RCE in Apache Spamassassin
CVE-2020-1946
In Apache SpamAssassin before 3.4.5, malicious rule configuration (.cf) files can be configured to run system commands without any output or errors. With this, exploits can be injected in a number of scenarios. In addition to upgrading to SA version 3.4.5, users should only use update channels or 3rd party .cf files from trusted places.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.061 (93.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 93.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.061 · newest: 0.061 · change: 0.000
Affected products
- Apache Spamassassin
- Apache Software Foundation Spamassassin — versions Apache SpamAssassin
- Debian Linux — versions 9.0, 10.0
- Fedoraproject Fedora — versions 32, 33, 34
Weakness classification (CWE)
References
- s.apache.org/3r1wh (Mailing List, Vendor Advisory)
- www.debian.org/security/2021/dsa-4879 (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.debian.org/debian-lts-announce/2021/04/msg00000.html (mailing-list, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- security.gentoo.org/glsa/202105-26 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-1946?
- CVE-2020-1946 is a critical-severity vulnerability in Apache Spamassassin, classified under OS Command Injection. CVSS score: 9.8/10. Published 2021-03-25.
- How severe is CVE-2020-1946?
- Critical severity. CVSS v3 base score is 9.8 out of 10.