| Name | CVE-2019-16056 |
| Description | An issue was discovered in Python through 2.7.16, 3.x through 3.5.7, 3.6.x through 3.6.9, and 3.7.x through 3.7.4. The email module wrongly parses email addresses that contain multiple @ characters. An application that uses the email module and implements some kind of checks on the From/To headers of a message could be tricked into accepting an email address that should be denied. An attack may be the same as in CVE-2019-11340; however, this CVE applies to Python more generally. |
| 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-1924-1, DLA-1925-1, DLA-2280-1, DLA-2337-1, ELA-164-1, ELA-165-1 |
| Debian Bugs | 940901 |
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 (security), buster, buster (lts) | 2.7.16-2+deb10u4 | fixed | |
| bullseye | 2.7.18-8+deb11u1 | fixed | |
| python3.4 (PTS) | jessie, jessie (lts) | 3.4.2-1+deb8u18 | fixed |
| python3.5 (PTS) | stretch (security) | 3.5.3-1+deb9u5 | fixed |
| stretch (lts), stretch | 3.5.3-1+deb9u10 | fixed | |
| python3.7 (PTS) | buster, buster (lts) | 3.7.3-2+deb10u8 | 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+deb7u4 | ELA-165-1 | ||
| python2.6 | source | (unstable) | (unfixed) | |||
| python2.7 | source | wheezy | 2.7.3-6+deb7u8 | ELA-164-1 | ||
| python2.7 | source | jessie | 2.7.9-2+deb8u5 | DLA-1925-1 | ||
| python2.7 | source | stretch | 2.7.13-2+deb9u4 | DLA-2337-1 | ||
| python2.7 | source | buster | 2.7.16-2+deb10u1 | |||
| python2.7 | source | (unstable) | 2.7.17~rc1-1 | 940901 | ||
| python3.4 | source | wheezy | (unfixed) | end-of-life | ||
| python3.4 | source | jessie | 3.4.2-1+deb8u7 | DLA-1924-1 | ||
| 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+deb10u1 | |||
| python3.7 | source | (unstable) | 3.7.4-4 | |||
| python3.8 | source | (unstable) | 3.8.0~b4-1 |
https://bugs.python.org/issue34155
https://github.com/python/cpython/commit/8cb65d1381b027f0b09ee36bfed7f35bb4dec9a9 (master)
https://github.com/python/cpython/commit/217077440a6938a0b428f67cfef6e053c4f8673c (v3.8.0b4)
https://github.com/python/cpython/commit/c48d606adcef395e59fd555496c42203b01dd3e8 (3.7 branch)
https://github.com/python/cpython/commit/13a19139b5e76175bc95294d54afc9425e4f36c9 (3.6 branch)
https://github.com/python/cpython/commit/063eba280a11d3c9a5dd9ee5abe4de640907951b (3.5 branch)
https://github.com/python/cpython/commit/4cbcd2f8c4e12b912e4d21fd892eedf7a3813d8e (2.7 branch)