CVE-2021-4249

low-risk
Published 2022-12-18

A vulnerability was found in xml-conduit. It has been classified as problematic. Affected is an unknown function of the file xml-conduit/src/Text/XML/Stream/Parse.hs of the component DOCTYPE Entity Expansion Handler. The manipulation leads to infinite loop. It is possible to launch the attack remotely. Upgrading to version 1.9.1.0 is able to address this issue. The name of the patch is 4be1021791dcdee8b164d239433a2043dc0939ea. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-216204.

Do I need to act?

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0.72% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.3/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Xml-Conduit

Affected Vendors

Haskell

References (8)

Patch https://github.com/snoyberg/xml/commit/4be1021791dcdee8b164d239433a2043dc0939ea
Patch https://github.com/snoyberg/xml/pull/161
Release Notes https://hackage.haskell.org/package/xml-conduit-1.9.1.0
Third Party Advisory https://vuldb.com/?id.216204
Patch https://github.com/snoyberg/xml/commit/4be1021791dcdee8b164d239433a2043dc0939ea
Patch https://github.com/snoyberg/xml/pull/161
Release Notes https://hackage.haskell.org/package/xml-conduit-1.9.1.0
Third Party Advisory https://vuldb.com/?id.216204
25
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 2/34 · Minimal
Exposure 5/34 · Minimal