Red Hat Security Advisory: sudo security update
An update for sudo is now available for Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
beschreibt (1)
Zugehörige CVEs.
| ID | Schweregrad | ausnutzbar | ||
|---|---|---|---|---|
| CVE-2019-18634US | high7.8 | Exploit | ||
In Sudo before 1.8.26, if pwfeedback is enabled in /etc/sudoers, users can trigger a stack-based buffer overflow in the privileged sudo process. (pwfeedback is a default setting in… | ||||
Referenzen
Externe Belege — Patches, Meldungen, Analysen.
Behebungen (14)
- Behobensudo-0:1.8.25p1-4.el8_0.3.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.0)
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2020:0509 - Behobensudo-0:1.8.25p1-4.el8_0.3.src as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.0)
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2020:0509 - Behobensudo-0:1.8.25p1-4.el8_0.3.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.0)
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2020:0509 - Behobensudo-debuginfo-0:1.8.25p1-4.el8_0.3.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.0)
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2020:0509 - Behobensudo-debuginfo-0:1.8.25p1-4.el8_0.3.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.0)
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2020:0509 - Behobensudo-debugsource-0:1.8.25p1-4.el8_0.3.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.0)
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2020:0509 - Behobensudo-debugsource-0:1.8.25p1-4.el8_0.3.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.0)
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2020:0509 - Workaroundsudo-0:1.8.25p1-4.el8_0.3.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.0)
Please follow the steps bellow as mitigation: 1. Check the default properties set for sudo by running: ~~~ $ sudo -l [sudo] password for user: Matching Defaults entries for users on localhost: !visiblepw, pwfeedback, always_set_home, match_group_by_gid, always_query_group_plugin, env_reset, env_keep="COLORS DISPLAY HOSTNAME HISTSIZE KDEDIR LS_COLORS", env_keep+="MAIL PS1 PS2 QTDIR USERNAME LANG LC_ADDRESS LC_CTYPE", env_keep+="LC_COLLATE LC_IDENTIFICATION LC_MEASUREMENT LC_MESSAGES", env_keep+="LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER LC_TELEPHONE", env_keep+="LC_TIME LC_ALL LANGUAGE LINGUAS _XKB_CHARSET XAUTHORITY", secure_path=/sbin\:/bin\:/usr/sbin\:/usr/bin ~~~ 2. If `pwfeedback` is enabled as shown above, edit your `/etc/sudoers` file, changing the line: ~~~ Defaults pwfeedback ~~~ To: ~~~ Defaults !pwfeedback ~~~ This will disable visual feedback on password typing, making sure the attack is not possible anymore.
- Workaroundsudo-0:1.8.25p1-4.el8_0.3.src as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.0)
Please follow the steps bellow as mitigation: 1. Check the default properties set for sudo by running: ~~~ $ sudo -l [sudo] password for user: Matching Defaults entries for users on localhost: !visiblepw, pwfeedback, always_set_home, match_group_by_gid, always_query_group_plugin, env_reset, env_keep="COLORS DISPLAY HOSTNAME HISTSIZE KDEDIR LS_COLORS", env_keep+="MAIL PS1 PS2 QTDIR USERNAME LANG LC_ADDRESS LC_CTYPE", env_keep+="LC_COLLATE LC_IDENTIFICATION LC_MEASUREMENT LC_MESSAGES", env_keep+="LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER LC_TELEPHONE", env_keep+="LC_TIME LC_ALL LANGUAGE LINGUAS _XKB_CHARSET XAUTHORITY", secure_path=/sbin\:/bin\:/usr/sbin\:/usr/bin ~~~ 2. If `pwfeedback` is enabled as shown above, edit your `/etc/sudoers` file, changing the line: ~~~ Defaults pwfeedback ~~~ To: ~~~ Defaults !pwfeedback ~~~ This will disable visual feedback on password typing, making sure the attack is not possible anymore.
- Workaroundsudo-0:1.8.25p1-4.el8_0.3.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.0)
Please follow the steps bellow as mitigation: 1. Check the default properties set for sudo by running: ~~~ $ sudo -l [sudo] password for user: Matching Defaults entries for users on localhost: !visiblepw, pwfeedback, always_set_home, match_group_by_gid, always_query_group_plugin, env_reset, env_keep="COLORS DISPLAY HOSTNAME HISTSIZE KDEDIR LS_COLORS", env_keep+="MAIL PS1 PS2 QTDIR USERNAME LANG LC_ADDRESS LC_CTYPE", env_keep+="LC_COLLATE LC_IDENTIFICATION LC_MEASUREMENT LC_MESSAGES", env_keep+="LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER LC_TELEPHONE", env_keep+="LC_TIME LC_ALL LANGUAGE LINGUAS _XKB_CHARSET XAUTHORITY", secure_path=/sbin\:/bin\:/usr/sbin\:/usr/bin ~~~ 2. If `pwfeedback` is enabled as shown above, edit your `/etc/sudoers` file, changing the line: ~~~ Defaults pwfeedback ~~~ To: ~~~ Defaults !pwfeedback ~~~ This will disable visual feedback on password typing, making sure the attack is not possible anymore.
