Nokogiri: Denial of Service — GLSA 202408-13

A vulnerability has been discovered in Nokogiri, which can lead to a denial of service.

Affected packages

Package	dev-ruby/nokogiri on all architectures
Affected versions	< 1.13.10
Unaffected versions	>= 1.13.10

Background

Nokogiri is an HTML, XML, SAX, and Reader parser.

Description

A denial of service vulnerability has been discovered in Nokogiri. Please review the CVE identifier referenced below for details.

Impact

Nokogiri fails to check the return value from `xmlTextReaderExpand` in the method `Nokogiri::XML::Reader#attribute_hash`. This can lead to a null pointer exception when invalid markup is being parsed. For applications using `XML::Reader` to parse untrusted inputs, this may potentially be a vector for a denial of service attack.

Workaround

Users may be able to search their code for calls to either `XML::Reader#attributes` or `XML::Reader#attribute_hash` to determine if they are affected.

Resolution

All Nokogiri users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=dev-ruby/nokogiri-1.13.10"

References

CVE-2022-23476

Release date
August 07, 2024

Latest revision
August 07, 2024: 1

Severity
normal

Exploitable
local

Bugzilla entries

884863