CVE catalog

CVE-2018-18385

asciidoctor: CVE-2018-18385

Severity: Medium
Published: Oct 16, 2018, 4:50:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 2.25% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	asciidoctor	sid	`2.0.26-2`	fixed
Debian	asciidoctor	forky	`2.0.26-2`	fixed
Debian	asciidoctor	trixie	`2.0.23-1`	fixed
Debian	asciidoctor	bookworm	`2.0.18-2`	fixed
Ubuntu	asciidoctor	16.04	`1.5.2-2`	vulnerable
Ubuntu	asciidoctor	16.04	`1.5.3-1`	vulnerable
Ubuntu	asciidoctor	16.04	`1.5.4-1`	vulnerable
Ubuntu	asciidoctor	18.04	`1.5.5-1`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	asciidoctor	source	sid	`1.5.8-1`	low	Not reported	[913892]
Debian	asciidoctor	source	forky	`1.5.8-1`	low	Not reported	[913892]
Debian	asciidoctor	source	trixie	`1.5.8-1`	low	Not reported	[913892]
Debian	asciidoctor	source	bookworm	`1.5.8-1`	low	Not reported	[913892]

[Debian bug #913892]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[asciidoctor]Fixed
Details (2)
- 2.0.18-2 · all · bookworm
  Fixed · Fixed: 1.5.8-1
  dsa · asciidoctor · debian · bookworm; dsa · asciidoctor · debian · 12
- 2.0.18-2 · all · bookworm
  Fixed · Fixed: 1.5.8-1
  dsa · asciidoctor · debian · bookworm; dsa · asciidoctor · debian · 12
[asciidoctor-doc]Fixed
Source package: [asciidoctor]
Details (2)
- 2.0.18-2 · all · bookworm
  Fixed · Fixed: 1.5.8-1
  dsa · asciidoctor · debian · bookworm; dsa · asciidoctor · debian · 12
- 2.0.18-2 · all · bookworm
  Fixed · Fixed: 1.5.8-1
  dsa · asciidoctor · debian · bookworm; dsa · asciidoctor · debian · 12
[ruby-asciidoctor]Fixed
Source package: [asciidoctor]
Details (2)
- 2.0.18-2 · all · bookworm
  Fixed · Fixed: 1.5.8-1
  dsa · asciidoctor · debian · bookworm; dsa · asciidoctor · debian · 12
- 2.0.18-2 · all · bookworm
  Fixed · Fixed: 1.5.8-1
  dsa · asciidoctor · debian · bookworm; dsa · asciidoctor · debian · 12

[Debian 13 (Trixie)]

[asciidoctor]Fixed
Details (2)
- 2.0.23-1 · all · trixie
  Fixed · Fixed: 1.5.8-1
  dsa · asciidoctor · debian · 13
- 2.0.23-1 · all · trixie
  Fixed · Fixed: 1.5.8-1
  dsa · asciidoctor · debian · 13
[asciidoctor-doc]Fixed
Source package: [asciidoctor]
Details (2)
- 2.0.23-1 · all · trixie
  Fixed · Fixed: 1.5.8-1
  dsa · asciidoctor · debian · 13
- 2.0.23-1 · all · trixie
  Fixed · Fixed: 1.5.8-1
  dsa · asciidoctor · debian · 13
[ruby-asciidoctor]Fixed
Source package: [asciidoctor]
Details (2)
- 2.0.23-1 · all · trixie
  Fixed · Fixed: 1.5.8-1
  dsa · asciidoctor · debian · 13
- 2.0.23-1 · all · trixie
  Fixed · Fixed: 1.5.8-1
  dsa · asciidoctor · debian · 13

Observed: Oct 23, 2026, 5:35:30 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]