Arch Linux Security Advisory ASA-202107-36 ========================================== Severity: Medium Date : 2021-07-20 CVE-ID : CVE-2021-22918 Package : libuv Type : information disclosure Remote : Yes Link : https://security.archlinux.org/AVG-2131 Summary ======= The package libuv before version 1.41.1-1 is vulnerable to information disclosure. Resolution ========== Upgrade to 1.41.1-1. # pacman -Syu "libuv>=1.41.1-1" The problem has been fixed upstream in version 1.41.1. Workaround ========== None. Description =========== libuv before version 1.14.1, as bundled by Node.js before versions 16.4.1, 14.17.2 and 12.22.2, is vulnerable to an out-of-bounds read in the libuv's uv__idna_toascii() function which is used to convert strings to ASCII. This is called by Node's dns module's lookup() function and can lead to information disclosures or crashes. Impact ====== Attempting to look up a crafted domain name could disclose sensitive information or crash an application using libuv. References ========== https://github.com/libuv/libuv/issues/3147 https://hackerone.com/reports/1209681 https://github.com/libuv/libuv/commit/86dbeb4bd665749d6234ae90d30923e210de21... https://nodejs.org/en/blog/vulnerability/july-2021-security-releases/#libuv-... https://github.com/nodejs/node/commit/d33aead28bcec32a2a450f884907a6d9716318... https://github.com/nodejs/node/commit/a7496aba0a95b6425e9651c297697b5dd67ac3... https://github.com/nodejs/node/commit/623fd1fcb557985bf452984856c1d0ce4fc096... https://security.archlinux.org/CVE-2021-22918