| Name | CVE-2021-4217 |
| Description | A flaw was found in unzip. The vulnerability occurs due to improper handling of Unicode strings, which can lead to a null pointer dereference. This flaw allows an attacker to input a specially crafted zip file, leading to a crash or code execution. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| unzip (PTS) | bullseye | 6.0-26+deb11u1 | vulnerable |
| bullseye (security) | 6.0-26+deb11u2 | vulnerable |
| bookworm | 6.0-28 | vulnerable |
| bookworm (security) | 6.0-28+deb12u1 | vulnerable |
| trixie | 6.0-29 | vulnerable |
| trixie (security) | 6.0-29+deb13u1 | vulnerable |
| forky | 6.0-30 | vulnerable |
| sid | 6.0-31 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| unzip | source | (unstable) | (unfixed) | unimportant | | |
Notes
https://bugzilla.redhat.com/show_bug.cgi?id=2044583
https://bugs.launchpad.net/ubuntu/+source/unzip/+bug/1957077
Crash in CLI tool, no security impact