RCE in Apache Spamassassin
CVE-2020-1930
A command execution issue was found in Apache SpamAssassin prior to 3.4.3. Carefully crafted nefarious rule configuration (.cf) files can be configured to run system commands similar to CVE-2018-11805. With this bug unpatched, exploits can be injected in a number of scenarios including the same privileges as spamd is run which may be elevated 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. If you cannot upgrade, do not use 3rd party rulesets, do not use sa-compile and do not run spamd as an account with elevated privileges.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.071 (93.8th 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 (mailing-list, x_refsource_MLIST)
- 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-2020-1930?
- CVE-2020-1930 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-2020-1930?
- High severity. CVSS v3 base score is 8.1 out of 10.