.7.4, v3.7.4rc1, v3.7.4rc2, v3.7.5, v3.7.5rc1, v3.7.6, v3.7.6rc1, v3.7.7, v3.7.7rc1, v3.7.8, v3.7.8rc1, v3.7.9. |
| 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-1834-1, DLA-1835-1, DLA-2280-1, DLA-2337-1, ELA-134-1, ELA-135-1 |
| Debian Bugs | 924072, 924073 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| python2.7 (PTS) | jessie, jessie (lts) | 2.7.9-2-ds1-1+deb8u12 | fixed |
| stretch (security) | 2.7.13-2+deb9u6 | fixed | |
| stretch (lts), stretch | 2.7.13-2+deb9u9 | fixed | |
| buster | 2.7.16-2+deb10u1 | fixed | |
| buster (security) | 2.7.16-2+deb10u4 | fixed | |
| bullseye | 2.7.18-8+deb11u1 | fixed | |
| python3.4 (PTS) | jessie, jessie (lts) | 3.4.2-1+deb8u17 | fixed |
| python3.5 (PTS) | stretch (security) | 3.5.3-1+deb9u5 | fixed |
| stretch (lts), stretch | 3.5.3-1+deb9u9 | fixed | |
| python3.7 (PTS) | buster | 3.7.3-2+deb10u3 | fixed |
| buster (security) | 3.7.3-2+deb10u7 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| python2.6 | source | wheezy | 2.6.8-1.1+deb7u3 | ELA-135-1 | ||
| python2.7 | source | wheezy | 2.7.3-6+deb7u6 | ELA-134-1 | ||
| python2.7 | source | jessie | 2.7.9-2+deb8u3 | DLA-1834-1 | ||
| python2.7 | source | stretch | 2.7.13-2+deb9u4 | DLA-2337-1 | ||
| python2.7 | source | (unstable) | 2.7.16-2 | 924073 | ||
| python3.4 | source | jessie | 3.4.2-1+deb8u3 | DLA-1835-1 | ||
| python3.4 | source | (unstable) | (unfixed) | |||
| python3.5 | source | stretch | 3.5.3-1+deb9u2 | DLA-2280-1 | ||
| python3.5 | source | (unstable) | (unfixed) | |||
| python3.6 | source | (unstable) | (unfixed) | |||
| python3.7 | source | (unstable) | 3.7.3~rc1-1 | 924072 |
https://bugs.python.org/issue36216
https://github.com/python/cpython/pull/12201
https://python-security.readthedocs.io/vuln/urlsplit-nfkc-normalization.html
https://github.com/python/cpython/commit/daad2c482c91de32d8305abbccc76a5de8b3a8be (3.7.x)
https://github.com/python/cpython/commit/e37ef41289b77e0f0bb9a6aedb0360664c55bdd5 (2.7.x)
Regression fix: https://bugs.python.org/issue36742
When fixing this issue make sure to not open CVE-2019-10160.