CVE-2021-29488
Published: 7 May 2021
SABnzbd is an open source binary newsreader. A vulnerability was discovered in SABnzbd that could trick the `filesystem.renamer()` function into writing downloaded files outside the configured Download Folder via malicious PAR2 files. A patch was released as part of SABnzbd 3.2.1RC1. As a workaround, limit downloads to NZBs without PAR2 files, deny write permissions to the SABnzbd process outside areas it must access to perform its job, or update to a fixed version.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
sabnzbdplus Launchpad, Ubuntu, Debian |
bionic |
Needed
|
| focal |
Needed
|
|
| groovy |
Ignored
(end of life)
|
|
| hirsute |
Ignored
(end of life)
|
|
| impish |
Ignored
(end of life)
|
|
| jammy |
Needed
|
|
| kinetic |
Ignored
(end of life, was needed)
|
|
| lunar |
Not vulnerable
(3.6.1+dfsg-1)
|
|
| mantic |
Not vulnerable
(3.6.1+dfsg-1)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(3.2.1)
|
|
| xenial |
Needs triage
|
|
|
Patches: upstream: https://github.com/sabnzbd/sabnzbd/commit/3766ba54026eaa520dbee5b57a2f33d4954fb98b |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.3 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | Low |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |