| Name | CVE-2019-20907 |
| Description | In Lib/tarfile.py in Python through 3.8.3, an attacker is able to craft a TAR archive leading to an infinite loop when opened by tarfile.open, because _proc_pax lacks header validation. |
| 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-2337-1, DLA-2456-1, DLA-3432-1, ELA-265-1, ELA-289-1 |
| Debian Bugs | 970099 |
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 | vulnerable | |
| 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 | |
| python3.9 (PTS) | bullseye | 3.9.2-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| python2.7 | source | jessie | 2.7.9-2-ds1+deb8u6 | ELA-265-1 | ||
| python2.7 | source | stretch | 2.7.13-2+deb9u4 | DLA-2337-1 | ||
| python2.7 | source | buster | 2.7.16-2+deb10u2 | DLA-3432-1 | ||
| python2.7 | source | (unstable) | 2.7.18-2 | low | 970099 | |
| python3.4 | source | jessie | 3.4.2-1+deb8u9 | ELA-289-1 | ||
| python3.5 | source | stretch | 3.5.3-1+deb9u3 | DLA-2456-1 | ||
| python3.5 | source | (unstable) | (unfixed) | low | ||
| python3.7 | source | buster | 3.7.3-2+deb10u2 | |||
| python3.7 | source | (unstable) | (unfixed) | low | ||
| python3.8 | source | (unstable) | 3.8.5-1 | low | ||
| python3.9 | source | (unstable) | 3.9.0~b5-1 | low |
https://bugs.python.org/issue39017
https://github.com/python/cpython/commit/5a8d121a1f3ef5ad7c105ee378cc79a3eac0c7d4 (master)
https://github.com/python/cpython/commit/f3232294ee695492f43d424cc6969d018d49861d (3.9-branch)
https://github.com/python/cpython/commit/c55479556db015f48fc8bbca17f64d3e65598559 (3.8-branch)
https://github.com/python/cpython/commit/79c6b602efc9a906c8496f3d5f4d54c54b48fa06 (3.7-branch)
https://github.com/python/cpython/commit/47a2955589bdb1a114d271496ff803ad73f954b8 (3.6-branch)
https://github.com/python/cpython/pull/21454