CVE-2021-34337 Mailman Core vulnerable to timing attacks
An attacker can use timing attacks to discover the REST API password, enabling unauthorized API access if the service is exposed beyond localhost.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-34337?
CVE-2021-34337 is a medium-severity vulnerability in n/a, published on 15 Apr 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An issue was discovered in Mailman Core before 3.3.5. An attacker with access to the REST API could use timing attacks to determine the value of the configured REST API password and then make arbitrary REST API calls. The REST API is bound to localhost by default, limiting the ability for attackers to exploit this, but can optionally be made to listen on other interfaces.
Weakness: CWE-208
Which versions are affected by CVE-2021-34337?
3 open source packages ship an affected version, including mailman. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mailman PyPI | All versions | 3.3.5 |
mailman PyPI | All versions | 3.3.5 |
mailman PyPI | All versions | 3.3.5 |
Linux distribution packages (2)
mailman3 openSUSE:Tumbleweed | All versions | 3.3.5-2.1 |
python3-mailman openSUSE:Tumbleweed | All versions | 3.3.5-1.1 |
Products include Gnu Mailman.
How do I fix CVE-2021-34337?
Upgrade mailman to 3.3.5 or later.
Is CVE-2021-34337 being exploited?
There is no known exploitation of CVE-2021-34337 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2021-34337, GHSA-2jg5-xgvv-4wq7, OESA-2022-2005, PYSEC-2023-22, UBUNTU-CVE-2021-34337, openSUSE-SU-2024:11644-1 and 1 more.