Package: ca-certificates Version: 20210119 Severity: normal X-Debbugs-Cc: s.egb...@sbcglobal.net
Dear Maintainer, A group of auditors were reviewing the CA inclusion process and have examined the `update-ca-certificates` and its code. This issue is not about the PKI nor its certificate handling. One auditor noticed that the ordering of looking for OpenSSL executable file (`openssl`) seems ... counterintuitive? I would imagine that the correct ordering for searching this `openssl` executable file be something like: 1. /usr/local/sbin/openssl 2. /usr/local/bin/openssl 3. /usr/sbin/openssl 4. /usr/bin/openssl The actually and current order by the latest `update-ca-certificates` in looking for this `openssl` exectuable is currently: 1. $CWD/openssl 2. /usr/local/bin/openssl 3. /usr/local/sbin/openssl 4. /usr/bin/openssl 5. /usr/sbin/openssl Please note the inversal of `sbin` and `bin`. (The ordering of `/usr`/`/usr/local` complies with FSSTD v2.3). ANALYSIS If a single-user binary (such as `openssl`) is the official and resides within the `sbin` as a single-user file, why is `update-ca-certificates` looking to circumvent this official binary with something outside of `sbin`? Please note that I did not say 'system binary' here that is often mistaken for `sbin`. In these transitory age (of Fedora squeezing `/sbin` into `/usr/bin`) why would an auditor want to use the `bin` firstly before the `sbin` for finding the 'official' executable? What gain of system integrity can be had by evoking the non-single-user `bin`-variant before the single-user `sbin`-variant? AUDITOR ALERT: As an unrelated note but for auditors especially in area of CA certificates, auditors should be forewarned that the current (`$CWD`) directory should be empty before conducting their examination effort using `openssl` executable by others (most notably and currently the `update-ca-certificates`). Of course, I am not the UNIX expert here but merely a multi-decade user of UNIX. This bug report is merely to point out if this inversal of `sbin`/`bin` executable lookup is the standard expected way of doing searches for a specific executable file. -- System Information: Debian Release: 11.3 APT prefers stable APT policy: (990, 'stable'), (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable-debug'), (500, 'proposed-updates-debug'), (500, 'unstable'), (500, 'testing') Architecture: amd64 (x86_64) Kernel: Linux 5.16.0-5-amd64 (SMP w/4 CPU threads; PREEMPT) Kernel taint flags: TAINT_WARN Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages ca-certificates depends on: ii debconf [debconf-2.0] 1.5.77 ii openssl 1.1.1n-0+deb11u1 ca-certificates recommends no packages. ca-certificates suggests no packages. -- debconf information: ca-certificates/trust_new_crts: yes ca-certificates/title: ca-certificates/new_crts: ca-certificates/enable_crts: mozilla/ACCVRAIZ1.crt, mozilla/AC_RAIZ_FNMT-RCM.crt, mozilla/Actalis_Authentication_Root_CA.crt, mozilla/AffirmTrust_Commercial.crt, mozilla/AffirmTrust_Networking.crt, mozilla/AffirmTrust_Premium.crt, mozilla/AffirmTrust_Premium_ECC.crt, mozilla/Amazon_Root_CA_1.crt, mozilla/Amazon_Root_CA_2.crt, mozilla/Amazon_Root_CA_3.crt, mozilla/Amazon_Root_CA_4.crt, mozilla/Atos_TrustedRoot_2011.crt, mozilla/Autoridad_de_Certificacion_Firmaprofesional_CIF_A62634068.crt, mozilla/Baltimore_CyberTrust_Root.crt, mozilla/Buypass_Class_2_Root_CA.crt, mozilla/Buypass_Class_3_Root_CA.crt, mozilla/CA_Disig_Root_R2.crt, mozilla/Certigna.crt, mozilla/Certigna_Root_CA.crt, mozilla/certSIGN_ROOT_CA.crt, mozilla/certSIGN_Root_CA_G2.crt, mozilla/Certum_Trusted_Network_CA_2.crt, mozilla/Certum_Trusted_Network_CA.crt, mozilla/CFCA_EV_ROOT.crt, mozilla/Chambers_of_Commerce_Root_-_2008.crt, mozilla/Comodo_AAA_Services_root.crt, mozilla/COMODO_Certification_Authority.crt, mozilla/COMODO_ECC_Certification_Authority.crt, mozilla/COMODO_RSA_Certification_Authority.crt, mozilla/Cybertrust_Global_Root.crt, mozilla/DigiCert_Assured_ID_Root_CA.crt, mozilla/DigiCert_Assured_ID_Root_G2.crt, mozilla/DigiCert_Assured_ID_Root_G3.crt, mozilla/DigiCert