#ubuntu

Ubuntu Security Notice 6108-1 - It was discovered that Jhead did not properly handle certain crafted images while rotating them. An attacker could possibly use this issue to crash Jhead, resulting in a denial of service. Kyle Brown discovered that Jhead did not properly handle certain crafted images while regenerating the Exif thumbnail. An attacker could possibly use this issue to execute arbitrary commands.

Ubuntu Security Notice 6106-1 - It was discovered that calamares-settings-ubuntu allowed creating the first user with a blank password, contrary to expectations.

Ubuntu Security Notice 6105-1 - The ca-certificates package contained outdated CA certificates. This update refreshes the included certificates to those contained in the 2.60 version of the Mozilla certificate authority bundle.

Ubuntu Security Notice 6105-2 - USN-6105-1 updated ca-certificates. This provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. The ca-certificates package contained outdated CA certificates. This update refreshes the included certificates to those contained in the 2.60 version of the Mozilla certificate authority bundle.

Ubuntu Security Notice 6100-1 - It was discovered that HTML::StripScripts does not properly parse HTML content with certain style attributes. A remote attacker could use this issue to cause a regular expression denial of service.

Ubuntu Security Notice 6104-1 - Alexander Lakhin discovered that PostgreSQL incorrectly handled certain CREATE privileges. An authenticated user could possibly use this issue to execute arbitrary code as the bootstrap supervisor. Wolfgang Walther discovered that PostgreSQL incorrectly handled certain row security policies. An authenticated user could possibly use this issue to complete otherwise forbidden reads and modifications.

### Summary When building packages directly from source control, file permissions on the checked-in files are not maintained. ### Details When building packages directly from source control, file permissions on the checked-in files are not maintained. When nfpm packaged the files (without extra config for enforcing its own permissions) files could go out with bad permissions (chmod 666 or 777). ### PoC Create a default nfpm structure. Within the test folder, create 3 files named `chmod-XXX.sh`. Each script has file permissions set corresponding with their file names (`chmod-777.sh` = `chmod 777`). Below each file and permissions can be seen. ```console $ ls -lart test total 24 -rwxrwxrwx 1 user group 11 May 19 13:15 chmod-777.sh -rw-rw-rw- 1 user group 11 May 19 13:16 chmod-666.sh drwxr-xr-x 5 user group 160 May 19 13:19 . -rw-rw-r-- 1 user group 11 May 19 13:19 chmod-664.sh drwxr-xr-x 10 user group 320 May 19 13:29 .. ``` Below is the snippet nfpm confi...

Ubuntu Security Notice 6103-1 - It was discovered that JSON Schema incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to exploit JavaScript runtimes and cause a denial of service or execute arbitrary code.

Ubuntu Security Notice 6074-3 - USN-6074-1 fixed vulnerabilities and USN-6074-2 fixed minor regressions in Firefox. The update introduced several minor regressions. This update fixes the problem. Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information across domains, or execute arbitrary code. Irvan Kurniawan discovered that Firefox did not properly manage memory when using RLBox Expat driver. An attacker could potentially exploits this issue to cause a denial of service. Anne van Kesteren discovered that Firefox did not properly validate the import call in service workers. An attacker could potentially exploits this to obtain sensitive information. Sam Ezeh discovered that Firefox did not properly handle certain favicon image files. If a user were tricked into opening a malicious favicon file, an attacker could cause a den...

Ubuntu Security Notice 6101-1 - It was discovered that GNU binutils incorrectly handled certain DWARF files. An attacker could possibly use this issue to cause a crash or execute arbitrary code. This issue only affected Ubuntu 22.10. It was discovered that GNU binutils did not properly verify the version definitions in zer0-lengthverdef table. An attacker could possibly use this issue to cause a crash or execute arbitrary code. This issue only affected Ubuntu 22.04 LTS, Ubuntu 22.10 and Ubuntu 23.04.