- Workaroundsudo-debuginfo-0:1.8.25p1-4.el8_0.3.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.0)
Please follow the steps bellow as mitigation: 1. Check the default properties set for sudo by running: ~~~ $ sudo -l [sudo] password for user: Matching Defaults entries for users on localhost: !visiblepw, pwfeedback, always_set_home, match_group_by_gid, always_query_group_plugin, env_reset, env_keep="COLORS DISPLAY HOSTNAME HISTSIZE KDEDIR LS_COLORS", env_keep+="MAIL PS1 PS2 QTDIR USERNAME LANG LC_ADDRESS LC_CTYPE", env_keep+="LC_COLLATE LC_IDENTIFICATION LC_MEASUREMENT LC_MESSAGES", env_keep+="LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER LC_TELEPHONE", env_keep+="LC_TIME LC_ALL LANGUAGE LINGUAS _XKB_CHARSET XAUTHORITY", secure_path=/sbin\:/bin\:/usr/sbin\:/usr/bin ~~~ 2. If `pwfeedback` is enabled as shown above, edit your `/etc/sudoers` file, changing the line: ~~~ Defaults pwfeedback ~~~ To: ~~~ Defaults !pwfeedback ~~~ This will disable visual feedback on password typing, making sure the attack is not possible anymore.
- Workaroundsudo-debuginfo-0:1.8.25p1-4.el8_0.3.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.0)
Please follow the steps bellow as mitigation: 1. Check the default properties set for sudo by running: ~~~ $ sudo -l [sudo] password for user: Matching Defaults entries for users on localhost: !visiblepw, pwfeedback, always_set_home, match_group_by_gid, always_query_group_plugin, env_reset, env_keep="COLORS DISPLAY HOSTNAME HISTSIZE KDEDIR LS_COLORS", env_keep+="MAIL PS1 PS2 QTDIR USERNAME LANG LC_ADDRESS LC_CTYPE", env_keep+="LC_COLLATE LC_IDENTIFICATION LC_MEASUREMENT LC_MESSAGES", env_keep+="LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER LC_TELEPHONE", env_keep+="LC_TIME LC_ALL LANGUAGE LINGUAS _XKB_CHARSET XAUTHORITY", secure_path=/sbin\:/bin\:/usr/sbin\:/usr/bin ~~~ 2. If `pwfeedback` is enabled as shown above, edit your `/etc/sudoers` file, changing the line: ~~~ Defaults pwfeedback ~~~ To: ~~~ Defaults !pwfeedback ~~~ This will disable visual feedback on password typing, making sure the attack is not possible anymore.
- Workaroundsudo-debugsource-0:1.8.25p1-4.el8_0.3.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.0)
Please follow the steps bellow as mitigation: 1. Check the default properties set for sudo by running: ~~~ $ sudo -l [sudo] password for user: Matching Defaults entries for users on localhost: !visiblepw, pwfeedback, always_set_home, match_group_by_gid, always_query_group_plugin, env_reset, env_keep="COLORS DISPLAY HOSTNAME HISTSIZE KDEDIR LS_COLORS", env_keep+="MAIL PS1 PS2 QTDIR USERNAME LANG LC_ADDRESS LC_CTYPE", env_keep+="LC_COLLATE LC_IDENTIFICATION LC_MEASUREMENT LC_MESSAGES", env_keep+="LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER LC_TELEPHONE", env_keep+="LC_TIME LC_ALL LANGUAGE LINGUAS _XKB_CHARSET XAUTHORITY", secure_path=/sbin\:/bin\:/usr/sbin\:/usr/bin ~~~ 2. If `pwfeedback` is enabled as shown above, edit your `/etc/sudoers` file, changing the line: ~~~ Defaults pwfeedback ~~~ To: ~~~ Defaults !pwfeedback ~~~ This will disable visual feedback on password typing, making sure the attack is not possible anymore.
- Workaroundsudo-debugsource-0:1.8.25p1-4.el8_0.3.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v. 8.0)
Please follow the steps bellow as mitigation: 1. Check the default properties set for sudo by running: ~~~ $ sudo -l [sudo] password for user: Matching Defaults entries for users on localhost: !visiblepw, pwfeedback, always_set_home, match_group_by_gid, always_query_group_plugin, env_reset, env_keep="COLORS DISPLAY HOSTNAME HISTSIZE KDEDIR LS_COLORS", env_keep+="MAIL PS1 PS2 QTDIR USERNAME LANG LC_ADDRESS LC_CTYPE", env_keep+="LC_COLLATE LC_IDENTIFICATION LC_MEASUREMENT LC_MESSAGES", env_keep+="LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER LC_TELEPHONE", env_keep+="LC_TIME LC_ALL LANGUAGE LINGUAS _XKB_CHARSET XAUTHORITY", secure_path=/sbin\:/bin\:/usr/sbin\:/usr/bin ~~~ 2. If `pwfeedback` is enabled as shown above, edit your `/etc/sudoers` file, changing the line: ~~~ Defaults pwfeedback ~~~ To: ~~~ Defaults !pwfeedback ~~~ This will disable visual feedback on password typing, making sure the attack is not possible anymore.
Advisories wie diese benennen die exponierten Produkte, die Angreifer auf Ihrer Angriffsfläche ins Visier nehmen. Sehen Sie mit einem kostenlosen Passiv-Scan, was exponiert ist.
Kostenloser Scan