Bug#1118479: openvpn-auth-radius: fails to authenticate response packets

[Martin Rampersad <martin.rampersad@emkal.ca>]

Package: openvpn-auth-radius
Version: 2.1-9
Severity: important
X-Debbugs-Cc: martin.rampersad@emkal.ca

Dear Maintainer,

I recently upgraded one of my boxes to Debian 13 Trixie.

With the same configs, I was unable to authenticate against an unchanged RADIUS
server.

I downloaded the source, removed the 0007 BLASTRadius mitigation patch, and
rebuilt. This allowed me to successfuly connect to OpenVPN again.

I reapplied the patch and debugged the issue. I submitted a fix and it has been
accepted into unstable (2.1-10) with many thanks to sthibault.

I believe this bug renders the package completely unusable in stable. There is
a function which authenticates received packets which never succeeds because
the secret key is copied from a temporary string c_str and has garbage in it by
the time it is used to perform the necessary hashes.

Is there a way to get this patch in stable?

Thank you,

Martin Rampersad


-- System Information:
Debian Release: 13.1
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.12.48+deb13-amd64 (SMP w/32 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_CA.UTF-8, LC_CTYPE=en_CA.UTF-8 (charmap=UTF-8), LANGUAGE=en_CA:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages openvpn-auth-radius depends on:
ii  libc6        2.41-12
ii  libgcc-s1    14.2.0-19
ii  libgcrypt20  1.11.0-7
ii  libstdc++6   14.2.0-19
ii  openvpn      2.6.14-1

openvpn-auth-radius recommends no packages.

openvpn-auth-radius suggests no packages.