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Security Advisories: GSA_kwCzR0hTQS1xYzlwLW1qeG0tajJ3as4AASwT
Asciidoctor Infinite Loop vulnerability
Asciidoctor in versions < 1.5.8 allows remote attackers to cause a denial of service (infinite loop). The loop was caused by the fact that Parser.next_block was not exhausting all the lines in the reader as the while loop expected it would. This was happening because the regular expression that detects any list was not agreeing with the regular expression that detects a specific list type. So the line kept getting pushed back onto the reader, hence causing the loop.
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1xYzlwLW1qeG0tajJ3as4AASwT
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 2 years ago
Updated: over 1 year ago
CVSS Score: 7.5
CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Identifiers: GHSA-qc9p-mjxm-j2wj, CVE-2018-18385
References:
- https://nvd.nist.gov/vuln/detail/CVE-2018-18385
- https://github.com/asciidoctor/asciidoctor/issues/2888
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/asciidoctor/CVE-2018-18385.yml
- https://github.com/advisories/GHSA-qc9p-mjxm-j2wj
Blast Radius: 28.6
Affected Packages
rubygems:asciidoctor
Dependent packages: 146Dependent repositories: 6,586
Downloads: 40,876,196 total
Affected Version Ranges: < 1.5.8
Fixed in: 1.5.8
All affected versions: 0.0.1, 0.0.2, 0.0.3, 0.0.4, 0.0.5, 0.0.6, 0.0.7, 0.0.9, 0.1.0, 0.1.1, 0.1.2, 0.1.3, 0.1.4, 1.5.0, 1.5.1, 1.5.2, 1.5.3, 1.5.4, 1.5.5, 1.5.6, 1.5.7
All unaffected versions: 1.5.8, 2.0.0, 2.0.1, 2.0.2, 2.0.3, 2.0.4, 2.0.5, 2.0.6, 2.0.7, 2.0.8, 2.0.9, 2.0.10, 2.0.11, 2.0.12, 2.0.13, 2.0.14, 2.0.15, 2.0.16, 2.0.17, 2.0.18, 2.0.19, 2.0.20, 2.0.21, 2.0.22, 2.0.23