Debian 11: libfcgi Critical Integer Overflow Buffer Overflow DLA-4329-1

An issue has been found in libfcgi, a FastCGI bridge from CGI. The issue
is related to an integer overflow (and resultant heap-based buffer
overflow) via crafted nameLen or valueLen values in data to the IPC
socket.


For Debian 11 bullseye, this problem has been fixed in version
2.4.2-2+deb11u1.

We recommend that you upgrade your libfcgi packages.

For the detailed security status of libfcgi please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/libfcgi

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS