RCE in Apache Spamassassin
CVE-2020-1931
A command execution issue was found in Apache SpamAssassin prior to 3.4.3. Carefully crafted nefarious Configuration (.cf) files can be configured to run system commands similar to CVE-2018-11805. This issue is less stealthy and attempts to exploit the issue will throw warnings. Thanks to Damian Lukowski at credativ for reporting the issue ethically. With this bug unpatched, exploits can be injected in a number of scenarios though doing so remotely is difficult. In addition to upgrading to SA 3.4.4, we again recommend that users should only use update channels or 3rd party .cf files from trusted places.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.065 (93.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Apache Spamassassin
- Apache Software Foundation Spamassassin — versions prior to 3.4.3
Weakness classification (CWE)
References
- security@apache.org (Permissions Required, x_refsource_CONFIRM)
- security@apache.org (vendor-advisory, x_refsource_DEBIAN)
- security@apache.org (mailing-list, x_refsource_BUGTRAQ)
- security@apache.org (x_refsource_UBUNTU, vendor-advisory)
- security@apache.org (x_refsource_UBUNTU, vendor-advisory)
- security@apache.org (x_refsource_FEDORA, vendor-advisory)
- security@apache.org (x_refsource_FEDORA, vendor-advisory)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (vendor-advisory, x_refsource_SUSE)
Frequently asked questions
- What is CVE-2020-1931?
- CVE-2020-1931 is a high-severity vulnerability in Apache Spamassassin, classified under OS Command Injection. CVSS score: 8.1/10. Published 2020-01-30.
- How severe is CVE-2020-1931?
- High severity. CVSS v3 base score is 8.1 out of 10.