SB2024080148 - Ubuntu update for snapd
Published: August 1, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Security features bypass (CVE-ID: CVE-2024-1724)
CWE-ID: CWE-254 - Security Features
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists die to snapd failes to restrict writes to the $HOME/bin path when using AppArmor for enforcement of sandbox permissions. A remote attacker can trick the victim to install a malicious snap and install arbitrary scripts into the users PATH which.
2) Input validation error (CVE-ID: CVE-2024-29068)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of file types when extracting a snap. A remote attacker can trick the victim into installing a malicious snap and perform a denial of service (DoS) attack.
3) UNIX symbolic link following (CVE-ID: CVE-2024-29069)
CWE-ID: CWE-61 - UNIX Symbolic Link (Symlink) Following
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to a symlink following issue when extracting a snap. An attacker who could convince a user to install a malicious snap can force the application to write data into a world-readable directory and gain access to sensitive information.
Remediation
Install update from vendor's website.