Loop with Unreachable Exit Condition ('Infinite Loop') Affecting rubygem-asciidoctor package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL7-RUBYGEMASCIIDOCTOR-4458074
- published26 Mar 2023
- disclosed26 Sept 2018
Introduced: 26 Sep 2018
CVE-2018-18385 (opens in a new tab)How to fix?
There is no fixed version for RHEL:7 rubygem-asciidoctor.
NVD Description
Note: Versions mentioned in the description apply only to the upstream rubygem-asciidoctor package and not the rubygem-asciidoctor package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
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.