_Global_Root_CA.crt, mozilla/DigiCert_Global_Root_G2.crt, mozilla/DigiCert_Global_Root_G3.crt, mozilla/DigiCert_High_Assurance_EV_Root_CA.crt, mozilla/DigiCert_Trusted_Root_G4.crt, mozilla/DST_Root_CA_X3.crt, mozilla/D-TRUST_Root_Class_3_CA_2_2009.crt, mozilla/D-TRUST_Root_Class_3_CA_2_EV_2009.crt, mozilla/EC-ACC.crt, mozilla/emSign_ECC_Root_CA_-_C3.crt, mozilla/emSign_ECC_Root_CA_-_G3.crt, mozilla/emSign_Root_CA_-_C1.crt, mozilla/emSign_Root_CA_-_G1.crt, mozilla/Entrust.net_Premium_2048_Secure_Server_CA.crt, mozilla/Entrust_Root_Certification_Authority.crt, mozilla/Entrust_Root_Certification_Authority_-_EC1.crt, mozilla/Entrust_Root_Certification_Authority_-_G2.crt, mozilla/Entrust_Root_Certification_Authority_-_G4.crt, mozilla/ePKI_Root_Certification_Authority.crt, mozilla/e-Szigno_Root_CA_2017.crt, mozilla/E-Tugra_Certification_Authority.crt, mozilla/GDCA_TrustAUTH_R5_ROOT.crt, mozilla/GeoTrust_Primary_Certification_Authority_-_G2.crt, mozilla/Global_Chambersign_Root_-_2008.crt, mozilla/GlobalSign_ECC_Root_CA_-_R4.crt, mozilla/GlobalSign_ECC_Root_CA_-_R5.crt, mozilla/GlobalSign_Root_CA.crt, mozilla/GlobalSign_Root_CA_-_R2.crt, mozilla/GlobalSign_Root_CA_-_R3.crt, mozilla/GlobalSign_Root_CA_-_R6.crt, mozilla/Go_Daddy_Class_2_CA.crt, mozilla/Go_Daddy_Root_Certificate_Authority_-_G2.crt, mozilla/GTS_Root_R1.crt, mozilla/GTS_Root_R2.crt, mozilla/GTS_Root_R3.crt, mozilla/GTS_Root_R4.crt, mozilla/Hellenic_Academic_and_Research_Institutions_ECC_RootCA_2015.crt, mozilla/Hellenic_Academic_and_Research_Institutions_RootCA_2011.crt, mozilla/Hellenic_Academic_and_Research_Institutions_RootCA_2015.crt, mozilla/Hongkong_Post_Root_CA_1.crt, mozilla/Hongkong_Post_Root_CA_3.crt, mozilla/IdenTrust_Commercial_Root_CA_1.crt, mozilla/IdenTrust_Public_Sector_Root_CA_1.crt, mozilla/ISRG_Root_X1.crt, mozilla/Izenpe.com.crt, mozilla/Microsec_e-Szigno_Root_CA_2009.crt, mozilla/Microsoft_ECC_Root_Certificate_Authority_2017.crt, mozilla/Microsoft_RSA_Root_Certificate_Authority_2017.crt, mozilla/NAVER_Global_Root_Certification_Authority.crt, mozilla/NetLock_Arany_=Class_Gold=_Főtanúsítvány.crt, mozilla/Network_Solutions_Certificate_Authority.crt, mozilla/OISTE_WISeKey_Global_Root_GB_CA.crt, mozilla/OISTE_WISeKey_Global_Root_GC_CA.crt, mozilla/QuoVadis_Root_CA_1_G3.crt, mozilla/QuoVadis_Root_CA_2.crt, mozilla/QuoVadis_Root_CA_2_G3.crt, mozilla/QuoVadis_Root_CA_3.crt, mozilla/QuoVadis_Root_CA_3_G3.crt, mozilla/QuoVadis_Root_CA.crt, mozilla/Secure_Global_CA.crt, mozilla/SecureSign_RootCA11.crt, mozilla/SecureTrust_CA.crt, mozilla/Security_Communication_RootCA2.crt, mozilla/Security_Communication_Root_CA.crt, mozilla/Sonera_Class_2_Root_CA.crt, mozilla/SSL.com_EV_Root_Certification_Authority_ECC.crt, mozilla/SSL.com_EV_Root_Certification_Authority_RSA_R2.crt, mozilla/SSL.com_Root_Certification_Authority_ECC.crt, mozilla/SSL.com_Root_Certification_Authority_RSA.crt, mozilla/Staat_der_Nederlanden_EV_Root_CA.crt, mozilla/Staat_der_Nederlanden_Root_CA_-_G3.crt, mozilla/Starfield_Class_2_CA.crt, mozilla/Starfield_Root_Certificate_Authority_-_G2.crt, mozilla/Starfield_Services_Root_Certificate_Authority_-_G2.crt, mozilla/SwissSign_Gold_CA_-_G2.crt, mozilla/SwissSign_Silver_CA_-_G2.crt, mozilla/SZAFIR_ROOT_CA2.crt, mozilla/TeliaSonera_Root_CA_v1.crt, mozilla/TrustCor_ECA-1.crt, mozilla/TrustCor_RootCert_CA-1.crt, mozilla/TrustCor_RootCert_CA-2.crt, mozilla/Trustis_FPS_Root_CA.crt, mozilla/Trustwave_Global_Certification_Authority.crt, mozilla/Trustwave_Global_ECC_P256_Certification_Authority.crt, mozilla/Trustwave_Global_ECC_P384_Certification_Authority.crt, mozilla/T-TeleSec_GlobalRoot_Class_2.crt, mozilla/T-TeleSec_GlobalRoot_Class_3.crt, mozilla/TUBITAK_Kamu_SM_SSL_Kok_Sertifikasi_-_Surum_1.crt, mozilla/TWCA_Global_Root_CA.crt, mozilla/TWCA_Root_Certification_Authority.crt, mozilla/UCA_Extended_Validation_Root.crt, mozilla/UCA_Global_G2_Root.crt, mozilla/USERTrust_ECC_Certification_Authority.crt, mozilla/USERTrust_RSA_Certification_Authority.crt, mozilla/VeriSign_Universal_Root_Certification_Authority.crt, mozilla/XRamp_Global_CA_Root.crt
