CVE-2019-12420 Denial of service in Apache SpamAssassin
Attackers can craft messages to exhaust resources in Apache SpamAssassin, causing denial of service; administrators should upgrade immediately.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-12420?
CVE-2019-12420 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 12 Dec 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In Apache SpamAssassin before 3.4.3, a message can be crafted in a way to use excessive resources. Upgrading to SA 3.4.3 as soon as possible is the recommended fix but details will not be shared publicly.
Weakness: CWE-400
Which versions are affected by CVE-2019-12420?
It affects 2 products.
Linux distribution packages (6)
spamassassin Red Hat:enterprise_linux:7::client | All versions | 0:3.4.0-6.el7 |
spamassassin-debuginfo Red Hat:enterprise_linux:7::client | All versions | 0:3.4.0-6.el7 |
spamassassin Red Hat:enterprise_linux:7::server | All versions | 0:3.4.0-6.el7 |
spamassassin-debuginfo Red Hat:enterprise_linux:7::server | All versions | 0:3.4.0-6.el7 |
spamassassin Red Hat:enterprise_linux:7::workstation | All versions | 0:3.4.0-6.el7 |
spamassassin-debuginfo Red Hat:enterprise_linux:7::workstation | All versions | 0:3.4.0-6.el7 |
Products include Apache Spamassassin, Debian Debian Linux.
How do I fix CVE-2019-12420?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2019-12420 being exploited?
There is no known exploitation of CVE-2019-12420 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
- CVE-2020-1946 Apache SpamAssassin has an OS Command Injection vulnerability
- CVE-2018-11780 Code injection in Apache SpamAssassin
- CVE-2020-1930 Command injection in Apache SpamAssassin
- CVE-2020-1931 Command injection in Apache SpamAssassin
- CVE-2018-11781 Apache SpamAssassin 3.4.2 fixes a local user code injection in the meta rule syntax.
Sources
Also known as ALPINE-CVE-2019-12420, DEBIAN-CVE-2019-12420, GHSA-q6ww-c56f-5fhw, RHSA-2020:3973, UBUNTU-CVE-2019-12420.