CVE-2019-1000021 slixmpp Incorrect Access Control
An incorrect access control in slixmpp allows contacts to view private data if the user publishes to a PEP node without explicit privacy configuration.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-1000021?
CVE-2019-1000021 is a high-severity missing authorization vulnerability in n/a, published on 4 Feb 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
slixmpp version before commit 7cd73b594e8122dddf847953fcfc85ab4d316416 contains an incorrect Access Control vulnerability in XEP-0223 plugin (Persistent Storage of Private Data via PubSub) options profile, used for the configuration of default access model that can result in all of the contacts of the victim can see private data having been published to a PEP node. This attack appears to be exploitable if the user of this library publishes any private data on PEP, the node isn't configured to be private. This vulnerability appears to have been fixed in commit 7cd73b594e8122dddf847953fcfc85ab4d316416 which is included in slixmpp 1.4.2.
Which versions are affected by CVE-2019-1000021?
3 open source packages ship an affected version, including slixmpp. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
slixmpp PyPI | All versions | 1.4.2 |
slixmpp PyPI | All versions | 1.4.2 |
slixmpp PyPI | All versions | 1.4.2 |
Linux distribution packages (1)
python-slixmpp SUSE:Package Hub 15 | All versions | 1.3.0-bp150.3.3.1 |
Products include Slixmpp Project Slixmpp.
How do I fix CVE-2019-1000021?
Upgrade slixmpp to 1.4.2 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2019-1000021 being exploited?
There is no known exploitation of CVE-2019-1000021 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2019-1000021, GHSA-4g62-mfwx-4q48, PYSEC-2019-121, UBUNTU-CVE-2019-1000021, openSUSE-SU-2019:0163-1, openSUSE-SU-2019:0169-1.