SB2019050658 - Code Injection in ruby (Alpine package)
Published: May 6, 2019
Security Bulletin ID
SB2019050658
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Code Injection (CVE-ID: CVE-2019-8324)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation when processing multiple line entries within gems in ensure_loadable_spec(). A remote attacker can send a specially crafted gem, inject malicious code into stub line of gemspec and execute it code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=26cc34eb049b628c4c35af1f61ebd8437596d8ca
- https://git.alpinelinux.org/aports/commit/?id=bdcdc921e8387c8a9592aa14cf1d23f133503163
- https://git.alpinelinux.org/aports/commit/?id=58244868e7a471ddf96e8d0ece88c240e34bff1c
- https://git.alpinelinux.org/aports/commit/?id=ac00a3ec880f7f8f92ff425d4e08f233bd5654c9