Описание
Security update for libu2f-host
This update for libu2f-host and pam_u2f to version 1.0.8 fixes the following issues:
Security issues fixed for libu2f-host:
- CVE-2019-9578: Fixed a memory leak due to a wrong parse of init's response (bsc#1128140).
- CVE-2018-20340: Fixed an unchecked buffer, which could allow a buffer overflow with a custom made malicious USB device (bsc#1124781).
Security issues fixed for pam_u2f:
- CVE-2019-12209: Fixed an issue where symlinks in the user's directory were followed (bsc#1135729).
- CVE-2019-12210: Fixed file descriptor leaks (bsc#1135727).
Список пакетов
SUSE Linux Enterprise Desktop 12 SP4
SUSE Linux Enterprise Server 12 SP4
SUSE Linux Enterprise Server for SAP Applications 12 SP4
Ссылки
- Link for SUSE-SU-2019:1749-1
- E-Mail link for SUSE-SU-2019:1749-1
- SUSE Security Ratings
- SUSE Bug 1124781
- SUSE Bug 1128140
- SUSE Bug 1135727
- SUSE Bug 1135729
- SUSE CVE CVE-2018-20340 page
- SUSE CVE CVE-2019-12209 page
- SUSE CVE CVE-2019-12210 page
- SUSE CVE CVE-2019-9578 page
Описание
Yubico libu2f-host 1.1.6 contains unchecked buffers in devs.c, which could enable a malicious token to exploit a buffer overflow. An attacker could use this to attempt to execute malicious code using a crafted USB device masquerading as a security token on a computer where the affected library is currently in use. It is not possible to perform this attack with a genuine YubiKey.
Затронутые продукты
Ссылки
- CVE-2018-20340
- SUSE Bug 1124781
Описание
Yubico pam-u2f 1.0.7 attempts parsing of the configured authfile (default $HOME/.config/Yubico/u2f_keys) as root (unless openasuser was enabled), and does not properly verify that the path lacks symlinks pointing to other files on the system owned by root. If the debug option is enabled in the PAM configuration, part of the file contents of a symlink target will be logged, possibly revealing sensitive information.
Затронутые продукты
Ссылки
- CVE-2019-12209
- SUSE Bug 1087061
- SUSE Bug 1135727
- SUSE Bug 1135729
Описание
In Yubico pam-u2f 1.0.7, when configured with debug and a custom debug log file is set using debug_file, that file descriptor is not closed when a new process is spawned. This leads to the file descriptor being inherited into the child process; the child process can then read from and write to it. This can leak sensitive information and also, if written to, be used to fill the disk or plant misinformation.
Затронутые продукты
Ссылки
- CVE-2019-12210
- SUSE Bug 1087061
- SUSE Bug 1135727
- SUSE Bug 1135729
Описание
In devs.c in Yubico libu2f-host before 1.1.8, the response to init is misparsed, leaking uninitialized stack memory back to the device.
Затронутые продукты
Ссылки
- CVE-2019-9578
- SUSE Bug 1128140