Command Injection in ruby-nokogiri (Alpine package)
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2019-5477 |
| CWE-ID | CWE-77 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
ruby-nokogiri (Alpine package) Operating systems & Components / Operating system package or component |
| Vendor | Alpine Linux Development Team |
Security Bulletin
This security bulletin contains one high risk vulnerability.
1) Command Injection
EUVDB-ID: #VU32012
Risk: High
CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-5477
CWE-ID:
CWE-77 - Command injection
Exploit availability: No
DescriptionThe vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
A command injection vulnerability in Nokogiri v1.10.3 and earlier allows commands to be executed in a subprocess via Ruby's `Kernel.open` method. Processes are vulnerable only if the undocumented method `Nokogiri::CSS::Tokenizer#load_file` is being called with unsafe user input as the filename. This vulnerability appears in code generated by the Rexical gem versions v1.0.6 and earlier. Rexical is used by Nokogiri to generate lexical scanner code for parsing CSS queries. The underlying vulnerability was addressed in Rexical v1.0.7 and Nokogiri upgraded to this version of Rexical in Nokogiri v1.10.4.
MitigationInstall update from vendor's website.
Vulnerable software versionsruby-nokogiri (Alpine package): 1.10.3-r0
External linkshttp://git.alpinelinux.org/aports/commit/?id=b127c6f6cf45e6a2a08272a7fe34daadfdb6684a
http://git.alpinelinux.org/aports/commit/?id=53e015e6726f37a7111be656b8fbf4baed50ccf4
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
