CVE-2022-28366
Certain Neko-related HTML parsers allow a denial of service via crafted Processing Instruction (PI) input that causes excessive heap memory consumption.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.13%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Certain Neko-related HTML parsers allow a denial of service via crafted Processing Instruction (PI) input that causes excessive heap memory consumption. In particular, this issue exists in HtmlUnit-Neko through 2.26, and is fixed in 2.27. This issue also exists in CyberNeko HTML through 1.9.22 (also affecting OWASP AntiSamy before 1.6.6), but 1.9.22 is the last version of CyberNeko HTML. NOTE: this may be related to CVE-2022-24839.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.13% probability · 81th percentile
- CISA KEV
- Not listed
- Affected
- cyberneko html project/cyberneko html · htmlunit/htmlunit · antisamy project/antisamy
- Source
- cve@mitre.org
References
- https://github.com/nahsra/antisamy/releases/tag/v1.6.6Release Notes, Third Party Advisory
- https://search.maven.org/artifact/net.sourceforge.htmlunit/neko-htmlunitRelease Notes, Third Party Advisory
- https://sourceforge.net/projects/htmlunit/files/htmlunit/2.27/Release Notes, Third Party Advisory
- https://github.com/nahsra/antisamy/releases/tag/v1.6.6Release Notes, Third Party Advisory
- https://search.maven.org/artifact/net.sourceforge.htmlunit/neko-htmlunitRelease Notes, Third Party Advisory
- https://sourceforge.net/projects/htmlunit/files/htmlunit/2.27/Release Notes, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.