CVE-2019-5477

EPSS 5.9%CWE-78

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 5.9%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

16 Aug 2019Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

Affected products

n/a · Nokogiri (ruby gem)

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References

https://github.com/sparklemotion/nokogiri/issues/1915 https://github.com/tenderlove/rexical/blob/master/CHANGELOG.rdoc https://hackerone.com/reports/650835 https://lists.debian.org/debian-lts-announce/2019/09/msg00027.html https://lists.debian.org/debian-lts-announce/2022/10/msg00018.html https://lists.debian.org/debian-lts-announce/2022/10/msg00019.html https://security.gentoo.org/glsa/202006-05 https://usn.ubuntu.com/4175-1/