SB2014030314 - Input validation error in augeas (Alpine package)

Description

This security bulletin contains information about 1 vulnerability.

1) Input validation error (CVE-ID: CVE-2012-0787)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to insufficient validation of user-supplied input. The clone_file function in transfer.c in Augeas before 1.0.0, when copy_if_rename_fails is set and EXDEV or EBUSY is returned by the rename function, allows local users to overwrite arbitrary files and obtain sensitive information via a bind mount on the (1) .augsave or (2) destination file when using the backup save option, or (3) .augnew file when using the newfile save option.

Remediation

Install update from vendor's website.

References

• https://git.alpinelinux.org/aports/commit/?id=925aedc7db715e20edabddbb624db5477441d4cf
• https://git.alpinelinux.org/aports/commit/?id=934da98b301e08141380811b39affba078ff7118