ArchLinux: 202012-10: libproxy: denial of service
Summary
url::recvline in url.cpp in libproxy 0.4.x through 0.4.15 allows a remote HTTP PAC server to trigger uncontrolled recursion via a response composed of an infinite stream that lacks a newline character. This leads to stack exhaustion.
Resolution
Upgrade to 0.4.16-1.
# pacman -Syu "libproxy>=0.4.16-1"
The problem has been fixed upstream in version 0.4.16.
References
https://github.com/libproxy/libproxy/issues/134 https://github.com/libproxy/libproxy/pull/136 https://github.com/libproxy/libproxy/commit/a83dae404feac517695c23ff43ce1e116e2bfbe0 https://security.archlinux.org/CVE-2020-25219
Workaround
None.