Apache SpamAssassin up to 3.4.2 Rule Configuration System Command os command injection

Summaryinfo

A vulnerability classified as critical has been found in Apache SpamAssassin up to 3.4.2. Impacted is an unknown function of the component Rule Configuration Handler. The manipulation as part of System Command leads to os command injection. This vulnerability is documented as CVE-2020-1930. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apache SpamAssassin up to 3.4.2 (Anti-Spam Software). It has been rated as critical. This issue affects some unknown processing of the component Rule Configuration Handler. The manipulation as part of a System Command leads to a os command injection vulnerability. Using CWE to declare the problem leads to CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was released 01/30/2020 (Website). The advisory is shared at lists.apache.org. The identification of this vulnerability is CVE-2020-1930 since 12/02/2019. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1202 for this issue.

Upgrading to version 3.4.3 eliminates this vulnerability.

Entry connected to this vulnerability is available at VDB-149562. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Anti-Spam Software

Vendor

• Apache

Name

• SpamAssassin

Version

• 3.4.0
• 3.4.1
• 3.4.2

License

• open-source

Website

• Vendor: https://www.apache.org/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion