| Name | CVE-2021-20193 |
| Description | A flaw was found in the src/list.c of tar 1.33 and earlier. This flaw allows an attacker who can submit a crafted input file to tar to cause uncontrolled consumption of memory. The highest threat from this vulnerability is to system availability. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 980525 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| tar (PTS) | jessie, jessie (lts) | 1.27.1-2+deb8u2 | vulnerable |
| stretch (security), stretch (lts), stretch | 1.29b-1.1+deb9u1 | vulnerable |
| buster (security), buster, buster (lts) | 1.30+dfsg-6+deb10u1 | vulnerable |
| bullseye | 1.34+dfsg-1+deb11u1 | fixed |
| bookworm | 1.34+dfsg-1.2+deb12u1 | fixed |
| sid, trixie | 1.35+dfsg-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| tar | source | (unstable) | 1.34+dfsg-1 | unimportant | | 980525 |
Notes
https://savannah.gnu.org/bugs/?59897
https://git.savannah.gnu.org/cgit/tar.git/commit/?id=d9d4435692150fa8ff68e1b1a473d187cc3fd777
Memory leak in CLI tool, no security impact