CVE-2017-9050 — Out-of-bounds read in nokogiri — CVE Details

HIGH

Out-of-bounds read in nokogiri

Published December 13, 2017Updated November 8, 2023Source: osv

Summary

libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictAddString function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. This vulnerability exists because of an incomplete fix for CVE-2016-1839. GitHub is notifying on nokogiri as uses libxml2.

Advisory Timeline

First published December 13, 2017 (3225 days ago).
Last revised November 8, 2023 — 2155 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Bundler

Update nokogiri to 1.8.1 or later

gem install nokogiri -v 1.8.1

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: rubygems (1).

Package	Ecosystem	Affected	Fixed In
nokogiri	rubygems	1.0.0, 1.0.1, 1.0.2, 1.0.3 (+96 more)	1.8.1

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CWE-125
Out-of-bounds ReadMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 7.5 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Frequently Asked Questions

What is CVE-2017-9050?: Out-of-bounds read in nokogiri This vulnerability has been assigned a severity rating of HIGH (CVSS score: 7.5/10).
How do I check if my project is affected by CVE-2017-9050?: CVE-2017-9050 affects nokogiri. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2017-9050 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

7.5

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-8c56-cpmw-89x7

Related CVEs

CVE-2018-14404
HIGH
Nokogiri NULL Pointer Dereference
CVE-2012-6685
HIGH
Nokogiri is vulnerable to XML External Entity (XXE) attack
CVE-2020-7595
HIGH
libxml as used in Nokogiri has an infinite loop in a certain end-of-file situation
CVE-2015-8806
HIGH
Denial of service or RCE from libxml2 and libxslt
CVE-2013-6460
MEDIUM
Nokogiri vulnerable to DoS while parsing XML documents
CVE-2017-18258
MEDIUM
Uncontrolled resource consumption in nokogiri
CVE-2026-57236
LOW
Nokogiri: Possible Use-After-Free when `Nokogiri::XML::Document#encoding=` raises an exception
CVE-2026-57434
LOW
Nokogiri: Null Pointer Dereference calling methods on uninitialized wrapper classes

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