| Name | CVE-2018-1000656 |
| Description | The Pallets Project flask version Before 0.12.3 contains a CWE-20: Improper Input Validation vulnerability in flask that can result in Large amount of memory usage possibly leading to denial of service. This attack appear to be exploitable via Attacker provides JSON data in incorrect encoding. This vulnerability appears to have been fixed in 0.12.3. NOTE: this may overlap CVE-2019-1010083. |
| 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-1892-1, ELA-940-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| flask (PTS) | jessie, jessie (lts) | 0.10.1-2+deb8u1 | fixed |
| stretch (lts), stretch | 0.12.1-1+deb9u1 | fixed |
| buster (security), buster, buster (lts) | 1.0.2-3+deb10u1 | fixed |
| bullseye (security), bullseye | 1.1.2-2+deb11u1 | fixed |
| bookworm | 2.2.2-3 | fixed |
| sid, trixie | 3.1.0-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| flask | source | wheezy | (unfixed) | end-of-life | | |
| flask | source | jessie | 0.10.1-2+deb8u1 | | DLA-1892-1 | |
| flask | source | stretch | 0.12.1-1+deb9u1 | | ELA-940-1 | |
| flask | source | (unstable) | 1.0.2-1 | | | |
Notes
[stretch] - flask <no-dsa> (Minor issue)
https://github.com/pallets/flask/pull/2691
https://github.com/pallets/flask/commit/b178e89e4456e777b1a7ac6d7199052d0dfdbbbe (1.0)
https://github.com/pallets/flask/commit/b178e89e4456e777b1a7ac6d7199052d0dfdbbbe (0.12.3)