CVE-2020-1946: Apache SpamAssassin has an OS Command Injection vulnerability
First published: Thu Mar 25 2021(Updated: )
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.
Credit: security@apache.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/spamassassin | 3.4.2-1+deb10u3 3.4.6-1 4.0.0-6 4.0.0-7 | |
| debian/spamassassin | <=3.4.2-1<=3.4.2-1+deb10u2 | 4.0.0~0.0svn1879217-1 3.4.5~pre1-1 3.4.2-1+deb10u3 |
| Apache SpamAssassin | <3.4.5 | |
| Debian | =9.0 | |
| Debian | =10.0 | |
| Fedora | =32 | |
| Fedora | =33 | |
| Fedora | =34 |
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Reference Links
- https://www.openwall.com/lists/oss-security/2021/03/24/3
- https://bz.apache.org/SpamAssassin/show_bug.cgi?id=7793
- https://svn.apache.org/viewvc/spamassassin/branches/3.4/lib/Mail/SpamAssassin/Conf/Parser.pm?r1=1864416&r2=1876381&pathrev=1876381
- https://security-tracker.debian.org/tracker/CVE-2020-1946
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=985962
- https://lists.debian.org/debian-lts-announce/2021/04/msg00000.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7V2SBVTKVLFFT36ECJQ7TQ7KAQCQZDRZ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JFBFRIG5TX23NF4ND6OAKKY7I6TLRCCP/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NKAXYBKBMQOLIW6UKASJCAZRBOIYS4RL/
- https://s.apache.org/3r1wh
- https://security.gentoo.org/glsa/202105-26
- https://www.debian.org/security/2021/dsa-4879
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7V2SBVTKVLFFT36ECJQ7TQ7KAQCQZDRZ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JFBFRIG5TX23NF4ND6OAKKY7I6TLRCCP/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NKAXYBKBMQOLIW6UKASJCAZRBOIYS4RL/
Frequently Asked Questions
What is the severity of CVE-2020-1946?
The severity of CVE-2020-1946 is considered high due to the potential for system command execution without visible output.
How do I fix CVE-2020-1946?
To fix CVE-2020-1946, upgrade Apache SpamAssassin to version 3.4.5 or later.
Which versions of Apache SpamAssassin are affected by CVE-2020-1946?
CVE-2020-1946 affects Apache SpamAssassin versions prior to 3.4.5.
What vulnerabilities does CVE-2020-1946 introduce?
CVE-2020-1946 introduces the risk of exploits through malicious rule configuration files that can execute system commands.
Are there any specific distributions impacted by CVE-2020-1946?
Yes, Debian and Fedora distributions are affected by CVE-2020-1946 if they use vulnerable versions of Apache SpamAssassin.
- collector/security-tracker-debian
- collector/debian-bugs
- alias/CVE-2020-1946
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/weakness
- agent/title
- agent/references
- agent/severity
- agent/last-modified-date
- agent/author
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- agent/event
- agent/first-publish-date
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- package-manager/debian
- vendor/apache
- canonical/apache spamassassin
- vendor/debian
- canonical/debian
- version/debian/9.0
- version/debian/10.0
- vendor/fedoraproject
- canonical/fedora
- version/fedora/32
- version/fedora/33
- version/fedora/34