Moderate
CVE-2019-0211
CVE ID
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Moderate
(1 user assessed)Moderate
(1 user assessed)Unknown
Unknown
Unknown
MITRE ATT&CK
Collection
Command and Control
Credential Access
Defense Evasion
Discovery
Execution
Exfiltration
Impact
Initial Access
Lateral Movement
Persistence
Privilege Escalation
Topic Tags
Description
In Apache HTTP Server 2.4 releases 2.4.17 to 2.4.38, with MPM event, worker or prefork, code executing in less-privileged child processes or threads (including scripts executed by an in-process scripting interpreter) could execute arbitrary code with the privileges of the parent process (usually root) by manipulating the scoreboard. Non-Unix systems are not affected.
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Ratings
-
Attacker ValueMedium
-
ExploitabilityMedium
Technical Analysis
A vulnerability in Apache server versions 2.4.17–2.4.38 caused by an out-of-bounds array access can lead to an arbitrary function call. An attacker can trigger this to execute code in the context of the parent Apache process which often runs as root. In order for the exploit to trigger however, the Apache process must gracefully restart. This can be done on demand using apache2ctl graceful
, but is also done automatically once at day by the logrotate
utility (according to the original disclosure).
This exploit is a Local Privilege Escalation (LPE) vulnerability, so an attacker would already need to have some control on the system. This likely could be achieved through some kind of application vulnerability depending on what the Apache server is running.
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General Information
Vendors
- apache,
- canonical,
- debian,
- fedoraproject,
- opensuse
Products
- debian linux 9.0,
- fedora 29,
- fedora 30,
- http server,
- leap 15.0,
- leap 42.3,
- ubuntu linux 14.04,
- ubuntu linux 16.04,
- ubuntu linux 18.04,
- ubuntu linux 18.10
Exploited in the Wild
- Government or Industry Alert (https://www.cisa.gov/known-exploited-vulnerabilities-catalog)
- Other: Ransomware Report 2023 (https://cybersecurityworks.com/howdymanage/uploads/file/Ransomware%20Report%202023_compressed.pdf)
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Advisory
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Additional Info
Technical Analysis
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CVE ID
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