- What: A security update addresses an authentication bypass vulnerability in inetutils' telnetd implementation on Debian systems.
- Impact: An attacker could potentially bypass authentication due to improper sanitization of the CREDENTIALS_DIRECTORY environment variable.
[SECURITY] [DSA 6144-1] inetutils security update To : debian-security-announce@lists.debian.org Subject : [SECURITY] [DSA 6144-1] inetutils security update From : Salvatore Bonaccorso < carnil@debian.org > Date : Thu, 19 Feb 2026 20:41:17 +0000 Message-id : < [🔎] E1vtApp-00Dikn-2M@seger.debian.org > Reply-to : debian-security-announce-request@lists.debian.org -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - ------------------------------------------------------------------------- Debian Security Advisory DSA-6144-1 security@debian.org https://www.debian.org/security/ Salvatore Bonaccorso February 19, 2026 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : inetutils CVE ID : not yet available Ron Ben Yizhak discovered that the inetutils implementation of telnetd didn't sanitise the CREDENTIALS_DIRECTORY environment variable before passing it to the login binary. This could be exploited to bypass authentication and login as root. For the stable distribution (trixie), this problem has been fixed in version 2:2.6-3+deb13u2. We recommend that you upgrade your inetutils packages. For the detailed security status of inetutils please refer to its security tracker page at: https://security-tracker.debian.org/tracker/inetutils Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@lists.debian.org -----BEGIN PGP SIGNATURE----- iQKTBAEBCgB9FiEERkRAmAjBceBVMd3uBUy48xNDz0QFAmmXdTNfFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldDQ2 NDQ0MDk4MDhDMTcxRTA1NTMxRERFRTA1NENCOEYzMTM0M0NGNDQACgkQBUy48xND z0QRKQ/+K63a70DREAiZYGWbxQ2isYHdARYE6UYvqu2oU1klKk5FGEYh9T1yHlD1 5+RUhZf9xGwRqm7Zj1Ok8y5vAm/rvTnHf5jK1f+eBpV7cI/t7aD8cBpjL3HVr3Lg ve+0AWjKnew3mWsenfVqCD1jOP0emk99YRsJitdnyNQimG1GBXlAJXxLyfE/p5o8 AfpYr34q0XcGCRW2JfKjUxqHiUlk0XnQbX5NnGo4ptU8R3itJLTy4E7pO7ivzlXm bOGRX7HYZ7b0R+BBiS9STXtOma5gnfICZ7rV17XwuNn4Qq6dcB7uQaBOIc8HzZL2 b4nfIwQB/WVI76tWwwOrBsAkKwFbGLLL+rOTp9SL8KJZNGmK0nR8NmHemOQHzgYm SzaqrwATxiBuXIbifL7crMf6rJtwSmKMPgM4UhIHFlBPKKN6++RFnzE3Ys1Wx7HH WXilxZHENnXLYKPK74H4SKT2Oiqi8wsgH+nnVBXG5G4EcXGe46om6la9dKcu8Rr0 wKKeQKOr4lsfdiAWlSq+I6aJAJWatEXIYJ0y+zOAkmt1Ytaj+ii6ltLvuHWCc42V 1yH2rnGps7GHEQRsy8YcxIg/mUhT4M6OKrzVbb2VelRu8+6MFAz/GBl80Dwcrjau stIqNt7r7vwk1wHGPr+6IZWvdSWQbuo23O0Pd0OHU/yi6gBXQOQ= =wPpk -----END PGP SIGNATURE----- Reply to: debian-security-announce@lists.debian.org Salvatore Bonaccorso (on-list) Salvatore Bonaccorso (off-list) Prev by Date: [SECURITY] [DSA 6143-1] libvpx security update Next by Date: [SECURITY] [DSA 6145-1] nova security update Previous by thread: [SECURITY] [DSA 6143-1] libvpx security update Next by thread: [SECURITY] [DSA 6145-1] nova security update Index(es): Date Thread