CVE-2021-22918

Name	CVE-2021-22918
Description	Node.js before 16.4.1, 14.17.2, 12.22.2 is vulnerable to an out-of-bounds read when uv__idna_toascii() is used to convert strings to ASCII. The pointer p is read and increased without checking whether it is beyond pe, with the latter holding a pointer to the end of the buffer. This can lead to information disclosures or crashes. This function can be triggered via uv_getaddrinfo().
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DSA-4936-1
Debian Bugs	990561

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libuv1 (PTS)	buster	1.24.1-1+deb10u1	fixed
	buster (security)	1.24.1-1+deb10u2	fixed
	bullseye	1.40.0-2	fixed
	bullseye (security)	1.40.0-2+deb11u1	fixed
	bookworm	1.44.2-1	fixed
	bookworm (security)	1.44.2-1+deb12u1	fixed
	trixie	1.48.0-1	fixed
	sid	1.48.0-1.1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Origin	Debian Bugs
libuv1	source	stretch	(not affected)
libuv1	source	buster	1.24.1-1+deb10u1	DSA-4936-1
libuv1	source	(unstable)	1.40.0-2		990561

Notes

[stretch] - libuv1 <not-affected> (Vulnerable code added later)
https://nodejs.org/en/blog/vulnerability/july-2021-security-releases/
https://github.com/nodejs/node/commit/d33aead28bcec32a2a450f884907a6d971631829